Webservers behind nat

opheophe · 03-05-2011, 11:56 AM

Hello,

I'm contemplating setting up two webservers behind a nat router, both on port 80, but how would I configure that in IPtables? I mean; I want outsiders to be able to connect to both of them.

acid_kewpie · 03-05-2011, 12:05 PM

well you'd just pick out 2 public IP's and do a dnat redirect

iptables -I INPUT -d 1.2.3.1 -i eth0 -m tcp --dport 80 -m state --state NEW -j DNAT --to-destination 192.168.1.1
iptables -I INPUT -d 1.2.3.2 -i eth0 -m tcp --dport 80 -m state --state NEW -j DNAT --to-destination 192.168.1.2

assuming that these IP's are being present on the nat router, and not routed through it, which seems logical if you're natting.