Cisco SSL VPN 配置实例

    注意：这里的配置是SSL VPN的隧道模式

    一、网络拓扑图

    二、SSL VPN Server 配置

    软件版本：
    Cisco IOS Software, 7200 Software (C7200-ADVSECURITYK9-M), Version 12.4(9)T1, RELEASE SOFTWARE (fc2)
    VPN 客户端软件：sslclient-win-1.1.2.169.pkg

    1、格式化 disk0

    R1#format disk0:
    Format operation may take a while. Continue? [confirm]
    Format operation will destroy all data in "disk0:".    Continue? [confirm]
    Format: Drive communication & 1st Sector Write OK...
    Writing Monlib sectors.
    ..............................................................................................................................................
    Monlib write complete

    Format: All system sectors written. OK...

    Format: Total sectors in formatted partition: 8009
    Format: Total bytes in formatted partition: 4100608
    Format: Operation completed successfully.

    Format of disk0 complete

    2、上传软件

    R1#copy tftp disk0:
    Address or name of remote host []? 192.168.10.100
    Source filename []? sslclient-win-1.1.2.169.pkg
    Destination filename [sslclient-win-1.1.2.169.pkg]?
    Accessing tftp://192.168.10.100/sslclient-win-1.1.2.169.pkg...
    Loading sslclient-win-1.1.2.169.pkg from 192.168.10.100 (via FastEthernet0/0): !!
    [OK - 415090 bytes]

    415090 bytes copied in 12.892 secs (32197 bytes/sec)

    3、安装 client 软件

    R1(config)#webvpn install svc disk0:/sslclient-win-1.1.2.169.pkg
    SSLVPN Package SSL-VPN-Client : installed successfully

    4、配置 SSL VPN

    R1(config)# aaa new-model
    R1(config)# aaa authentication login default local   //为防止控制台超时而造成无法进入Exec
    R1(config))# aaa authentication login webvpn local
    R1(config)# ip local pool ssl-add 11.1.1.10 11.1.1.20
    R1(config)# username user1 password 123   //定义WebVPN本地认证用户名,密码
    R1(config))# webvpn gateway vpngateway //定义WebVPN在哪个接口上进行监听，此时IOS会自动产生自签名证书。
    R1 (config-webvpn-gateway)# ip address 192.168.10.10 port 443
    R1 (config-webvpn-gateway)# inservice  //启用webvpn gateway配置
    R1 (config)# webvpn context webcontext   //定义webvpn的相关配置，相当于ASA的tunnel-group，在这里可以定义
    R1 (config-webvpn-context)# gateway vpngateway //将context和gateway相关联
    R1 (config-webvpn-context)# aaa authentication list webvpn
    R1 (config-webvpn-context)# inservice //启用webvpn context配置
    R1(config-webvpn-context)# policy group sslvpn-policy //进入sslvpn策略组
    R1(config-webvpn-group)# functions svc-enabled
    R1(config-webvpn-group)# svc address-pool ssl-add //分配svc使用的地址池
    R1(config-webvpn-group)# svc split include 192.168.20.0 255.255.255.0 //定义隧道分离的目标地址，如果不配置，则默认为0.0.0.0
    R1(config-webvpn-group)#exit
    R1(config-webvpn-context)# default-group-policy sslvpn-policy  //当配置了多个policy group后,默认使用的策略组

    注意:

    在IOS中，如果地址池不和内网在一个段，则需创建一个和地址池在同一网段的loopback接口作为vpn客户端的网关。
    还可以在context中指定virtual-host，类似于iis中的文件头，允许多个主机映射到同一个IP地址
    同时context中还可以设置web登陆框的样式，比如logo，title等

    5、完整配置

    R1#show running-config
    Building configuration...

