阿里云配置vpn

wget --no-check-certificate https://raw.githubusercontent.com/teddysun/across/master/l2tp.sh
chmod +x l2tp.sh
./l2tp.sh


# Added by L2TP VPN script
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp --dport 22 -j ACCEPT
-A INPUT -p udp -m multiport --dports 500,4500,1701 -j ACCEPT
-A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -s 192.168.18.0/24  -j ACCEPT
COMMIT
*nat
:PREROUTING ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
-A POSTROUTING -s 192.168.18.0/24 -o eth0 -j MASQUERADE(主要在防火墙上加上这句)
-A POSTROUTING -s 192.168.18.0/24 -j SNAT --to-source 47.104.11.40
COMMIT