PIX 6.x ：在静态寻址IOS路由器和动态地寻址的带有NAT的PIX防火墙之间的动态IPSec配置示例

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1 PIX 6.x : 在静态寻址 IOS 路由器和动态地寻址的带有 NAT 的 PIX 防火墙之间的动态 IPSec 配置示例 Contents Introduction Prerequisites Requirements Components Used Conventions Configure Network Diagram 配置 Verify Troubleshoot 故障排除命令 Related Information Introduction 本文提供如何显示您 enable (event) 接受从 PIX 防火墙的动态 IPSec 连接的 IOS 路由器的一配置示例如果专用网络 x 访问 Internet, 则远程路由器会执行网络地址转换 (NAT) NAT 进程中不包括从 x 到 PIX 之后专用网络 x 的数据流 PIX 防火墙可以发起与路由器的连接, 但路由器无法发起与 PIX 的连接此配置使用 Cisco IOS 路由器以创建与 PIX 防火墙之间的动态 IPsec LAN 到 LAN (L2L) 隧道, 这些隧道在其公共接口 ( 外部接口 ) 上接收动态 IP 地址动态主机配置协议 (DHCP) 提供一种从 Internet 服务提供商 (ISP) 动态分配 IP 地址的机制这样, 当主机不再需要这些 IP 地址时, 就可以重用它们要了解有关 Cisco PIX 安全设备运行软件版本 6.x 的相同方案的详细信息, 请参阅 PIX 6.x: 使用 NAT 在静态寻址的 PIX 防火墙和动态寻址的 IOS 路由器之间配置动态 IPsec 的配置示例, 以获取有关 PIX 接受来自路由器的动态 IPsec 连接的方案的详细信息有关详细信息, 请参阅 PIX/ASA 7.x 及更高版本 : 使用 NAT 在静态寻址的 PIX 和动态寻址的 IOS 路由器之间配置动态 IPsec 的配置示例, 以使 PIX/ASA 安全设备可以接受来自 IOS 路由器的动态 IPsec 连接有关详细信息, 请参阅 PIX/ASA 7.x 及更高版本 : 使用 NAT 在静态寻址的 IOS 路由器和动态寻址的 PIX 之间配置动态 IPsec 的配置示例, 以了解有关 PIX/ASA 安全设备运行软件版本 7.x 及更高版本的同一方案的详细信息 Prerequisites

Requirements There are no specific requirements for this document. Components Used 本文档中的信息基于以下软件和硬件版本 : Cisco IOS 软件版本 12.4 Cisco PIX 防火墙软件 6.3.

2 Requirements There are no specific requirements for this document. Components Used 本文档中的信息基于以下软件和硬件版本 : Cisco IOS 软件版本 12.4 Cisco PIX 防火墙软件版 Cisco Secure PIX 防火墙 515E Cisco 2811 路由器 The information in this document was created from the devices in a specific lab environment.all of the devices used in this document started with a cleared (default) configuration.if your network is live, make sure that you understand the potential impact of any command. Conventions Refer to Cisco Technical Tips Conventions for more information on document conventions. Configure 本部分提供有关如何配置本文档所述功能的信息 Note: 有关本文档所用命令的详细信息, 请使用命令查找工具 ( 仅限注册用户 ) Network Diagram 本文档使用以下网络设置 : 配置本文档使用以下配置 : PIX 515E R2(Cisco 2811 路由器 )

3 PIX 515E PIX Version 6.3(4) interface ethernet0 100full interface ethernet1 100full interface ethernet2 shut nameif ethernet0 outside security0 nameif ethernet1 inside security100 nameif ethernet2 intf2 security4 enable password 8Ry2YjIyt7RRXU24 encrypted passwd 2KFQnbNIdI.2KYOU encrypted hostname PIX515E fixup protocol dns maximum-length 512 fixup protocol ftp 21 fixup protocol h323 h fixup protocol h323 ras fixup protocol http 80 fixup protocol rsh 514 fixup protocol rtsp 554 fixup protocol sip 5060 fixup protocol sip udp 5060 fixup protocol skinny 2000 fixup protocol smtp 25 fixup protocol sqlnet 1521 fixup protocol tftp 69 names --- The access control list (ACL) to avoid NAT on the IPsec packets. access-list NO-NAT permit ip The ACL to apply on crypto map. --- Include the private-network-to-private-network traffic --- in the encryption process. access-list 101 permit ip pager lines 24 logging on mtu outside 1500 mtu inside 1500 mtu intf ISP will providthe the Outside IP address. ip address outside dhcp ip address inside ip audit info action alarm ip audit attack action alarm no failover failover timeout 0:00:00 failover poll 15 no failover ip address outside no failover ip address inside no failover ip address intf2 pdm history enable arp timeout global (outside) 1 interface nat (inside) 0 access-list NO-NAT nat (inside) route outside timeout xlate 3:00:00 timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00 timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00 timeout uauth 0:05:00 absolute

