iptables routes port 80 to 4000

iptables_route_ports.md

iptables port routing from 80 to 4000

Configuration

Route via iptables

$ iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 4000

Make it persistent (on Debian, Ubuntu)

apt-get install iptables-persistent

Ressources

• https://stackoverflow.com/questions/24462505/go-sudo-and-apache-port-80
• https://www.thomas-krenn.com/en/wiki/Saving_Iptables_Firewall_Rules_Permanently