hckao@x96:/etc$ sudo cat iptables.rules
# Modified by hwdsl2 VPN script
# Generated by iptables-save v1.6.1 on Fri Aug 23 20:24:52 2019
*mangle
:PREROUTING ACCEPT [91839:61159286]
:INPUT ACCEPT [27955:9498444]
:FORWARD ACCEPT [63871:51660326]
:OUTPUT ACCEPT [42310:49751915]
:POSTROUTING ACCEPT [106181:101412241]
-A FORWARD -o ppp0 -p tcp -m tcp --tcp-flags SYN,RST SYN -m tcpmss --mss 1400:65495 -j TCPMSS --clamp-mss-to-pmtu
COMMIT
# Completed on Fri Aug 23 20:24:52 2019
# Generated by iptables-save v1.6.1 on Fri Aug 23 20:24:52 2019
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -p udp -m udp --dport 1701 -m policy --dir in --pol none -j DROP
-A INPUT -m conntrack --ctstate INVALID -j DROP
-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p udp -m multiport --dports 500,4500 -j ACCEPT
-A INPUT -p udp -m udp --dport 1701 -m policy --dir in --pol ipsec -j ACCEPT
-A INPUT -p udp -m udp --dport 1701 -j DROP
-A INPUT -p udp -m udp --dport 1194 -j ACCEPT
-A FORWARD -m conntrack --ctstate INVALID -j DROP
-A FORWARD -i ppp0 -o ppp+ -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -i ppp+ -o ppp0 -j ACCEPT
-A FORWARD -s 192.168.42.0/24 -d 192.168.42.0/24 -i ppp+ -o ppp+ -j ACCEPT
-A FORWARD -d 192.168.43.0/24 -i ppp0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -s 192.168.43.0/24 -o ppp0 -j ACCEPT
-A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -s 10.8.0.0/24 -j ACCEPT
-A FORWARD -j DROP
COMMIT
# Completed on Fri Aug 23 20:24:52 2019
# Generated by iptables-save v1.6.1 on Fri Aug 23 20:24:52 2019
*nat
:PREROUTING ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
-A POSTROUTING -s 192.168.42.0/24 -o ppp0 -j MASQUERADE
-A POSTROUTING -s 192.168.43.0/24 -o ppp0 -m policy --dir out --pol none -j MASQUERADE
-A POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to-source 220.133.209.15
COMMIT
# Completed on Fri Aug 23 20:24:52 2019
hckao@x96:/etc$