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一.思科防火墙的NAT 一种有四种，静态NAT 将一个内网服务器映射为外网的一个地址，外网通过外网的地址访问服务器实现安全，当然必须要做acl 允许低安全级别访问高安全级别动态NAT 一般是一组对一组，一个网段对应一个外网地址段 &nb...

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一、NAT简介： NAT（Network Address Translation）网络地址转换。最早出现在思科11.2 IOS中，定义在RFC1631和RFC3022中。 NAT最主要的作用是为了缓解IPv4地址空间的不足。同时也带来了一些问题，如每个数据包到达路由器后都要进行包头...

思科华为静态NAT 动态NAT PAT技术

思科拓扑图：首先给主机配上ip地址，然后在交换机上分vlan Switch>en Switch#conf t Switch(config)#inter vlan 1 Switch(config-if)#ip ad Switch(config-if)#ip address 192.168.0...

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