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时间:  2007-8-18 09:40

作者: liuguo_hello     标题: [原创]

<p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt 10.5pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-para-margin-left: 1.0gd;"><strong><span lang="EN-US"><font face="Times New Roman">VPN</font></span></strong><strong><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">配置简单说明书</span></strong><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">一、</span><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="Times New Roman">&nbsp;IKE</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">协商的阶段简单描述：</span><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="Times New Roman">
                                <p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">IKE</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">协商可以和<span lang="EN-US">TCP</span>的三次握手来类比，只不过<span lang="EN-US">IKE</span>协商要比<span lang="EN-US">TCP</span>的三次握手要复杂一些，<span lang="EN-US">IKE</span>协商采用的<span lang="EN-US">UDP</span>报文格式，默认端口是<span lang="EN-US">500</span>，在主模式下，一个正常的<span lang="EN-US">IKE</span>协商过程需要经过<span lang="EN-US">9</span>个报文的来回，才最终建立起通信双方所需要的<span lang="EN-US">IPSec&nbsp;SA</span>，然后双方利用该<span lang="EN-US">SA</span>就可以对数据流进行加密和解密。下面结合简单描述一下协商的过程。</font><span lang="EN-US"><br/></span><font face="宋体">假设<span lang="EN-US">A</span>和<span lang="EN-US">B</span>进行通信，<span lang="EN-US">A</span>作为发起方，<span lang="EN-US">A</span>发送的第一个报文内容是本地所支持的<span lang="EN-US">IKE</span>的策略（即下面所提到的<span lang="EN-US">olicy</span>），该<span lang="EN-US">policy</span>的内容有加密算法、<span lang="EN-US">hash</span>算法、<span lang="EN-US">D-H</span>组、认证方式、<span lang="EN-US">SA</span>的生存时间等<span lang="EN-US">5</span>个元素。这<span lang="EN-US">5</span>个元素里面值得注意的是认证方式，目前采用的主要认证方式有预共享和数字证书。在简单的<span lang="EN-US">VPN</span>应用中，一般采用预共享方式来认证身份。在本文的配置中也是以预共享为例来说明的。可以配置多个策略，对端只要有一个与其相同，对端就可以采用该<span lang="EN-US">policy</span>，并在第二个报文中将该<span lang="EN-US">policy</span>发送回来，表明采用该<span lang="EN-US">policy</span>为后续的通信进行保护。第三和第四个报文是进行<span lang="EN-US">D-H</span>交换的<span lang="EN-US">D-H</span>公开值，这与具体的配置影响不大。在完成上面四个报文交换后，利用<span lang="EN-US">D-H</span>算法，<span lang="EN-US">A</span>和<span lang="EN-US">B</span>就可以协商出一个公共的秘密，后续的密钥都是从该秘密衍生出来的。第五和第六个报文是身份验证过程，前面已经提高后，有两种身份验证方式<span lang="EN-US">——</span>预共享和数字证书，在这里，<span lang="EN-US">A</span>将其身份信息和一些其他信息发送给<span lang="EN-US">B</span>，<span lang="EN-US">B</span>接受到后，对<span lang="EN-US">A</span>的身份进行验证，同时<span lang="EN-US">B</span>将自己的身份信息也发送给<span lang="EN-US">A</span>进行验证。采用预共享验证方式的时候，需要配置预共享密钥，标识身份有两种方式，其一是<span lang="EN-US">IP</span>地址，其二是主机名（<span lang="EN-US">hostname</span>）。在一般的配置中，可以选用<span lang="EN-US">IP</span>地址来标识身份。完成前面六个报文交换的过程，就是完成<span lang="EN-US">IKE</span>第一阶段的协商过程。如果打开调试信息，会看到<span lang="EN-US">IKE&nbsp;SA&nbsp;Establish</span>（<span lang="EN-US">IKE&nbsp;SA</span>已经建立），也称作主模式已经完成。</font><span lang="EN-US"><br/><font face="宋体">IKE</font></span><font face="宋体">的第二阶段是快速模式协商的过程。该模式中的三个报文主要是协商<span lang="EN-US">IPSec&nbsp;SA</span>，利用第一阶段所协商出来的公共的秘密，可以为该三个报文进行加密。在配置中，主要涉及到数据流、变换集合以及对完美前向保护（<span lang="EN-US">FS</span>）的支持。在很多时候，会发现<span lang="EN-US">IKE&nbsp;SA</span>已经建立成功，但是<span lang="EN-US">IPSec&nbsp;SA</span>无法建立起来，这时最有可能的原因是数据流是否匹配（<span lang="EN-US">A</span>所要保护的数据流是否和<span lang="EN-US">B</span>所保护的数据流相对应）、变换集合是否一致以及<span lang="EN-US">pfs</span>配置是否一致。</font><span lang="EN-US"><br/></span><font face="宋体">二、<span lang="EN-US">&nbsp;IKE</span>、<span lang="EN-US">IPSec</span>配置基本步骤</font><span lang="EN-US"><br/><font face="宋体">1</font></span><font face="宋体">．配置<span lang="EN-US">IKE&nbsp;</span>策略（<span lang="EN-US">policy</span>）</font><span lang="EN-US"><br/><font face="宋体">policy</font></span><font face="宋体">就是上图中的<span lang="EN-US">IKE</span>策略。<span lang="EN-US">olicy</span>里面的内容有<span lang="EN-US">hash</span>算法、加密算法、<span lang="EN-US">D-H</span>组、生存时间。可以配置多个<span lang="EN-US">policy</span>，只要对端有一个相同的，双方就可以采用该<span lang="EN-US">policy</span>，不过要主要<span lang="EN-US">policy</span>中的认证方式，因为认证方式的不同会影响后续的配置不同。一般采用预共享（<span lang="EN-US">preshare</span>）。在目前的安全路由器和<span lang="EN-US">VPN3020</span>上的实现上都有默认的配置选项，也就是说如果你新增加一条策略后，即使什么都不配置，退出后，也会有默认值的。</font><span lang="EN-US"><br/><font face="宋体">2</font></span><font face="宋体">．配置预共享密钥（<span lang="EN-US">preshare</span>）</font><span lang="EN-US"><br/></span><font face="宋体">在配置预共享密钥的时候，需要选择是<span lang="EN-US">IP</span>地址还是<span lang="EN-US">Hostname</span>来标识该密钥，如果对端是<span lang="EN-US">IP</span>地址标识身份，就采用<span lang="EN-US">IP</span>地址来标识密钥；如果对端是<span lang="EN-US">Hostname</span>来标识身份，则采用<span lang="EN-US">hostname</span>来标识密钥。</font><span lang="EN-US"><br/><font face="宋体">3</font></span><font face="宋体">．配置本端标识（<span lang="EN-US">localid</span>）</font><span lang="EN-US"><br/></span><font face="宋体">本端标识有<span lang="EN-US">IP</span>地址和<span lang="EN-US">Hostname</span>，在安全路由器上，默认的是用<span lang="EN-US">IP</span>地址来标识。即不配置本端标识，就表示是用<span lang="EN-US">IP</span>地址来标识。</font><span lang="EN-US"><br/></span><font face="宋体">以上三个步骤就完成<span lang="EN-US">IKE</span>的配置，以下是<span lang="EN-US">IPSec</span>的配置：</font><span lang="EN-US"><br/><font face="宋体">4</font></span><font face="宋体">．配置数据流（<span lang="EN-US">access-list</span>）</font><span lang="EN-US"><br/></span><font face="宋体">很容易理解，部署任何<span lang="EN-US">VPN</span>都需要对数据流所限制，不可能对所有的数据流都进行加密（<span lang="EN-US">any&nbsp;to&nbsp;any</span>）。配置好数据流后，在加密映射（<span lang="EN-US">map</span>）中引用该数据流。</font><span lang="EN-US"><br/><font face="宋体">5</font></span><font face="宋体">．配置变换集合（<span lang="EN-US">transform-set</span>）</font><span lang="EN-US"><br/></span><font face="宋体">变换集合是某个对等方能接受的一组<span lang="EN-US">IPSec</span>协议和密码学算法。双方只要一致即可。注意，在<span lang="EN-US">VPN3020</span>和带加密模块的安全路由器上支持国密办的<span lang="EN-US">SSP02</span>算法。</font><span lang="EN-US"><br/><font face="宋体">6</font></span><font face="宋体">．配置加密映射（<span lang="EN-US">map</span>）</font><span lang="EN-US"><br/></span><font face="宋体">为<span lang="EN-US">IPSec</span>创建的加密映射条目使得用于建立<span lang="EN-US">IPSec</span>安全联盟的各个部件协调工作，它包括以下部分：</font><span lang="EN-US"><br/><font face="宋体">l&nbsp;</font></span><font face="宋体">所要保护的数据流（引用步骤<span lang="EN-US">4</span>所配置的数据流）</font><span lang="EN-US"><br/><font face="宋体">l&nbsp;</font></span><font face="宋体">对端的<span lang="EN-US">IP</span>地址（这个是必须的，除非是动态加密映射，见本文后面的章节）</font><span lang="EN-US"><br/><font face="宋体">l&nbsp;</font></span><font face="宋体">对所要保护的数据流采用什么加密算法和采用什么安全协议（引用步骤<span lang="EN-US">5</span>所配置的变换集合）</font><span lang="EN-US"><br/><font face="宋体">l&nbsp;</font></span><font face="宋体">是否需要支持<span lang="EN-US">FS</span>（双方要一致）</font><span lang="EN-US"><br/><font face="宋体">l&nbsp;SA</font></span><font face="宋体">的生存时间（是可选的，不配置的话有默认值）</font><span lang="EN-US"><br/><font face="宋体">7</font></span><font face="宋体">．应用（激活）加密映射</font><span lang="EN-US"><br/></span><font face="宋体">在安全路由器上是将该加密映射应用到接口上去，而在<span lang="EN-US">VPN3020</span>上是激活（<span lang="EN-US">active</span>）该<span lang="EN-US">map</span>。</font><span lang="EN-US"><br/></span><font face="宋体">三、<span lang="EN-US">&nbsp;</span>动态加密映射技术</font><span lang="EN-US"><br/></span><font face="宋体">目前，安全路由器系列和<span lang="EN-US">VPN</span>系列均支持动态加密映射。什么是动态加密映射？动态加密映射所应用的环境是什么呢？我们可以从以下的一个案例中来说明动态加密映射的概念。如下图：<span lang="EN-US"><p></p></span></font></span></p><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">在上图的网络拓扑中，</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">MP803</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">接入</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">Internet</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">的并不是宽带接入（固定</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">IP</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">地址），而是在通过电信</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">ADSL</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">拨号来获取到</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">IP</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">地址，不是固定的</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">IP</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">地址。这时候，对于上端</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">MP2600A</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">来说，就存在问题了，回想一下前面所描述的配置步骤，在步骤六中配置加密映射的时候，需要配置对端的</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">peer&nbsp;IP</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">地址，这时候怎么办呢？或许您想到</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">——</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">那我每次拨号获取到</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">IP</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">地址后，再在两端来配置</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">IPSec——</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">这种解决办法是</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">OK</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">的，只要客户或者您自己容忍每次</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">MP803</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">重新拨号后，您重新去更改配置。显然，这样方法充其量只能用来测试的。</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">动态加密映射就是用来解决这类问题的。顾名思义，动态加密映射，就是说，在配置加密映射的时候，不需要配置对端的</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">peer&nbsp;IP</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">地址。目前，安全路由器和</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">VPN</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">系列都支持动态加密映射，但由于两者实现上的差异，导致他们在配置动态加密映射的时候存在一些不同，在后文的实际配置案例中会讲到。</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><br style="mso-special-character: line-break;"/><br style="mso-special-character: line-break;"/></span>

