I have a rather easy question , I hope ! I'm trying to make a local connection attempt (specific port) to be redirected to (local computer, different port) When configuring my gateway (another case and another computer) I can use iptables -t nat -I PREROUTING -s $IP -d $IP2 -p tcp -m tcp --dport 3434 -j --to-destination $IP3:$PORT that works perfectly, but it's not working now.. I guess it's because it's a local connection (!?) as opposed to nat ,as it is in the gateway configuration. What am I missing ? I want 192.168.0.8:25 to be redirected to localhost:2525 basically.. (but only locally)