阿里云L2TP连接后无网络解决方法

admin

1.修改服务器内核参数，服务器配置文件/etc/sysctl.conf修改或者添加内容如下

1. net.ipv4.ip_forward = 1
   
2. net.ipv4.conf.default.rp_filter = 0
   " _0 F" w4 z1 P& U: W9 m5 x
3. net.ipv4.conf.all.rp_filter = 0
   
4. net.ipv4.conf.all.send_redirects = 0
   9 x$ Q& L' y! ]- a+ c4 H! D
5. net.ipv4.conf.default.send_redirects = 0
   
6. net.ipv4.conf.all.accept_redirects = 0
   
7. net.ipv4.conf.default.accept_redirects = 0
   / j$ c# v% g6 k/ g) }4 e
8. net.core.xfrm_larval_drop = 1

复制代码

0 u! G+ U# m2 x: A2.防火墙添加规则

1. iptables -t nat -A POSTROUTING ! -s 127.0.0.1/8 -j MASQUERADE
   
2. iptables -I FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu

复制代码