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时间:  2007-8-18 09:40

作者: liuguo_hello

<p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">四、<span lang="EN-US">&nbsp;NAT</span>穿越略述</font><span lang="EN-US"><br/><font face="宋体">NAT</font></span><font face="宋体">穿越是指在两台<span lang="EN-US">VPN</span>网关之间的还存在<span lang="EN-US">NAT</span>设备，从原理来说，<span lang="EN-US">NAT</span>和<span lang="EN-US">IPSec</span>存在一定的矛盾。主要体现两点：<span lang="EN-US">NAT</span>更改了<span lang="EN-US">IP</span>数据包的<span lang="EN-US">IP</span>源地址或者目的地址，这与<span lang="EN-US">IPSec</span>协议中的<span lang="EN-US">AH</span>认证头协议存在不可调和的矛盾，因此如果<span lang="EN-US">IPSec</span>报文需要穿越<span lang="EN-US">NAT</span>设备的话，在配置变换集合的时候就不能选用<span lang="EN-US">AH</span>协议（目前，由于<span lang="EN-US">ESP</span>协议也提供验证功能，<span lang="EN-US">AH</span>使用很少）；第二点是<span lang="EN-US">NAT</span>设备的端口地址转换是针对<span lang="EN-US">TCP/UDP/ICMP</span>等协议。对于<span lang="EN-US">ESP</span>协议，没有相应的处理机制。具体详细资料请查看<span lang="EN-US">IETF</span>的草案。此外，<span lang="EN-US">NAT</span>穿越目前还没有国际标准，公司在国内率先实现了<span lang="EN-US">NAT</span>穿越功能。目前，公司的安全路由器、<span lang="EN-US">VPN3020</span>等都已经实现了<span lang="EN-US">NAT</span>穿越。</font><span lang="EN-US"><br/><font face="宋体">NAT</font></span><font face="宋体">穿越对于路由器和<span lang="EN-US">VPN3020</span>上的配置没有任何的改变。目前，公司的北京办和总部的互联的两台路由器建立隧道就是穿越了<span lang="EN-US">NAT</span>。</font><span lang="EN-US"><br/></span><font face="宋体">五、<span lang="EN-US">&nbsp;</span>实际配置案例</font><span lang="EN-US"><br/></span><font face="宋体">案例<span lang="EN-US">1</span>：路由器与路由器互通</font><span lang="EN-US"><br/></span><font face="宋体">网络拓扑如图所示：</font><span lang="EN-US"><br/></span><font face="宋体">网络拓扑<span lang="EN-US">1<p></p></span></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">需求：两台<span lang="EN-US">MP2600</span>路由器，都有固定的公网<span lang="EN-US">IP</span>地址，现在需要构建<span lang="EN-US">VPN</span>，保护在两台路由器后面的网络。使<span lang="EN-US">C1</span>能够访问到<span lang="EN-US">C2</span>。</font><span lang="EN-US"><br/></span><font face="宋体">规划：使用<span lang="EN-US">IKE</span>自动协商密钥，<span lang="EN-US">policy</span>的参数设置，加密算法为<span lang="EN-US">des</span>、验证算法为<span lang="EN-US">sha</span>方式为预共享、<span lang="EN-US">D-H</span>组为<span lang="EN-US">group&nbsp;1</span>；身份标识为<span lang="EN-US">IP</span>地址，以<span lang="EN-US">IP</span>地址作来标识预共享密钥；变换集合参数设置，隧道模式为<span lang="EN-US">tunnel</span>、协议<span lang="EN-US">-</span>算法为<span lang="EN-US">esp-des</span>、<span lang="EN-US">esp-md5</span>；不启用<span lang="EN-US">pfs</span>；在配置注意，避免配置所要保护的数据流为<span lang="EN-US">any</span>到<span lang="EN-US">any</span>。首先是在实际使用过程中，不会有这样的需求，其次，这样会让很多本来不需要加密的通信无法通信。<span lang="EN-US"><p></p></span></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">具体配置脚本：</font><span lang="EN-US"><font face="宋体">&nbsp;<br/>=======================================================<br/>MP<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="2600" unitname="a">2600A</chmetcnv><br/>=======================================================<br/>MP<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="2600" unitname="a">2600A</chmetcnv>#sh&nbsp;running-</font><font face="宋体"><place wst="on"><placename wst="on">config</placename>&nbsp;<br/><placetype wst="on">Building</placetype></place>&nbsp;Configuration...done<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">Current&nbsp;configuration...<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">version&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">2.24.8</chsdate><br/>hostname&nbsp;MP<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="2600" unitname="a">2600A</chmetcnv><br/>enable&nbsp;password&nbsp;[WOWWWNXSX&nbsp;encrypt<br/>no&nbsp;service&nbsp;password-encrypt<br/>no&nbsp;service&nbsp;enhanced-secure<br/>ip&nbsp;tcp&nbsp;timestamp<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤<span lang="EN-US">4:</span>配置访问列表<span lang="EN-US">,</span>定义所要保护的数据流。</font><span lang="EN-US"><br/><font face="宋体">ip&nbsp;access-list&nbsp;extended&nbsp;1001<br/>permit&nbsp;ip&nbsp;192.168.1.0&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.255&nbsp;192.168.2.0&nbsp;0.0.0.255&nbsp;<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><font face="宋体"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;">//</span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;">步骤<span lang="EN-US">5:</span>配置变换集合<span lang="EN-US">,</span>定义数据加密所使用的算法和安全协议<span lang="EN-US"><p></p></span></span></font></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">crypto&nbsp;ipsec&nbsp;transform-set&nbsp;tr1&nbsp;esp-des&nbsp;esp-md5-hmac<br/>mode&nbsp;tunnel<br/>exit<p></p></font></span></p>

