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如何终止与 Linux 的 Cisco 虚拟隧道接口？

tag-icon • tag-icon linux vpn cisco
如何终止与 Linux 的 Cisco 虚拟隧道接口？

我正在尝试用 GNU Debian/Linux 路由器替换 Cisco 路由器。此 Cisco 路由器终止使用 VTI 设置的 VPN 连接。有人能帮我在 Debian 上使用什么软件和配置吗？

这是 Cisco 路由器上工作配置的摘要。我用尖括号中的文本替换了一些合理的部分。我无法控制 IPSEC 隧道的另一端：

crypto pki trustpoint TP-self-signed-<keyid>
 enrollment selfsigned
 subject-name cn=IOS-Self-Signed-Certificate-<keyid>
 revocation-check none
 rsakeypair TP-self-signed-<keyid>
!
no ip subnet-zero
no ip source-route
ip auth-proxy max-nodata-conns 3
ip admission source-interface Vlan1
ip admission max-nodata-conns 3
!
!
crypto isakmp policy 1
 encr 3des
 authentication pre-share
 group 2
crypto isakmp key <password> address <remote public IP>
!
crypto ipsec transform-set <xform name> esp-3des esp-sha-hmac
!
crypto ipsec profile <profile name>
 set transform-set <xform name>
!
interface Tunnel98
 ip address <local private tunnel IP> 255.255.255.252
 no ip redirects
 ip mtu 1400
 ip tcp adjust-mss 1360
 tunnel source Dialer1
 tunnel destination <remote public IP>
 tunnel mode ipsec ipv4
 tunnel protection ipsec profile <profile name>
!
interface Vlan1
 ip address <local private IP> 255.255.255.0
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip nat inside
 ip virtual-reassembly
!
interface Dialer1
 ip address negotiated
 ip access-group to-internet out
 ip mtu 1492
 ip nat outside
 ip virtual-reassembly
 encapsulation ppp
 dialer pool 1
 dialer-group 1
 no cdp enable
 ppp authentication pap callin
 ppp pap sent-username <ppp username> password 7 <ppp password>
 ppp ipcp dns request
 ppp ipcp route default
!
no ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer1
ip route 10.<remote private subnet 1>.0.0 255.255.0.0 <remote private tunnel IP> name <remote net 1 description>
ip route 10.<remote private subnet 2>.0.0 255.255.0.0 <remote private tunnel IP> name <remote net 2 description>
!
ip nat inside source list natacl interface Dialer1 overload
!
ip access-list standard natacl
 permit <local private net> 0.0.0.255
!
ip access-list extended to-internet
 deny   ip any 10.0.0.0 0.255.255.255
 deny   ip any 172.16.0.0 0.15.255.255
 deny   ip any 192.168.0.0 0.0.255.255
 permit ip any any
!
dialer-list 1 protocol ip permit
no cdp run

提前感谢您的见解！

答案1

VTI 支持刚刚添加到 Linux。3.6 内核

https://kernelnewbies.org/Linux_3.6#Networking

答案2

要终止 IPsec VPN，您可能需要查看 Openswan 或 strongSwan。

Openswan wiki 上有关于与 Cisco 互操作性的条目：

  • http://wiki.openswan.org/index.php/Interop/InteroperatingCisco

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