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ndunks/iptables-port-forwarding.sh

Created July 24, 2023 02:30
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iptables-port-forwarding.sh
# filter
iptables -A FORWARD -d 10.19.49.19/32 -j ACCEPT
iptables -A INPUT -p tcp -m tcp --dport 8443 -j ACCEPT
iptables -A INPUT -p tcp -m tcp --dport 8880 -j ACCEPT
# nat
iptables -t nat -A PREROUTING -i eth0 -p tcp -m tcp --dport 8443 -j DNAT --to-destination 10.19.49.19:1234
iptables -t nat -A POSTROUTING -d 10.19.49.19/32 -o wg0 -p tcp -m tcp --dport 1234 -j SNAT --to-source 10.19.49.1
iptables -t nat -A PREROUTING -i eth0 -p tcp -m tcp --dport 8880 -j DNAT --to-destination 10.19.49.19:8880
iptables -t nat -A POSTROUTING -d 10.19.49.19/32 -o wg0 -p tcp -m tcp --dport 8880 -j SNAT --to-source 10.19.49.1
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