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时间:  2007-8-18 09:41

作者: liuguo_hello

<p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤六<span lang="EN-US">:</span>配置加密映射<span lang="EN-US">,</span>将各种组件联系在一起</font><span lang="EN-US"><br/><font face="宋体">crypto&nbsp;map&nbsp;map1&nbsp;1&nbsp;ipsec-isakmp<br/>match&nbsp;address&nbsp;1001&nbsp;//</font></span><font face="宋体">引用步骤<span lang="EN-US">4</span>所配置的数据流</font><span lang="EN-US"><br/><font face="宋体">set&nbsp;peer&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">2.2.2</chsdate>.2<br/>set&nbsp;transform-set&nbsp;tr1&nbsp;//</font></span><font face="宋体">引用步骤<span lang="EN-US">5</span>所配置的变化集合</font><span lang="EN-US"><br/><font face="宋体">set&nbsp;security-association&nbsp;lifetime&nbsp;seconds&nbsp;28800<br/>set&nbsp;security-association&nbsp;lifetime&nbsp;kilobytes&nbsp;4608000<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;loopback0<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;fastethernet0<br/>ip&nbsp;address&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3&nbsp;255.255.255.0<br/>//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤七<span lang="EN-US">:</span>将加密映射应用到接口上去</font><span lang="EN-US"><font face="宋体">.<br/>crypto&nbsp;map&nbsp;map1<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;ethernet0<br/>ip&nbsp;address&nbsp;192.168.1.1&nbsp;255.255.255.0<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">ip&nbsp;route&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.0&nbsp;0.0.0.0&nbsp;1.1.1.1<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤<span lang="EN-US">1</span>：配置<span lang="EN-US">IKE</span>的</font><span lang="EN-US"><font face="宋体">policy<br/>crypto&nbsp;isakmp&nbsp;policy&nbsp;1<br/>encryption&nbsp;des<br/>hash&nbsp;sha<br/>authentication&nbsp;pre-share<br/>group&nbsp;1<br/>lifetime&nbsp;86400<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤<span lang="EN-US">2:</span>配置预共享密钥<span lang="EN-US">,</span>此处配置的是对端<span lang="EN-US">VPN</span>网关的<span lang="EN-US">IP</span>地址</font><span lang="EN-US"><font face="宋体">.<br/>crypto&nbsp;isakmp&nbsp;key&nbsp;maipu&nbsp;address&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">2.2.2</chsdate>.2<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><br/><font face="宋体">=======================================================<br/>MP2600B<br/>=======================================================<br/>MP2600B#sh&nbsp;running-</font><font face="宋体"><place wst="on"><placename wst="on">config</placename>&nbsp;<br/><placetype wst="on">Building</placetype></place>&nbsp;Configuration...done<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">Current&nbsp;configuration...<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">version&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">2.24.8</chsdate><br/>hostname&nbsp;MP2600B<br/>user&nbsp;faint&nbsp;password&nbsp;0&nbsp;faint<br/>enable&nbsp;password&nbsp;[WOWWWNXSX&nbsp;encrypt<br/>no&nbsp;service&nbsp;password-encrypt<br/>no&nbsp;service&nbsp;enhanced-secure<br/>ip&nbsp;tcp&nbsp;timestamp<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">该数据流与<span lang="EN-US">MP<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="2600" unitname="a">2600A</chmetcnv></span>的数据流相对应。</font><span lang="EN-US"><br/><font face="宋体">ip&nbsp;access-list&nbsp;extended&nbsp;1001<br/>permit&nbsp;ip&nbsp;192.168.2.0&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.255&nbsp;192.168.1.0&nbsp;0.0.0.255&nbsp;<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">crypto&nbsp;ipsec&nbsp;transform-set&nbsp;tr1&nbsp;esp-des&nbsp;esp-md5-hmac<br/>mode&nbsp;tunnel<br/>exit<p></p></font></span></p><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">crypto&nbsp;map&nbsp;map1&nbsp;1&nbsp;ipsec-isakmp<br/>match&nbsp;address&nbsp;1001<br/>set&nbsp;peer&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3<br/>set&nbsp;transform-set&nbsp;tr1&nbsp;<br/>set&nbsp;security-association&nbsp;lifetime&nbsp;seconds&nbsp;28800<br style="mso-special-character: line-break;"/><br style="mso-special-character: line-break;"/></span>

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时间:  2007-8-18 09:42

作者: liuguo_hello

<p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">set&nbsp;security-association&nbsp;lifetime&nbsp;kilobytes&nbsp;4608000<br/>exit&nbsp;<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;loopback0<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;fastethernet0<br/>ip&nbsp;address&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">2.2.2</chsdate>.2&nbsp;255.255.255.0<br/>crypto&nbsp;map&nbsp;map1<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;ethernet0<br/>ip&nbsp;address&nbsp;192.168.2.1&nbsp;255.255.255.0<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;serial0<br/>physical-layer&nbsp;sync<br/>encapsulation&nbsp;hdlc<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;serial2<br/>physical-layer&nbsp;sync<br/>encapsulation&nbsp;hdlc<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">ip&nbsp;route&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.0&nbsp;0.0.0.0&nbsp;2.2.2.1<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">与<span lang="EN-US">MP<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="2600" unitname="a">2600A</chmetcnv></span>的<span lang="EN-US">policy</span>至少有一个相同</font><span lang="EN-US"><br/><font face="宋体">crypto&nbsp;isakmp&nbsp;policy&nbsp;1<br/>encryption&nbsp;des<br/>hash&nbsp;sha<br/>authentication&nbsp;pre-share<br/>group&nbsp;1<br/>lifetime&nbsp;86400<br/>exit<br/>crypto&nbsp;isakmp&nbsp;key&nbsp;maipu&nbsp;address&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3<br/></font></span><font face="宋体">路由器上的调试命令：</font><span lang="EN-US"><br/></span><font face="宋体">如果是<span lang="EN-US">telnet</span>登录到路由器上，执行<span lang="EN-US">ter&nbsp;monitor</span>命令。然后打开调试开关</font><span lang="EN-US"><br/><font face="宋体">debug&nbsp;crypto&nbsp;isakmp&nbsp;normal</font></span><font face="宋体">就能够看到<span lang="EN-US">IKE</span>的协商过程和调试信息，从调试信息中可以获取到协商到那个阶段，由于那些问题而协商失败。</font><span lang="EN-US"><br/></span><font face="宋体">以下是两端成功的协商信息。<span lang="EN-US">
                                        <p></p></span></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">注意：如果中途协商失败，两端需要执行<span lang="EN-US">clear&nbsp;crypto&nbsp;sa</span>命令来清除当前<span lang="EN-US">SA</span>的状态以便于重新协商。</font><span lang="EN-US"><br/></span><font face="宋体">几个与<span lang="EN-US">IPSec</span>相关的<span lang="EN-US">show</span>命令：</font><span lang="EN-US"><br/><font face="宋体">show&nbsp;crypto&nbsp;isakmp&nbsp;policy</font></span><font face="宋体">：查看路由器上已经配置了那些<span lang="EN-US">policy</span>；</font><span lang="EN-US"><br/><font face="宋体">show&nbsp;crypto&nbsp;isakmp&nbsp;connection&nbsp;</font></span><font face="宋体">：查看路由器上已经存在的<span lang="EN-US">isakmp&nbsp;</span>连接数；</font><span lang="EN-US"><br/><font face="宋体">show&nbsp;crypto&nbsp;isakmp&nbsp;identity</font></span><font face="宋体">：查看路由器上的身份标识方式；</font><span lang="EN-US"><br/><font face="宋体">show&nbsp;crypto&nbsp;ipsec&nbsp;sa</font></span><font face="宋体">；查看路由器上已经存在的<span lang="EN-US">IPSec&nbsp;SA</span>；该命令比较重要，有时候通过该命令来判断<span lang="EN-US">IPSec&nbsp;SA</span>是否已经建立成功。</font><span lang="EN-US"><br/><font face="宋体">Show&nbsp;crypto&nbsp;ipsec&nbsp;transform-set</font></span><font face="宋体">：查看路由器上已经配置的变换集合。</font><span lang="EN-US"><br/></span><font face="宋体">案例<span lang="EN-US">2</span>：路由器与路由器之动态加密映射</font><span lang="EN-US"><br/></span><font face="宋体">网络拓扑如图所示：</font><span lang="EN-US"><br/></span><font face="宋体">网络拓扑</font><font face="宋体"><span lang="EN-US">2<br/></span>下面简单说明其配置步骤：</font><span lang="EN-US"><br/><font face="宋体">IKE</font></span><font face="宋体">的配置与前述的配置步骤一样，主要是<span lang="EN-US">IPSec</span>的配置有些差异。动态加密映射是不需要配置所要保护的数据流。因此，步骤四：配置变换集合；步骤五：配置动态加密映射（在路由器上的命令是：<span lang="EN-US">crypto&nbsp;dynamic-map</span>）；步骤六：配置一个静态加密映射，将其与动态加密映射关联起来；步骤七：在接口上应用步骤六中配置的静态加密映射，此处不能也无法应用动态加密映射；</font><span lang="EN-US"><br/></span><font face="宋体">配置规划：<span lang="EN-US">MP803</span>所挂接的局域网当需要和总部通信的时候（源：<span lang="EN-US">192.168.2.0/24</span>；目的：<span lang="EN-US">192.168.1.0/24</span>），应该走<span lang="EN-US">VPN</span>隧道，这也是我们要保护的数据流，对于其他的数据流，例如局域网中的主机上网的数据流，应该是走<span lang="EN-US">NAT</span>（源：<span lang="EN-US">192.168.2.0/24</span>；目的：<span lang="EN-US">any</span>），很明显，这两个数据流是包含的关系，路由器的处理顺序是先进行<span lang="EN-US">NAT</span>转换，到了接口后再匹配<span lang="EN-US">VPN</span>隧道。因此在配置<span lang="EN-US">NAT</span>的数据流的时候，先要<span lang="EN-US">deny</span>掉该上总部内网的数据流。</font><span lang="EN-US"><br/></span><font face="宋体">具体配置脚本：</font><span lang="EN-US"><br/><font face="宋体">=================================================================<br/>MP803</font></span><font face="宋体">：<span lang="EN-US">ADSL</span>拨号，同时实现上网和走</font><span lang="EN-US"><font face="宋体">NAT<br/>=================================================================<br/>hostname&nbsp;MP803<br/>enable&nbsp;password&nbsp;[WOWWWNXSX&nbsp;encrypt<br/>no&nbsp;service&nbsp;password-encrypt<br/>no&nbsp;service&nbsp;enhanced-secure<br/>ip&nbsp;tcp&nbsp;timestamp<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">定义要保护的数据流</font><span lang="EN-US"><br/><font face="宋体">ip&nbsp;access-list&nbsp;extended&nbsp;1001<br/>permit&nbsp;ip&nbsp;192.168.2.0&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.255&nbsp;192.168.1.0&nbsp;0.0.0.255&nbsp;<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">定义该数据流走<span lang="EN-US">NAT</span>上网，为了避免走内网的数据流也<span lang="EN-US">“</span>上网<span lang="EN-US">”</span>去了，</font><span lang="EN-US"><br/><font face="宋体">//</font></span><font face="宋体">先<span lang="EN-US">deny</span>该数据流</font><span lang="EN-US"><br/><font face="宋体">ip&nbsp;access-list&nbsp;extended&nbsp;1002<br/>deny&nbsp;ip&nbsp;192.168.2.0&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.255&nbsp;192.168.1.0&nbsp;0.0.0.255<br/>permit&nbsp;ip&nbsp;192.168.2.0&nbsp;0.0.0.255&nbsp;any<br/>exit&nbsp;<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><br/><font face="宋体">dialer-list&nbsp;1&nbsp;protocol&nbsp;ip&nbsp;permit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">配置</font><span lang="EN-US"><font face="宋体">NAT<br/>ip&nbsp;nat&nbsp;inside&nbsp;source&nbsp;list&nbsp;1002&nbsp;interface&nbsp;dialer0&nbsp;overload<p></p></font></span></span></p><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><br/>crypto&nbsp;isakmp&nbsp;policy&nbsp;1<br/>encryption&nbsp;des<br style="mso-special-character: line-break;"/><br style="mso-special-character: line-break;"/></span>

