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aleskxyz/iptables-forward-port.sh

Created December 22, 2023 10:42
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  1. aleskxyz created this gist Dec 22, 2023.
    10 changes: 10 additions & 0 deletions iptables-forward-port.sh
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    # This snippet is an example of how we can forward port 80 and 443 from a local server to a remote server
    # These commands are working on Debian and Ubuntu

    echo net.ipv4.ip_forward=1 > /etc/sysctl.d/99-ipforward.conf
    sysctl -p
    apt install iptables-persistent
    iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination <remote-server-ip>:80
    iptables -t nat -A PREROUTING -p tcp --dport 443 -j DNAT --to-destination <remote-server-ip>:443
    iptables -t nat -A POSTROUTING -j MASQUERADE
    iptables-save > /etc/iptables/rules.v4