guides/self-hosting/bypass-cgnat/iptables/iptables-up.sh
2023-09-21 23:00:53 -06:00

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#!/bin/sh
VPSINT="INTERFACE"
TCP=$(cat /opt/wireguard/ports-tcp.txt)
: "${tcpports:=$TCP}"
for port in $tcpports; do
iptables -A FORWARD -i "$VPSINT" -o wg0 -p tcp --syn --dport "$port" -m conntrack --ctstate NEW -j ACCEPT
iptables -t nat -A PREROUTING -i "$VPSINT" -p tcp --dport "$port" -j DNAT --to-destination 10.0.0.2
iptables -t nat -A POSTROUTING -o wg0 -p tcp --dport "$port" -d 10.0.0.2 -j SNAT --to-source 10.0.0.1
ufw allow "$port"/tcp
done
UDP=$(cat /opt/wireguard/ports-udp.txt)
: "${udpports:=$UDP}"
for port in $udpports; do
iptables -A FORWARD -i "$VPSINT" -o wg0 -p udp --dport "$port" -m conntrack --ctstate NEW -j ACCEPT
iptables -t nat -A PREROUTING -i "$VPSINT" -p udp --dport "$port" -j DNAT --to-destination 10.0.0.2
iptables -t nat -A POSTROUTING -o wg0 -p udp --dport "$port" -d 10.0.0.2 -j SNAT --to-source 10.0.0.1
ufw allow "$port"/udp
done