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时间:  2007-8-18 09:42

作者: liuguo_hello

<p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">hash&nbsp;sha&nbsp;<br/>authentication&nbsp;pre-share<br/>group&nbsp;2<br/>lifetime&nbsp;28800<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">crypto&nbsp;isakmp&nbsp;key&nbsp;maipu&nbsp;address&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">crypto&nbsp;ipsec&nbsp;transform-set&nbsp;tr1&nbsp;esp-des&nbsp;ah-md5-hmac<br/>mode&nbsp;tunnel<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">crypto&nbsp;map&nbsp;map1&nbsp;1001&nbsp;ipsec-isakmp<br/>match&nbsp;address&nbsp;1001<br/>set&nbsp;peer&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3<br/>set&nbsp;transform-set&nbsp;tr1&nbsp;<br/>set&nbsp;security-association&nbsp;lifetime&nbsp;seconds&nbsp;28800<br/>set&nbsp;security-association&nbsp;lifetime&nbsp;kilobytes&nbsp;4608000<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;loopback0<br/>exit&nbsp;<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">拨号配置，<span lang="EN-US">map</span>是应用到本虚拟接口</font><span lang="EN-US"><br/><font face="宋体">interface&nbsp;dialer0<br/>ip&nbsp;address&nbsp;negotiated<br/>dialer&nbsp;pool&nbsp;1<br/>dialer-group&nbsp;1<br/>encapsulation&nbsp;ppp<br/>ppp&nbsp;pap&nbsp;sent-username&nbsp;01234mp@169&nbsp;password&nbsp;01234mp<br/>mtu&nbsp;1492<br/>ip&nbsp;nat&nbsp;outside<br/>crypto&nbsp;map&nbsp;map1<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;fastethernet0<br/>ip&nbsp;address&nbsp;192.168.2.1&nbsp;255.255.255.0<br/>ip&nbsp;nat&nbsp;inside<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">物理接口配置</font><span lang="EN-US"><br/><font face="宋体">interface&nbsp;atm0<br/>pvc&nbsp;1/33<br/>encapsulation&nbsp;aal5snap<br/>pppoe-client&nbsp;dial-pool-number&nbsp;1<br/>no&nbsp;ip&nbsp;route-cache<br/>no&nbsp;cdp&nbsp;enable<br/>exit&nbsp;<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">ip&nbsp;route&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.0&nbsp;0.0.0.0&nbsp;dialer0<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><br/><font face="宋体">=======================================================<br/>MP<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="2600" unitname="a">2600A</chmetcnv></font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">：配置动态加密映射</font><span lang="EN-US"><br/><font face="宋体">=======================================================<br/>MP<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="2600" unitname="a">2600A</chmetcnv>#sh&nbsp;running-config&nbsp;<br/>Building&nbsp;Configuration...done<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">Current&nbsp;configuration...<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">version&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">2.24.8</chsdate><br/>hostname&nbsp;MP<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="2600" unitname="a">2600A</chmetcnv><br/>enable&nbsp;password&nbsp;[WOWWWNXSX&nbsp;encrypt<br/>no&nbsp;service&nbsp;password-encrypt<br/>no&nbsp;service&nbsp;enhanced-secure<br/>ip&nbsp;tcp&nbsp;timestamp<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><br/><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤四<span lang="EN-US">:</span>配置变换集合<span lang="EN-US">,</span>定义数据加密所使用的算法和安全协议</font><span lang="EN-US"><br/><font face="宋体">crypto&nbsp;ipsec&nbsp;transform-set&nbsp;tr1&nbsp;esp-des&nbsp;esp-md5-hmac<br/>mode&nbsp;tunnel<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤五<span lang="EN-US">:</span>配置动态加密映射</font><span lang="EN-US"><br/><font face="宋体">crypto&nbsp;dynamic-map&nbsp;dmap1&nbsp;1&nbsp;ipsec-isakmp<br/>set&nbsp;transform-set&nbsp;tr1&nbsp;<br/>set&nbsp;security-association&nbsp;lifetime&nbsp;seconds&nbsp;28800<br/>set&nbsp;security-association&nbsp;lifetime&nbsp;kilobytes&nbsp;4608000<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤六<span lang="EN-US">:</span>配置静态加密映射，与该动态加密映射关联起来</font><span lang="EN-US"><br/><font face="宋体">crypto&nbsp;map&nbsp;map1&nbsp;1&nbsp;ipsec-isakmp&nbsp;dynamic-map&nbsp;dmap1<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;fastethernet0<br/>ip&nbsp;address&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3&nbsp;255.255.255.0<br/>//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤七<span lang="EN-US">:</span>将静态加密映射应用到接口上去</font><span lang="EN-US"><font face="宋体">.<br/>crypto&nbsp;map&nbsp;map1<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;ethernet0<br/>ip&nbsp;address&nbsp;192.168.1.1&nbsp;255.255.255.0<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">ip&nbsp;route&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.0&nbsp;0.0.0.0&nbsp;1.1.1.1<p></p></font></span></p>

