coderofsalvation/iptables-proxy-forward-and-ratelimit-ports.md

Last active April 3, 2023 14:04

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using iptables to redirect low ports to high ports with rootless podman docker containers

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iptables-proxy-forward-and-ratelimit-ports.md

IPTABLES

server $ cat proxy

proxyport(){
  iptables -t nat -A PREROUTING -p tcp --dport $1 -j REDIRECT --to-port $2
  iptables -t nat -I OUTPUT -p tcp -d $(curl -s https://checkip.amazonaws.com) --dport $1 -j REDIRECT --to-port $2 # reverse ip
}

server $ source proxy
server $ proxyport 80 8080
server $ proxyport 81 8181
server $ proxyport 443 4443

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