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Old 01-13-2005, 04:13 PM   #1
KevinB
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IPtables Forward 1 Port to another on the same IP


I'm 95% sure this can be done with IP tables.

I'd like to forward all requests at port 80 to a server that's actually listening at port 5580. How could I do this?

Thanks,
Kevin
 
Old 01-13-2005, 11:17 PM   #2
Demonbane
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If its on the same server:
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 5580

otherwise:
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT --to <server>:5580

If there are http requests which come from the same LAN as the server than you need to do SNAT in addition to DNAT.
 
Old 01-13-2005, 11:56 PM   #3
KevinB
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Thanks for your help. I should have clarified that it was on the same server.
 
  


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