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时间:  2007-8-18 09:43

作者: liuguo_hello

<p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤<span lang="EN-US">1</span>：配置<span lang="EN-US">IKE</span>的</font><span lang="EN-US"><font face="宋体">policy<br/>crypto&nbsp;isakmp&nbsp;policy&nbsp;1<br/>encryption&nbsp;des<br/>hash&nbsp;sha<br/>authentication&nbsp;pre-share<br/>group&nbsp;1<br/>lifetime&nbsp;86400<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤<span lang="EN-US">2:</span>配置预共享密钥，由于下端是动态<span lang="EN-US">IP</span>地址，因此配置地址为</font><font face="宋体"><span lang="EN-US">any<br/>//</span>删除该预共享密钥的命令是</font><span lang="EN-US"><font face="宋体">no&nbsp;crypto&nbsp;isakmp&nbsp;key&nbsp;hostname&nbsp;any<br/>crypto&nbsp;isakmp&nbsp;key&nbsp;maipu&nbsp;any<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">注意：在完成配置，进行数据流触发的时候，需要注意的是要保证<span lang="EN-US">ADSL</span>拨号能够获取到<span lang="EN-US">IP</span>地址，在下端路由器上能够<span lang="EN-US">ping</span>通上端路由器。<span lang="EN-US"><p></p></span></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">案例<span lang="EN-US">3</span>：<span lang="EN-US">VPN</span>与<span lang="EN-US">VPN</span>互通</font><span lang="EN-US"><br/></span><font face="宋体">网络拓扑如图所示：<span lang="EN-US"><p></p></span></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">网络拓扑</font><font face="宋体"><span lang="EN-US">3<br/></span>需求：两台<span lang="EN-US">VPN3020</span>，都有固定的公网<span lang="EN-US">IP</span>地址，现在需要构建<span lang="EN-US">VPN</span>，保护在两台<span lang="EN-US">VPN3020</span>后面的网络。使<span lang="EN-US">C1</span>能够访问到<span lang="EN-US">C2</span>。</font><span lang="EN-US"><br/></span><font face="宋体">规划：使用<span lang="EN-US">IKE</span>自动协商密钥，<span lang="EN-US">policy</span>的参数设置，加密算法为<span lang="EN-US">des</span>、验证算法为<span lang="EN-US">md5</span>，认证方式为预共享、<span lang="EN-US">D-H</span>组为<span lang="EN-US">group&nbsp;1</span>；身份标识为<span lang="EN-US">IP</span>地址，以<span lang="EN-US">IP</span>地址作来标识预共享密钥；变换集合参数设置，隧道模式为<span lang="EN-US">tunnel</span>、协议<span lang="EN-US">-</span>算法为<span lang="EN-US">esp-des</span>、<span lang="EN-US">esp-md5</span>；启用<span lang="EN-US">pfs</span>，<span lang="EN-US">group</span>组为<span lang="EN-US">group2</span>。</font><span lang="EN-US"><br/></span><font face="宋体">配置注意事项：</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>避免配置所要保护的数据流为<span lang="EN-US">any</span>到<span lang="EN-US">any</span>。首先是在实际使用过程中，不会有这样的需求，其次，这样会让很多本来不需要加密的通信无法通信。并且，<span lang="EN-US">VPN3020</span>上目前也不支持配置的数据流为<span lang="EN-US">any</span>到<span lang="EN-US">any</span>。</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;VPN3020</span>本身带有<span lang="EN-US">FW520</span>的所有功能，其默认转发策略是<span lang="EN-US">deny</span>，因此，需要打开其策略。避免内网的数据无法通过<span lang="EN-US">VPN</span>访问外面。</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>由于<span lang="EN-US">VPN3020</span>实现上的一个缺陷，使得在每次更改接口的<span lang="EN-US">IP</span>地址的时候，需要重起<span lang="EN-US">IPSec</span>服务（不是重起设备），而重起<span lang="EN-US">IPSec</span>服务会造成有关<span lang="EN-US">IPSec</span>的配置都丢失，因此，或者在配置好接口地址后，重起<span lang="EN-US">IPSec</span>的服务，进行<span lang="EN-US">IPSec</span>的配置；或者将<span lang="EN-US">IPSec</span>的配置<span lang="EN-US">copy</span>到记事本上，然后重起<span lang="EN-US">IPSec</span>服务后，粘贴进去。</font><span lang="EN-US"><br/></span><font face="宋体">配置完成或者更改后，需要激活加密映射（用<span lang="EN-US">active&nbsp;map</span>命令）</font><span lang="EN-US"><br/></span><font face="宋体">具体配置脚本：</font><span lang="EN-US"><br/><font face="宋体">=================================================<br/>VPN_A<br/>=================================================<br/>Building&nbsp;configuration...<br/>!&nbsp;system&nbsp;setting<br/>configure&nbsp;terminal<br/>hostname&nbsp;VPN_A<br/>enable&nbsp;password&nbsp;0&nbsp;mpsec<br/>mode&nbsp;route<br/>interface&nbsp;trusted&nbsp;ip&nbsp;192.168.1.1/255.255.255.0<br/>interface&nbsp;untrusted&nbsp;ip&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3/255.255.255.0<br/>ip&nbsp;route&nbsp;0.0.0.0/0.0.0.0&nbsp;1.1.1.1<br/>service&nbsp;sshd<br/>web&nbsp;port&nbsp;443<br/>web&nbsp;idle&nbsp;enable<br/>web&nbsp;idle&nbsp;999<br/>service&nbsp;web<br/>end<br/>!&nbsp;log&nbsp;config<br/>configure&nbsp;log<br/>logging&nbsp;user&nbsp;stop<br/>logging&nbsp;delete&nbsp;all<br/>end<br/>!&nbsp;firewall&nbsp;config<br/>configure&nbsp;firewall<br/>firewall&nbsp;log&nbsp;start<br/>dnat&nbsp;policy&nbsp;permit<br/>snat&nbsp;policy&nbsp;permit<br/>ldnat&nbsp;policy&nbsp;permit<br/>access-list&nbsp;policy&nbsp;input&nbsp;permit<br/>//</font></span><font face="宋体">默认转发策略是</font><span lang="EN-US"><font face="宋体">permit<br/>access-list&nbsp;policy&nbsp;forward&nbsp;permit<br/>access-list&nbsp;policy&nbsp;output&nbsp;permit<br/>srr&nbsp;filter&nbsp;enable<br/>end<br/>!&nbsp;vpn&nbsp;config <p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">configure&nbsp;vpn<br/>//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">启动<span lang="EN-US">IPSec</span>服务</font><span lang="EN-US"><br/><font face="宋体">service&nbsp;ipsec<br/>//</font></span><font face="宋体">进入<span lang="EN-US">ipsec</span>模式</font><span lang="EN-US"><br/><font face="宋体">ipsec<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤四<span lang="EN-US">:</span>配置访问列表，定义要保护的数据流</font><span lang="EN-US"><br/><font face="宋体">access-list&nbsp;add&nbsp;ac1&nbsp;permit<br/>protocol&nbsp;ip&nbsp;192.168.1.0/255.255.255.0&nbsp;192.168.2.0/255.255.255.0<br/>commit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤五：配置变换集合，定义所使用的加密算法和安全协议</font><span lang="EN-US"><br/><font face="宋体">transform&nbsp;add&nbsp;tr1&nbsp;tunnel&nbsp;esp-des&nbsp;esp-md5-hmac<p></p></font></span></span></p><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">//</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">步骤六：配置加密映射，将各个组件组合在一起。</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><br/>map&nbsp;add&nbsp;map1&nbsp;untrusted&nbsp;isakmp<br/>match&nbsp;/ac1&nbsp;//</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">引用步骤四中的定义的数据流</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><br/>transform&nbsp;tr1&nbsp;//</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">引用步骤五中的定义的变换集合</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><br/>peer&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">2.2.2</chsdate>.2<br style="mso-special-character: line-break;"/><br style="mso-special-character: line-break;"/></span>

