Bash Script

Tag: iptables

  • Nat with iptables

    Example of nat in iptables.

    YourIP=1.2.3.4
    YourPort=80
    TargetIP=2.3.4.5
    TargetPort=22

    iptables -t nat -A PREROUTING --dst $YourIP -p tcp --dport $YourPort -j DNAT \
    --to-destination $TargetIP:$TargetPort
    iptables -t nat -A POSTROUTING -p tcp --dst $TargetIP --dport $TargetPort -j SNAT \
    --to-source $YourIP
    iptables -t nat -A OUTPUT --dst $YourIP -p tcp --dport $YourPort -j DNAT \
    --to-destination $TargetIP:$TargetPort