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#!/bin/sh
# From: https://github.com/angristan/wireguard-install
SERVER_WG_NIC="wg0" #Default interface
SERVER_PUB_NIC=$(ip -4 route ls | grep default | grep -Po '(?<=dev )(\S+)' | head -1)
SERVER_PORT=$(grep -Po '(?<=ListenPort = )(\S+)' "/etc/wireguard/$SERVER_WG_NIC.conf")
if [ "$1" = "up" ]; then
iptables -I INPUT -p udp --dport "$SERVER_PORT" -j ACCEPT
iptables -I FORWARD -i "$SERVER_PUB_NIC" -o $SERVER_WG_NIC -j ACCEPT
iptables -I FORWARD -i $SERVER_WG_NIC -j ACCEPT
iptables -t nat -A POSTROUTING -o "$SERVER_PUB_NIC" -j MASQUERADE
ip6tables -I FORWARD -i $SERVER_WG_NIC -j ACCEPT
ip6tables -t nat -A POSTROUTING -o "$SERVER_PUB_NIC" -j MASQUERADE
#Client isolation on
#iptables -I FORWARD -i $SERVER_WG_NIC -o $SERVER_WG_NIC -j REJECT --reject-with icmp-admin-prohibited
#ip6tables -I FORWARD -i $SERVER_WG_NIC -o $SERVER_WG_NIC -j REJECT --reject-with icmp6-adm-prohibited
fi
if [ "$1" = "down" ]; then
iptables -D INPUT -p udp --dport "$SERVER_PORT" -j ACCEPT
iptables -D FORWARD -i "$SERVER_PUB_NIC" -o $SERVER_WG_NIC -j ACCEPT
iptables -D FORWARD -i $SERVER_WG_NIC -j ACCEPT
iptables -t nat -D POSTROUTING -o "$SERVER_PUB_NIC" -j MASQUERADE
ip6tables -D FORWARD -i $SERVER_WG_NIC -j ACCEPT
ip6tables -t nat -D POSTROUTING -o "$SERVER_PUB_NIC" -j MASQUERADE
#Client isolation rules delete
#iptables -D FORWARD -i $SERVER_WG_NIC -o $SERVER_WG_NIC -j REJECT --reject-with icmp-admin-prohibited
#ip6tables -I FORWARD -i $SERVER_WG_NIC -o $SERVER_WG_NIC -j REJECT --reject-with icmp6-adm-prohibited
fi
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