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时间:  2007-8-18 09:43

作者: liuguo_hello

<p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">life&nbsp;time&nbsp;28800<br/>life&nbsp;bytes&nbsp;4608000<br/>pfs&nbsp;2&nbsp;//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">配置支持完美前向保护</font><span lang="EN-US"><br/><font face="宋体">commit<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">进入<span lang="EN-US">IKE</span>模式</font><span lang="EN-US"><br/><font face="宋体">ike<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤一：配置<span lang="EN-US">IKE</span>的</font><span lang="EN-US"><font face="宋体">policy<br/>policy&nbsp;add&nbsp;1<br/>authentication&nbsp;pre-share<br/>encryption&nbsp;des<br/>hash&nbsp;md5<br/>group&nbsp;2<br/>lifetime&nbsp;28800<br/>commit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤二<span lang="EN-US">:</span>配置预共享密钥</font><span lang="EN-US"><br/><font face="宋体">key&nbsp;preshare&nbsp;ip&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">2.2.2</chsdate>.2&nbsp;keystring&nbsp;maipu<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤三<span lang="EN-US">:</span>配置本地标识</font><span lang="EN-US"><br/><font face="宋体">localid&nbsp;ip&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤七；启用该</font><font face="宋体"><span lang="EN-US">map<br/>active&nbsp;map&nbsp;map1<br/>end<br/>!&nbsp;user&nbsp;config<br/>-----</span>以下的配置略<span lang="EN-US"><p></p></span></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">=================================================<br/>VPN_B<br/>=================================================<br/>Building&nbsp;configuration...<br/>!&nbsp;system&nbsp;setting<br/>configure&nbsp;terminal<br/>hostname&nbsp;VPN_B<br/>enable&nbsp;password&nbsp;0&nbsp;mpsec<br/>mode&nbsp;route<br/>interface&nbsp;trusted&nbsp;ip&nbsp;192.168.2.1/255.255.255.0<br/>interface&nbsp;untrusted&nbsp;ip&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">2.2.2</chsdate>.2/255.255.255.0<br/>ip&nbsp;route&nbsp;0.0.0.0/0.0.0.0&nbsp;2.2.2.1<br/>service&nbsp;sshd<br/>web&nbsp;port&nbsp;443<br/>web&nbsp;idle&nbsp;enable<br/>web&nbsp;idle&nbsp;999<br/>service&nbsp;web<br/>end<br/>!&nbsp;log&nbsp;config<br/>configure&nbsp;log<br/>logging&nbsp;user&nbsp;stop<br/>logging&nbsp;delete&nbsp;all<br/>end<br/>!&nbsp;firewall&nbsp;config<br/>configure&nbsp;firewall<br/>firewall&nbsp;log&nbsp;start<br/>dnat&nbsp;policy&nbsp;permit<br/>snat&nbsp;policy&nbsp;permit<br/>ldnat&nbsp;policy&nbsp;permit<br/>access-list&nbsp;policy&nbsp;input&nbsp;permit<br/>access-list&nbsp;policy&nbsp;forward&nbsp;permit<br/>access-list&nbsp;policy&nbsp;output&nbsp;permit<br/>srr&nbsp;filter&nbsp;enable<br/>end<br/>!&nbsp;vpn&nbsp;config<br/>configure&nbsp;vpn<br/>service&nbsp;ipsec<br/>ipsec<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤四<span lang="EN-US">:</span>配置访问列表，定义要保护的数据流，与<span lang="EN-US">VPN_A</span>所定义的数据流相对应</font><span lang="EN-US"><br/><font face="宋体">access-list&nbsp;add&nbsp;ac1&nbsp;permit<br/>protocol&nbsp;ip&nbsp;192.168.2.0/255.255.255.0&nbsp;192.168.1.0/255.255.255.0<br/>commit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">transform&nbsp;add&nbsp;tr1&nbsp;tunnel&nbsp;esp-des&nbsp;esp-md5-hmac<br/>map&nbsp;add&nbsp;map1&nbsp;untrusted&nbsp;isakmp<br/>match&nbsp;/ac1&nbsp;<br/>transform&nbsp;tr1&nbsp;<br/>peer&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3<br/>life&nbsp;time&nbsp;28800<br/>life&nbsp;bytes&nbsp;4608000<br/>pfs&nbsp;2&nbsp;<br/>commit<br/>exit<br/>ike<br/>policy&nbsp;add&nbsp;1<br/>authentication&nbsp;pre-share<br/>encryption&nbsp;des<br/>hash&nbsp;md5<br/>group&nbsp;group_modp1024<br/>lifetime&nbsp;28800<br/>commit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤二<span lang="EN-US">:</span>配置预共享密钥</font><span lang="EN-US"><br/><font face="宋体">key&nbsp;preshare&nbsp;ip&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3&nbsp;keystring&nbsp;maipu<br/>localid&nbsp;ip&nbsp;2.2.2.2<br/>exit<br/>active&nbsp;map&nbsp;map1<br/>end<br/>!&nbsp;user&nbsp;config<br/>-----</font></span><font face="宋体">以下的配置略</font><span lang="EN-US"><br/><font face="宋体">VPN3020</font></span><font face="宋体">上的调试命令：</font><span lang="EN-US"><br/></span><font face="宋体">目前，<span lang="EN-US">VPN3020</span>上没有给用户使用的调试命令，只能通过一些<span lang="EN-US">show</span>信息来查看<span lang="EN-US">IKE</span>协商的情况。</font><span lang="EN-US"><br/><font face="宋体">show&nbsp;ipsec&nbsp;sa</font></span><font face="宋体">：查看已经建立的<span lang="EN-US">IPSec&nbsp;SA</span>信息</font><span lang="EN-US"><br/><font face="宋体">show&nbsp;ipsec&nbsp;status</font></span><font face="宋体">：查看当前的<span lang="EN-US">IPSec&nbsp;</span>的状态，如果<span lang="EN-US">IPSec&nbsp;SA</span>已经建立，有<span lang="EN-US">IPSec&nbsp;SA&nbsp;establish</span>的信息。</font><span lang="EN-US"><br/></span><font face="宋体">案例<span lang="EN-US">4</span>：<span lang="EN-US">VPN</span>与<span lang="EN-US">VPN</span>、路由器之动态加密映射</font><span lang="EN-US"><br/></span><font face="宋体">网络拓扑如图所示：<span lang="EN-US"><p></p></span></font></span></p><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">需求：中心是一台</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">VPN3020</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">，有两个网点其中一台是</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">vpn3020</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">（或者是</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">vpn3005</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">，两者的配置是一样的），另一个网点是</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">mp803</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">路由器。接入都是动态接入，电信</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">ADSL</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">接入。</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">MP803</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">可以直接拨号，而</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">VPN3020</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">（或者</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">VPN3005</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">）只有以太口，因此，前面要放置一台</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">ADSL&nbsp;modem</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">，才能够进行</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">PPoE</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">拨号。现在要求是两个网点所挂接两个网络能够访问中心</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">VPN3020</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">后面所挂接的网络（</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">C2</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">）。</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">规划：一些具体的</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">IKE</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">、</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">IPSec</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">协商的参数在这里略去。这里重点说明中心</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">VPN</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">（</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">VPN_A</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">）上面的规划，中心可以只配置一个动态的</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">map</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">，数据流源地址为</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">192.168.1.0/24</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">，目的地址为</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">any</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">（注意，不要配置成</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">any&nbsp;</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">到</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">any</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">），下端的</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">VPN_B</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">的数据流为源地址为</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">192.168.2.0/24&nbsp;</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">目的地址为</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">192.168.1.0/24</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">；下端的</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">MP803</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">的数据流为源地址为</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">192.168.3.0/24</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">，目的地址为</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">192.168.1.0/24</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">。</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">具体配置脚本：</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">&nbsp;<br/>=================================================================<br style="mso-special-character: line-break;"/><br style="mso-special-character: line-break;"/></span>

