From mboxrd@z Thu Jan  1 00:00:00 1970
From: Micha Silver <micha@arava.co.il>
Subject: Re: AW: a NAT question
Date: Fri, 16 Jul 2004 11:51:54 +0300
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To: Payal Rathod <payalrathod@gmail.com>
Cc: netfilter <netfilter@lists.netfilter.org>


>>Hi,
>>We have been allocated 2 more IPs by our ISP for a period of 1 month
>>for our purpose. Now these 2 IPs will be assigned to 2 Windows
>>machines which are to be accessed from outside. We want port 21 or one
>>machine to be accessed from outside and port 80 and 9001, 25 of other
>>machine. Which is the best way to allow access to these machines from
>>outside still having them under my firewall? I thought of having ip
>>aliases on the Linux box and forwarding the connections to the
>>respective windows box.
>>Can someone explain an easy way for this?
>>With warm regards,
>>-Payal
>>    
>>
Payal:
Have you tried Shorewall? http://www.shorewall.net
You can do it with either DNAT or proxy arp.
Shorewall makes jobs like this quite simple and easy to understand.

--Micha