Antony Stone (Antony@xxxxxxxxxxxxxxxxxxxx) wrote: > > If it is not true that the real source IP and the real destination IP exist on > the same interface of the netfilter machine, repost your query with a bit > more detail and we may be able to help futher. > The situation is that I have a hostname where there are both SMTP and DNS services atm. The mail service is beeing migrated to another host, and since I can't just change the IP for the hostname (would break DNS services) I would like to have a temporary redirect to the new mailservice for the SMTP-service, until the ppl using it has changed their mail settings to use the new hostname. So, I have two external host with two external IP's. They exists on the same subnet too. Both uses the same gateway. These are the rules I tried to use, which translates the users IP to the first servers IP: iptables -t nat -A PREROUTING -p tcp --dport 33 -i eth0 -j DNAT --to host2:44 iptables -t nat -A POSTROUTING -d host2 -p tcp --dport 25 -j SNAT --to host1 Hope that's enough information to get you into my problem! Thanks for letting me take your time! :)
