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icarrr/port-forwarding.sh

Created March 26, 2021 01:22
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Forward port from private network to public port
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port-forwarding.sh
#!/bin/bash
# sudo iptables -t nat -I POSTROUTING -m comment --comment "NAT the src ip" -d 192.168.42.12 -o ppp0 -j MASQUERADE
sudo iptables -t nat -I POSTROUTING -m comment --comment "NAT the src ip" -d 192.168.42.12 -j MASQUERADE
sudo iptables -I FORWARD -d 192.168.42.12 -m comment --comment "Accept to forward winbox mikrotik traffic" -m tcp -p tcp --dport 800 -j ACCEPT
sudo iptables -I FORWARD -m comment --comment "Accept to forward winbox mikrotik return traffic" -s 192.168.42.12 -m tcp -p tcp --sport 800 -j ACCEPT
sudo iptables -t nat -I PREROUTING -m tcp -p tcp --dport 1001 -m comment --comment "redirect pkts to virtual machine" -j DNAT --to-destination 192.168.42.12:800
echo "Done"
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