    Current configuration : 3223 bytes
    !
    version 12.4
    service timestamps debug datetime msec
    service timestamps log datetime msec
    no service password-encryption
    !
    hostname R1
    !
    boot-start-marker
    boot-end-marker
    !
    !
    aaa new-model
    !
    !
    aaa authentication login default local
    aaa authentication login webvpn local
    !
    aaa session-id common
    !
    resource policy
    !
    ip cef
    !
    !
    !
    crypto pki trustpoint TP-self-signed-4294967295
     enrollment selfsigned
     subject-name cn=IOS-Self-Signed-Certificate-4294967295
     revocation-check none
     rsakeypair TP-self-signed-4294967295
    !
    !
    crypto pki certificate chain TP-self-signed-4294967295
     certificate self-signed 01
        3082023A 308201A3 A0030201 02020101 300D0609 2A864886 F70D0101 04050030
        31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274
        69666963 6174652D 34323934 39363732 3935301E 170D3038 31323135 31393039
        30335A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649
        4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D34 32393439
        36373239 3530819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281
      8100C6F2 B499879D 1CEB3638 BA59B459 A72167BB FDD2CD73 3E3E6FB6
    D1347E43
      8CC21C65 BAC01E28 50013497 71CF8062 C54F254C A6DB2D5A CDDB864D
    CFF71A50
      F3C20566 1405E49B 18CE2DAB 469C58E8 5B4A1FD6 59DCBCA5 12A34543
    4F6842B6
      24B9A7BD CE36E98A A5463EB3 2D2C5BC0 FAA247C1 E44DB455 4537465F
    18895A14
        66D10203 010001A3 62306030 0F060355 1D130101 FF040530 030101FF 300D0603
        551D1104 06300482 02523130 1F060355 1D230418 30168014 9F7F1B46 F6903BC5
      803F4AD7 2433EBD0 5813E29D 301D0603 551D0E04 1604149F 7F1B46F6
    903BC580
      3F4AD724 33EBD058 13E29D30 0D06092A 864886F7 0D010104 05000381
    81002516
      3F75E2AA 33544113 9A9179DB DFED2529 DF5A972F C2BFDE0E 0279D1F5
    8D30CAC7
      59BE79C6 85825281 AB2D0B08 2CA84D01 85A4DB19 8977BC82 9E59F764
    ADE75E22
      9A7FF37A 9D83819A 2287BE75 773FAA32 D38DD3C2 2C0DF23F 7D45D7A3
    E8006C1A
      6B9E0540 12483241 6EEAA0FF B31240F3 94044BCB 75210037 FEF5AD15 F49B
      quit
    username user1 password 0 123
    !
    !
    !
    !
    !
    !
    interface Loopback0
      ip address 11.1.1.1 255.255.255.0
    !
    interface FastEthernet0/0
      ip address 192.168.10.10 255.255.255.0
     duplex half
    !
    interface Serial1/0
      ip address 10.1.1.1 255.255.255.0
      serial restart-delay 0
    !
    interface Serial1/1
      no ip address
     shutdown
      serial restart-delay 0
    !
    interface Serial1/2
      no ip address
     shutdown
      serial restart-delay 0
    !
    interface Serial1/3
      no ip address
     shutdown
      serial restart-delay 0
    !
    router rip
     version 2
     network 10.0.0.0
    network 11.0.0.0
     network 192.168.10.0
     no auto-summary
    !
    ip local pool ssl-add 11.1.1.10 11.1.1.20
    no ip http server
    no ip http secure-server
    !
    !
    !
    logging alarm informational
    !
    !
    !
    !
    !
    control-plane
    !
    !
    line con 0
      exec-timeout 0 0
     stopbits 1
    line aux 0
     stopbits 1
    line vty 0 4
    !
    !
    webvpn gateway vpngateway
      ip address 192.168.10.10 port 443
     ssl trustpoint TP-self-signed-4294967295
     inservice
     !
    webvpn install svc disk0:/webvpn/svc.pkg
     !
    webvpn context webcontext
      ssl authenticate verify all
     !
     !
      policy group sslvpn-policy
       functions svc-enabled
       svc address-pool "ssl-add"
       svc split include 192.168.20.0 255.255.255.0
      default-group-policy sslvpn-policy
      aaa authentication list webvpn
      gateway vpngateway domain sshvpn
      inservice
    !
    !
    end

    R2#show running-config
    Building configuration...

    Current configuration : 973 bytes
    !
    version 12.4
    service timestamps debug datetime msec
    service timestamps log datetime msec
    no service password-encryption
    !
    hostname R2
    !
    boot-start-marker
    boot-end-marker
    !
    !
    no aaa new-model
    !
    resource policy
    !
    ip cef
    !
    !
    !
    !
    !
    !
    interface Loopback1
      ip address 22.1.1.1 255.255.255.0
    !
    interface FastEthernet0/0
      ip address 192.168.20.10 255.255.255.0
     duplex half
    !
    interface Serial1/0
      ip address 10.1.1.2 255.255.255.252
      serial restart-delay 0
    !
    interface Serial1/1
      no ip address
     shutdown
      serial restart-delay 0
    !
    interface Serial1/2
      no ip address
     shutdown
      serial restart-delay 0
    !
    interface Serial1/3
      no ip address
     shutdown
      serial restart-delay 0
    !
    router rip
     version 2
     network 10.0.0.0
     network 22.0.0.0
     network 192.168.20.0
     no auto-summary
    !
    no ip http server
    no ip http secure-server
    !
    !
    !
    logging alarm informational
    !
    !
    !
    !
    !
    control-plane
    !
    !
    line con 0
      exec-timeout 0 0
     stopbits 1
    line aux 0
     stopbits 1
    line vty 0 4
    !
    !
    end

    三、客户端配置

    在浏览器中输入https://192.168.10.10/ 访问WebVPN，这时会弹出提示信息，点击“确定”

    需要安装证书，点击“是”，这里第一个感叹号是因为这个证书只路由器自签发的，没有经过验证，而第二个感叹号是因为配置WebVPN时应该注意证书颁发后的证书的有效期，往往颁发证书时的有有效期限时间会比当前时间晚一二天

    这时会弹出网页，输入用户和密码，点击 login

    这时会自动安装 SSL VPN Client 软件

    需要点击允许安装 ACTIVE 控件，会弹出安装界面，点击安装

    正在进行 SSL VPN Client

    点击安装证书

    安装证书之后，这样 VPN连接就建立起来，在屏幕的右下部会显示出黄色的小钥匙的标志

    四、验证配置

     在客户端上可以查看 VPN的状态。

    可以查看 VPN隧道的分离子网。

    使用ipconfig命令可以查看到获得的地址。

    查看路由表，可以看到一条指向192.168.20.0的路由条目