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时间:  2007-8-18 09:44

作者: liuguo_hello

<p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">MP803</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">：<span lang="EN-US">ADSL</span>拨号，同时实现上网和走</font><span lang="EN-US"><font face="宋体">NAT<br/>=================================================================<br/>hostname&nbsp;MP803<br/>enable&nbsp;password&nbsp;[WOWWWNXSX&nbsp;encrypt<br/>no&nbsp;service&nbsp;password-encrypt<br/>no&nbsp;service&nbsp;enhanced-secure<br/>ip&nbsp;tcp&nbsp;timestamp<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">定义要保护的数据流</font><span lang="EN-US"><br/><font face="宋体">ip&nbsp;access-list&nbsp;extended&nbsp;1001<br/>permit&nbsp;ip&nbsp;192.168.3.0&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.255&nbsp;192.168.1.0&nbsp;0.0.0.255&nbsp;<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">定义该数据流走<span lang="EN-US">NAT</span>上网，为了避免走内网的数据流也<span lang="EN-US">“</span>上网<span lang="EN-US">”</span>去了，</font><span lang="EN-US"><br/><font face="宋体">//</font></span><font face="宋体">先<span lang="EN-US">deny</span>该数据流</font><span lang="EN-US"><br/><font face="宋体">ip&nbsp;access-list&nbsp;extended&nbsp;1002<br/>deny&nbsp;ip&nbsp;192.168.3.0&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.255&nbsp;192.168.1.0&nbsp;0.0.0.255<br/>permit&nbsp;ip&nbsp;192.168.3.0&nbsp;0.0.0.255&nbsp;any<br/>exit&nbsp;<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><br/><font face="宋体">dialer-list&nbsp;1&nbsp;protocol&nbsp;ip&nbsp;permit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">配置</font><span lang="EN-US"><font face="宋体">NAT<br/>ip&nbsp;nat&nbsp;inside&nbsp;source&nbsp;list&nbsp;1002&nbsp;interface&nbsp;dialer0&nbsp;overload<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><br/><font face="宋体">crypto&nbsp;isakmp&nbsp;policy&nbsp;1<br/>encryption&nbsp;des<br/>hash&nbsp;sha&nbsp;<br/>authentication&nbsp;pre-share<br/>group&nbsp;2<br/>lifetime&nbsp;28800<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">crypto&nbsp;isakmp&nbsp;key&nbsp;maipu&nbsp;address&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">crypto&nbsp;ipsec&nbsp;transform-set&nbsp;tr1&nbsp;esp-des&nbsp;esp-md5-hmac<br/>mode&nbsp;tunnel<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">crypto&nbsp;map&nbsp;map1&nbsp;1001&nbsp;ipsec-isakmp<br/>match&nbsp;address&nbsp;1001<br/>set&nbsp;peer&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3<br/>set&nbsp;transform-set&nbsp;tr1&nbsp;<br/>set&nbsp;security-association&nbsp;lifetime&nbsp;seconds&nbsp;28800<br/>set&nbsp;security-association&nbsp;lifetime&nbsp;kilobytes&nbsp;4608000<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;loopback0<br/>exit&nbsp;<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">拨号配置，<span lang="EN-US">map</span>是应用到本虚拟接口</font><span lang="EN-US"><br/><font face="宋体">interface&nbsp;dialer0<br/>ip&nbsp;address&nbsp;negotiated<br/>dialer&nbsp;pool&nbsp;1<br/>dialer-group&nbsp;1<br/>encapsulation&nbsp;ppp<br/>ppp&nbsp;pap&nbsp;sent-username&nbsp;01234mp@169&nbsp;password&nbsp;01234mp<br/>mtu&nbsp;1492<br/>ip&nbsp;nat&nbsp;outside<br/>crypto&nbsp;map&nbsp;map1<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">interface&nbsp;fastethernet0<br/>ip&nbsp;address&nbsp;192.168.3.1&nbsp;255.255.255.0<br/>ip&nbsp;nat&nbsp;inside<br/>exit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">物理接口配置</font><span lang="EN-US"><br/><font face="宋体">interface&nbsp;atm0<br/>pvc&nbsp;1/33<br/>encapsulation&nbsp;aal5snap<br/>pppoe-client&nbsp;dial-pool-number&nbsp;1<br/>no&nbsp;ip&nbsp;route-cache<br/>no&nbsp;cdp&nbsp;enable<br/>exit&nbsp;<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">ip&nbsp;route&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.0&nbsp;0.0.0.0&nbsp;dialer0<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><br/><font face="宋体">=================================================================<br/>VPN_B</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">：<span lang="EN-US">PPoE</span>拨号，同时实现上网和走</font><span lang="EN-US"><font face="宋体">NAT<br/>=================================================================<br/>configure&nbsp;terminal<br/>hostname&nbsp;VPN_B<br/>enable&nbsp;password&nbsp;7&nbsp;Z2wdXYed9yoyw<br/>mode&nbsp;route<br/>interface&nbsp;trusted&nbsp;ip&nbsp;192.168.2.1/255.255.255.0<br/>service&nbsp;sshd<br/>web&nbsp;port&nbsp;443<br/>web&nbsp;idle&nbsp;enable<br/>web&nbsp;idle&nbsp;10<br/>service&nbsp;web<br/>end<br/>!&nbsp;log&nbsp;config<br/>configure&nbsp;log<br/>logging&nbsp;user&nbsp;stop<br/>logging&nbsp;delete&nbsp;all<br/>logging&nbsp;user&nbsp;delete&nbsp;all<br/>end<br/>!&nbsp;firewall&nbsp;config<br/>configure&nbsp;firewall<br/>firewall&nbsp;log&nbsp;start<br/>dnat&nbsp;policy&nbsp;permit<br/>snat&nbsp;policy&nbsp;permit<br/>ldnat&nbsp;policy&nbsp;permit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">对于走<span lang="EN-US">VPN</span>的数据流，避免让其走<span lang="EN-US">SNAT</span>出去</font><span lang="EN-US"><br/><font face="宋体">snat&nbsp;add&nbsp;any&nbsp;192.168.2.0/24&nbsp;192.168.1.0/24&nbsp;any&nbsp;filter&nbsp;/snat1&nbsp;log&nbsp;permit<br/>//</font></span><font face="宋体">对于其他的数据流，都让其走<span lang="EN-US">SNAT</span>出去</font><span lang="EN-US"><br/><font face="宋体">snat&nbsp;add&nbsp;masquerade&nbsp;pppoe&nbsp;192.168.2.0/24&nbsp;any&nbsp;/snat2&nbsp;log<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">access-list&nbsp;policy&nbsp;input&nbsp;permit<br/>access-list&nbsp;policy&nbsp;forward&nbsp;permit<br/>access-list&nbsp;policy&nbsp;output&nbsp;permit<br/>access-list&nbsp;state&nbsp;input&nbsp;enable<br/>access-list&nbsp;state&nbsp;forward&nbsp;enable<br/>access-list&nbsp;state&nbsp;output&nbsp;enable<br/>srr&nbsp;filter&nbsp;enable<br/>end<br/>!&nbsp;vpn&nbsp;config<br/>configure&nbsp;vpn<br/>service&nbsp;ipsec<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">启动<span lang="EN-US">service&nbsp;dynamic</span>，表示本端为动态获取<span lang="EN-US">IP</span>地址</font><span lang="EN-US"><br/><font face="宋体">service&nbsp;dynamic&nbsp;interface&nbsp;ppp<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">ipsec<br/>//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">定义所要保护的数据流</font><span lang="EN-US"><br/><font face="宋体">access-list&nbsp;add&nbsp;/ac1&nbsp;permit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">protocol&nbsp;ip&nbsp;192.168.2.0/255.255.255.0&nbsp;192.168.1.0/255.255.255.0<br/>commit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">定义变换集合</font><span lang="EN-US"><br/><font face="宋体">transform&nbsp;add&nbsp;tr1&nbsp;tunnel&nbsp;esp-des&nbsp;esp-md5-hmac<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">配置加密映射，注意此处选择关键字是</font><font face="宋体"><span lang="EN-US">dynamic<br/>map&nbsp;add&nbsp;map1&nbsp;dynamic&nbsp;isakmp<br/>//</span>引用所定义的访问列表</font><span lang="EN-US"><br/><font face="宋体">match&nbsp;/ac1<br/>//</font></span><font face="宋体">引用所定义的变换集合</font><span lang="EN-US"><br/><font face="宋体">transform&nbsp;tr1<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">peer&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3<br/>life&nbsp;time&nbsp;86600<br/>life&nbsp;bytes&nbsp;4608000<br/>pfs&nbsp;2<br/>commit<br/>exit<p></p></font></span></p><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><br/>ike<br/>//</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">定义</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">IKE</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">的</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">policy<br/>policy&nbsp;add&nbsp;1<br/>authentication&nbsp;pre-share<br style="mso-special-character: line-break;"/><br style="mso-special-character: line-break;"/></span>

