Checking your system to see if IPsec got installed and started correctly:
Version check and ipsec on-path [OK]
Linux Openswan U2.6.33/K3.0.18-x86_64-linode24 (netkey)
Checking for IPsec support in kernel [OK]
SAref kernel support [N/A]
NETKEY: Testing XFRM related proc values [OK]
[OK]
[OK]
Checking that pluto is running [OK]
Pluto listening for IKE on udp 500 [OK]
Pluto listening for NAT-T on udp 4500 [OK]
Two or more interfaces found, checking IP forwarding [OK]
Checking NAT and MASQUERADEing
Checking for 'ip' command [OK]
Checking /bin/sh is not /bin/dash [OK]
Checking for 'iptables' command [OK]
Opportunistic Encryption Support [DISABLED]
这样的状态就是正常的了、已经通过了验证
==========================================
如果迩发现这行是WARNING的话
Checking /bin/sh is not /bin/dash [WARNING]
因为ubtuntu和debian系统已经使用dash来代替bash脚本执行器、虽然dash更快更方便、但在某些脚本兼容性上还是不太稳定、莪们可以将ubuntu默认的脚本执行方式改回bash来执行、执行以下命令
sudo dpkg-reconfigure dash
按英文提示、选择no、就可以把dash切换成bash、再执行ipsec verify就不会出现WARNING的提示了
=========================================
Pluto listening for IKE on udp 500 [FAILED]
Cannot execute command "lsof -i UDP:500": No such file or directory
Pluto listening for NAT-T on udp 4500 [FAILED]
Cannot execute command "lsof -i UDP:4500": No such file or directory
如果出现以上的问题、就是没安装lsof的命令啦、安装就可以了
apt-get install lsof