4 aaa-server TACACS+ protocol tacacs+ aaa-server TACACS+ max-failed-attempts 3 aaa-server TACACS+ deadtime 10 aaa-server RADIUS protocol radius aaa-server RADIUS max-failed-attempts 3 aaa-server RADIUS deadtime 10 aaa-server LOCAL protocol local no snmp-server location no snmp-server contact snmp-server community public no snmp-server enable traps floodguard enable sysopt connection permit-ipsec --- IPsec configuration, Phase 2. crypto ipsec transform-set DYN-TS esp-des esp-md5-hmac crypto map IPSEC 10 ipsec-isakmp crypto map IPSEC 10 match address 101 crypto map IPSEC 10 set peer crypto map IPSEC 10 set transform-set DYN-TS crypto map IPSEC interface outside --- Internet Security Association and Key Management Protocol (ISAKMP) --- policy, Phase Note: In real show run output, the pre-shared key appears as *******. isakmp enable outside isakmp key cisco123 address netmask isakmp policy 10 authentication pre-share isakmp policy 10 encryption des isakmp policy 10 hash md5 isakmp policy 10 group 1 isakmp policy 10 lifetime telnet timeout 5 ssh timeout 5 console timeout 0 terminal width 80 Cryptochecksum:f e214a947fc2e03f173e4a405 : end R2(Cisco 2811 路由器 ) R2#show running-configuration Building configuration... Current configuration : 1916 bytes version 12.4 service timestamps debug datetime msec service timestamps log datetime msec service password-encryption hostname r1800 boot-start-marker boot-end-marker no aaa new-model resource policy

5 mmi polling-interval 60 no mmi auto-configure no mmi pvc mmi snmp-timeout 180 ip subnet-zero ip cef no ip dhcp use vrf connected no ip ips deny-action ips-interface no ftp-server write-enable --- ISAKMP policy, Phase 1. crypto isakmp policy 10 hash md5 authentication pre-share crypto isakmp key 6 cisco123 address IPsec policy, Phase 2. crypto ipsec transform-set DYN-TS esp-des esp-md5-hmac crypto dynamic-map DYN 10 set transform-set DYN-TS match address 101 crypto map IPSEC 10 ipsec-isakmp dynamic DYN interface FastEthernet0/0 ip address ip nat outside ip virtual-reassembly load-interval 30 duplex auto speed auto crypto map IPSEC interface FastEthernet0/1 ip address ip nat inside ip virtual-reassembly duplex auto speed auto ip classless ip route ip http server no ip http secure-server --- Except the private network from the NAT process. ip nat inside source list 102 interface FastEthernet0/0 overload --- Include the private-network-to-private-network --- traffic in the encryption process. access-list 101 permit ip

6 --- Except the private network from the NAT process. access-list 102 deny ip access-list 102 permit ip any control-plane line con 0 exec-timeout 0 0 line aux 0 line vty 0 4 exec-timeout 0 0 login end Verify Use this section to confirm that your configuration works properly. 命令输出解释程序 ( 仅限注册用户 )(OIT) 支持某些 show 命令使用 OIT 可查看对 show 命令输出的分析 show crypto isakmp sa 显示对等体上的所有当前 IKE 安全关联 (SA) show crypto ipsec sa - 显示当前 (IPsec) SA 所采用的设置 show crypto engine connections active - 显示有关加密和解密数据包 ( 仅限路由器 ) 的当前连接和信息必须在两个对等体上都清除 SA 在配置模式下执行以下 PIX 命令 clear crypto isakmp sa 清除第 1 阶段 SA clear crypto ipsec sa - 清除第 2 阶段的 SA 在启用模式下执行以下路由器命令 clear crypto isakmp - 清除第 1 阶段的 SA clear crypto sa - 清除第 2 阶段的 SA Troubleshoot 使用本部分可排除配置故障故障排除命令命令输出解释程序 ( 仅限注册用户 )(OIT) 支持某些 show 命令使用 OIT 可查看对 show 命令输出的分析 Note: 使用 debug 命令之前, 请参阅有关 Debug 命令的重要信息 show crypto isakmp sa - 查看对等体上当前的所有 IKE SA

7 show crypto ipsec sa - 显示当前 (IPsec) SA 所采用的设置 show crypto engine connections active - 显示有关加密和解密数据包 ( 仅限路由器 ) 的当前连接和信息 Related Information 最常用的 L2L 和远程访问 IPSec VPN 故障排除解决方案 Cisco PIX 防火墙软件 Cisco Secure PIX 防火墙命令参考请求注解 (RFC) IPsec 协商 /IKE 协议

ch08.PDF

ch08.PDF 8-1 CCNA 8.1 CLI 8.1.1 8-2 8-3 8.1.21600 2500 1600 2500 / IOS 8-4 8.2 8.2.1 A 5 IP CLI 1600 2500 8-5 8.1.2-15 Windows 9598NT 2000 HyperTerminal Hilgraeve Microsoft Cisco HyperTerminal Private Edition (PE)