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Is the following possiable: I have an RH 7.1 iptables filewall with three NIC's. eth0 = internet x.x.x.x eth1 = DMZ 192.168.1.x eth2 = LAN 192.169.0.x
I would like to have a sendmail and DNS box in the DMZ. Is there a way to only use one external IP (internet) and forward any DNS querys to the DMZ DNS server and ofcourse forward mail to the DMZ sendmail server? I seem to have DNS working going from my LAN interface to the DMZ for DNS and then out to the internet. If the above is possiable is there a site you can direct me to for further help or can you offer some assistance?
Name: junky_toof Date: May 9, 2002 at 13:02:30 Pacific
Reply:
You would need to pay me for a config.
I will give you some hints. #1 iptables supports port redirection with or without nat. #2 you will have to redirect incoming requests for ports 25 and 53 to your internal name/mail servers. I suggest egress logging lists for your dmz boxes at a minimum. #3 Other than that, the security side of of your config will need to be tuned.
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