centos7安装l2tp可以使用github项目进行安装，安装成功之后需要根据自己的实际情况调整ipsec.conf ppp 以及xl2tp.conf
安装完成后需要使用ipsec verify验证是否正常连接
Version check and ipsec on-path [OK]
Libreswan 3.15 (netkey) on 3.10.0-229.el7.x86_64
Checking for IPsec support in kernel [OK]
NETKEY: Testing XFRM related proc values
ICMP default/send_redirects [OK]
ICMP default/accept_redirects [OK]
XFRM larval drop [OK]
Pluto ipsec.conf syntax [OK]
Hardware random device [N/A]
Two or more interfaces found, checking IP forwarding [OK]
Checking rp_filter [OK]
Checking that pluto is running [OK]
Pluto listening for IKE on udp 500 [OK]
Pluto listening for IKE/NAT-T on udp 4500 [OK]
Pluto ipsec.secret syntax [OK]
Checking ‘ip’ command [OK]
Checking ‘iptables’ command [OK]
Checking ‘prelink’ command does not interfere with FIPSChecking for obsolete ipsec.conf options [OK]
Opportunistic Encryption [DISABLED]
转载请注明来源链接 http://just4fun.im/2016/09/30/sbkefu/ 尊重知识,谢谢:)