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时间:  2007-8-18 09:44

作者: liuguo_hello

<p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">encryption&nbsp;des<br/>hash&nbsp;sha<br/>group&nbsp;2<br/>lifetime&nbsp;28800<br/>commit<p></p></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">配置预共享密钥</font><span lang="EN-US"><br/><font face="宋体">key&nbsp;preshare&nbsp;ip&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3&nbsp;keystring&nbsp;maipu<br/>exit<br/>//</font></span><font face="宋体">激活</font><span lang="EN-US"><font face="宋体">map<br/>active&nbsp;map&nbsp;map1<br/>end<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><font face="宋体"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;">----</span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;">中间的配置略<span lang="EN-US"><p></p></span></span></font></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">!&nbsp;pppoe&nbsp;client&nbsp;config<br/>configure&nbsp;pppoeclient<br/>//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">绑定到出口，即从那个接口进行拨号</font><span lang="EN-US"><br/><font face="宋体">bind&nbsp;untrusted<br/>//</font></span><font face="宋体">配置上端需要认证的用户名和密码</font><span lang="EN-US"><br/><font face="宋体">authuser&nbsp;test_name&nbsp;pass&nbsp;test_name<br/>//</font></span><font face="宋体">开始进行拨号，完成该命令后用<span lang="EN-US">show&nbsp;ip&nbsp;route</span>或者</font><font face="宋体"><span lang="EN-US">show&nbsp;interface<br/>//</span>能够看到<span lang="EN-US">PP</span>链路已经建立成功</font><span lang="EN-US"><br/><font face="宋体">pppoe&nbsp;start<br/>end<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><font face="宋体"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;">---</span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;">后面的配置略<span lang="EN-US"><p></p></span></span></font></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">=================================================================<br/>VPN_A</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">：中心的</font><font face="宋体"><span lang="EN-US">VPN<br/>=================================================================<br/>!&nbsp;system&nbsp;setting<br/>configure&nbsp;terminal<br/>hostname&nbsp;VPN_A<br/>enable&nbsp;password&nbsp;0&nbsp;mpsec<br/>mode&nbsp;route<br/>interface&nbsp;trusted&nbsp;ip&nbsp;192.168.1.1/255.255.255.0<br/>interface&nbsp;untrusted&nbsp;ip&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3/255.255.255.0<br/>ip&nbsp;route&nbsp;0.0.0.0/0.0.0.0&nbsp;1.1.1.1<br/>service&nbsp;sshd<br/>web&nbsp;port&nbsp;443<br/>web&nbsp;idle&nbsp;enable<br/>web&nbsp;idle&nbsp;999<br/>service&nbsp;web<br/>end<br/>!&nbsp;log&nbsp;config<br/>configure&nbsp;log<br/>logging&nbsp;user&nbsp;stop<br/>logging&nbsp;delete&nbsp;all<br/>end<br/>!&nbsp;firewall&nbsp;config<br/>configure&nbsp;firewall<br/>firewall&nbsp;log&nbsp;start<br/>dnat&nbsp;policy&nbsp;permit<br/>snat&nbsp;policy&nbsp;permit<br/>ldnat&nbsp;policy&nbsp;permit<br/>access-list&nbsp;policy&nbsp;input&nbsp;permit<br/>//</span>默认转发策略是</font><span lang="EN-US"><font face="宋体">permit<br/>access-list&nbsp;policy&nbsp;forward&nbsp;permit<br/>access-list&nbsp;policy&nbsp;output&nbsp;permit<br/>srr&nbsp;filter&nbsp;enable<br/>end<br/>!&nbsp;vpn&nbsp;config<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">configure&nbsp;vpn<br/>//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">启动<span lang="EN-US">IPSec</span>服务</font><span lang="EN-US"><br/><font face="宋体">service&nbsp;ipsec<br/>//</font></span><font face="宋体">进入<span lang="EN-US">ipsec</span>模式</font><span lang="EN-US"><br/><font face="宋体">ipsec<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤四<span lang="EN-US">:</span>配置访问列表，定义要保护的数据流</font><span lang="EN-US"><br/><font face="宋体">access-list&nbsp;add&nbsp;ac1&nbsp;permit<br/>protocol&nbsp;ip&nbsp;192.168.1.0/255.255.255.0&nbsp;any<br/>commit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤五：配置变换集合，定义所使用的加密算法和安全协议</font><span lang="EN-US"><br/><font face="宋体">transform&nbsp;add&nbsp;tr1&nbsp;tunnel&nbsp;esp-des&nbsp;esp-md5-hmac<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤六：配置加密映射，将各个组件组合在一起。</font><span lang="EN-US"><br/><font face="宋体">map&nbsp;add&nbsp;map1&nbsp;untrusted&nbsp;isakmp<br/>//</font></span><font face="宋体">引用步骤四中的定义的数据流</font><span lang="EN-US"><br/><font face="宋体">match&nbsp;/ac1<br/>//</font></span><font face="宋体">引用步骤五中的定义的变换集合</font><font face="宋体"><span lang="EN-US">&nbsp;<br/>transform&nbsp;tr1&nbsp;<br/>peer&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.0<br/>life&nbsp;time&nbsp;28800<br/>life&nbsp;bytes&nbsp;4608000<br/>//</span>配置完美前向保护</font><span lang="EN-US"><br/><font face="宋体">pfs&nbsp;2&nbsp;<br/>commit<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">进入<span lang="EN-US">IKE</span>模式</font><span lang="EN-US"><br/><font face="宋体">ike<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤一：配置<span lang="EN-US">IKE</span>的</font><span lang="EN-US"><font face="宋体">policy<br/>policy&nbsp;add&nbsp;1<br/>authentication&nbsp;pre-share<br/>encryption&nbsp;des<br/>hash&nbsp;md5<br/>group&nbsp;2<br/>lifetime&nbsp;28800<br/>commit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤二<span lang="EN-US">:</span>配置预共享密钥</font><span lang="EN-US"><br/><font face="宋体">key&nbsp;preshare&nbsp;ip&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">0.0.0</chsdate>.0&nbsp;keystring&nbsp;maipu<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤三<span lang="EN-US">:</span>配置本地标识</font><span lang="EN-US"><br/><font face="宋体">localid&nbsp;ip&nbsp;<chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.1.1</chsdate>.3<br/>exit<p></p></font></span></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">//</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">步骤七；启用该</font><font face="宋体"><span lang="EN-US">map<br/>active&nbsp;map&nbsp;map1<br/>end<br/>!&nbsp;user&nbsp;config<br/>-----</span>以下的配置略<span lang="EN-US"><p></p></span></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">配置总结</font><span lang="EN-US"><br/></span><font face="宋体">常见的配置失误：</font><span lang="EN-US"><br/><font face="宋体">1</font></span><font face="宋体">．<span lang="EN-US">&nbsp;</span>现象：一端发起协商后，另一端没有任何响应。</font><span lang="EN-US"><br/></span><font face="宋体">可能的原因：</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>检查发起协商的数据流是否匹配所定义的要保护的数据流；</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>检查路由器上是否有默认路由或者到远端局域网段的路由；</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>检查加密映射（<span lang="EN-US">map</span>）是否已经应用到接口上去；</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>检查两端的<span lang="EN-US">peer</span>地址是否配置正确，确保两个<span lang="EN-US">VPN</span>网关本身能够互通；</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>检查预共享密钥是否已经配置；</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>如果发起协商的一端是路由器，对端是<span lang="EN-US">VPN3020</span>，检查是否配置了<span lang="EN-US">crypto&nbsp;isakmp&nbsp;peer&nbsp;ip-address&nbsp;A.B.C.D</span>，该命令的含义是以野蛮模式发起协商，而目前<span lang="EN-US">VPN3020</span>上尚不支持野蛮模式。</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>如果其中有台<span lang="EN-US">VPN</span>设备是<span lang="EN-US">VPN3020</span>，确保在配置的时候是先配置了接口地址，然后启动<span lang="EN-US">service&nbsp;ipsec</span>命令的，见案例<span lang="EN-US">3</span>中的配置注意事项。<span lang="EN-US"><p></p></span></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">2</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">．<span lang="EN-US">&nbsp;</span>现象：<span lang="EN-US">IKE&nbsp;SA</span>（又称第一阶段主模式）协商不成功</font><span lang="EN-US"><br/></span><font face="宋体">可能的原因：</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>检查两端是否有一致的<span lang="EN-US">policy</span>，如果规划使用预共享认证方式，确保双方一致的<span lang="EN-US">policy</span>中的认证方式为预共享；</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>预共享密钥是否配置是否一致；<span lang="EN-US"><p></p></span></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">3</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">．<span lang="EN-US">&nbsp;</span>现象：<span lang="EN-US">IKE&nbsp;SA</span>协商成功了，但是快速模式协商不成功，<span lang="EN-US">IPSec&nbsp;SA</span>无法建立</font><span lang="EN-US"><br/></span><font face="宋体">可能的原因：</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>两端的是否有一致的变化集合；</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>两端的所要保护的数据流是否相对应；</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>两端的完美前向保护参数（<span lang="EN-US">pfs</span>）是否一致；<span lang="EN-US"><p></p></span></font></span></p><p style="WORD-BREAK: break-all; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">4</font></span><span style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%;"><font face="宋体">．<span lang="EN-US">&nbsp;</span>现象：<span lang="EN-US">IPSec&nbsp;SA</span>已经建立成功，但是两边的局域网中两台主机不通。</font><span lang="EN-US"><br/></span><font face="宋体">可能的原因：（这时候已经与<span lang="EN-US">IPSec</span>本身没有多大关系了）</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>主机上是否已经配置网关，该网关指向路由器的一个接口；</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>检查两台主机上是否启用了防火墙过滤之类的软件；</font><span lang="EN-US"><br/></span><font face="宋体">ü<span lang="EN-US">&nbsp;</span>数据流在<span lang="EN-US">Internet</span>上是否已经穿越了<span lang="EN-US">NAT</span>（基本可以从路由器出口的地址是否为公网地址来确定）<span lang="EN-US"><p></p></span></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><p><font face="Times New Roman" size="3">&nbsp;</font></p></span></p>

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