L2TP over IPSEC穿越NAT配置案例

dis cu

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 version 5.20, Release 5142P03

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 sysname H3C

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 l2tp enable   //使能l2tp

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 undo voice vlan mac-address 00e0-bb00-0000

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 ike local-name lns    、、制定本端ike名字

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 interzone policy default by-priority

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 domain default enable system

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 telnet server enable

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 port-security enable

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session synchronization enable

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 password-recovery enable

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acl number 3005        //配置ipsec感兴趣流量

 rule 0 permit udp source-port eq 1701

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vlan 1

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domain system

 access-limit disable

 state active

 idle-cut disable

 self-service-url disable

 ip pool 1 192.168.10.2 192.168.10.10     //配置l2tp分配的地址池

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pki domain default

  crl check disable

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ike peer pc      、、配置ike对等体，使用野蛮模式，开启nat穿越

 exchange-mode aggressive

 pre-shared-key cipher admin

 id-type name

 remote-name pc

 nat traversal

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ipsec transform-set 1       //配置ipsec安全提议

 encapsulation-mode tunnel

 transform esp

 esp authentication-algorithm sha1

 esp encryption-algorithm des

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ipsec policy-template temp1 1    //配置ipsec策略模板

 security acl 3005

 ike-peer pc

 transform-set 1

 sa duration traffic-based 1843200

 sa duration time-based 3600

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ipsec policy pc 1 isakmp template temp1    //配置ipsec策略

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user-group system

 group-attribute allow-guest

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cwmp

 undo cwmp enable

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l2tp-group 1     //配置l2tp group组

 undo tunnel authentication

 allow l2tp virtual-template 1

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interface Virtual-Template1     //配置虚接口

 ppp authentication-mode chap

 remote address pool 1

 ip address 192.168.10.1 255.255.255.0

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interface NULL0

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interface GigabitEthernet0/0

 port link-mode route

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interface GigabitEthernet0/1

 port link-mode route

 ip address 10.1.1.1 255.255.255.0

 ipsec policy pc         //在与nat互联借口上使能ipsec策略

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interface GigabitEthernet0/2

 port link-mode route

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interface GigabitEthernet0/3

 port link-mode route

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interface GigabitEthernet0/4

 port link-mode route

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vd Root id 1

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zone name Management id 0

 priority 100

 import interface GigabitEthernet0/0

zone name Local id 1

 priority 100

zone name Trust id 2

 priority 85

 import interface GigabitEthernet0/1

 import interface GigabitEthernet0/2

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 ip route-static 0.0.0.0 0.0.0.0 10.1.1.2

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#

 version 5.20, Release 5142P02

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session synchronization enable

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 password-recovery enable

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vlan 1

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domain system

 access-limit disable

 state active

 idle-cut disable

 self-service-url disable

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pki entity sun

  common-name U200-S

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pki domain ca-server

  certificate request from ca

  certificate request entity sun

  crl check disable

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pki domain default

  crl check disable

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dhcp server ip-pool 1

 network 5.5.5.0 mask 255.255.255.0

 gateway-list 5.5.5.1

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user-group system

 group-attribute allow-guest

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local-user admin

 password cipher $c$3$hYJiDtWJEmaHNhFUEekJKVdFCEGvKs02

 authorization-attribute level 3

 service-type telnet

 service-type web

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cwmp

 undo cwmp enable

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interface GigabitEthernet0/0

 port link-mode route

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interface GigabitEthernet0/1

 port link-mode route

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interface GigabitEthernet0/2

 port link-mode route

 ip address 10.1.1.2 255.255.255.0

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interface GigabitEthernet0/3

 port link-mode route

 nat outbound     //公网借口使能nat，并映射udp 1701、500、4500

 nat server 1 protocol udp global current-interface 1701 inside 10.1.1.1 1701

 nat server 2 protocol udp global current-interface 500 inside 10.1.1.1 500

 nat server 3 protocol udp global current-interface 4500 inside 10.1.1.1 4500

 ip address 5.5.5.1 255.255.255.0

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interface GigabitEthernet0/4

 port link-mode route

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vd Root id 1

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zone name Management id 0

 priority 100

 import interface GigabitEthernet0/0

zone name Local id 1

 priority 100

zone name Trust id 2

 priority 85

 import interface GigabitEthernet0/1

 import interface GigabitEthernet0/2

 import interface GigabitEthernet0/3

 import interface GigabitEthernet0/4

 import interface Vlan-interface1

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 ip route-static 0.0.0.0 0.0.0.0 10.1.1.1

#

dis ike sa

    total phase-1 SAs:  1

    connection-id  peer                    flag        phase   doi

  ----------------------------------------------------------------

     18            5.5.5.2                 RD          1       IPSEC

     19            5.5.5.2                 RD          2       IPSEC

dis ipsec sa

===============================

Interface: GigabitEthernet0/1

    path MTU: 1500

===============================

  -----------------------------

  IPsec policy name: "temp1"

  sequence number: 1

  acl version: ACL4

  mode: template

  -----------------------------

    connection id: 9

    encapsulation mode: tunnel

    perfect forward secrecy:

    tunnel:

        local  address: 10.1.1.1

        remote address: 5.5.5.2

    flow:

        sour addr: 10.1.1.1/255.255.255.255  port: 1701  protocol: UDP

        dest addr: 192.168.202.128/255.255.255.255  port: 0  protocol: UDP

    [inbound ESP SAs]

      spi: 1618176710 (0x60736ac6)

      proposal: ESP-ENCRYPT-DES ESP-AUTH-SHA1

      sa duration (kilobytes/sec): 1843200/3600

      sa remaining duration (kilobytes/sec): 1843197/3448

      max sequence number received: 33

      anti-replay check enable: Y

      anti-replay window size: 32

      udp encapsulation used for nat traversal: Y

    [outbound ESP SAs]

      spi: 1926060403 (0x72cd5973)

      proposal: ESP-ENCRYPT-DES ESP-AUTH-SHA1

      sa duration (kilobytes/sec): 1843200/3600

      sa remaining duration (kilobytes/sec): 1843198/3448

      max sequence number sent: 32

      udp encapsulation used for nat traversal: Y

dis l2tp tunnel

 Total tunnel = 1

 LocalTID RemoteTID RemoteAddress    Port   Sessions RemoteName

 1        1         192.168.202.128  1039   1        vpn