The following link has a solution for a similar scenario "By using iptables and its masquerade feature, it is possible to forward all traffic to the old server to the new IP": http://www.debuntu.org/how-to-redirecting-network-traffic-a-new-ip-using-iptables Chiara Simoni wrote, On 10/18/2012 02:39 PM:
Hi, I need to redirect all requests to my server "Xserver:Xport", to server "Yserver:Yport". For some months I've been using these iptables commands, with Destination NAT and Source NAT on server "Xserver": /sbin/iptables -t nat -A PREROUTING -p tcp -d "$Xserver" --dport "$Xport" -j DNAT --to-destination "$Yserver:$Yport" /sbin/iptables -t nat -A POSTROUTING -p tcp -d "$Yserver" --dport "$Yport" -j SNAT --to-source "$Xserver" Now, these same commands don't work any more, and I don't now why. Recently the only changes I made on my servers is a reboot. Can you help me? Have I made some mistakes on these commands? Thanks Ch.
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