web server behind firewall

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From - Mon Sep 18 08:00:42 2000
Path: news.randori.com!newsfeeder.randori.com!newscon06.news.prodigy.com!newscon04.news.prodigy.com!prodigy.com!news.tele.dk!194.25.134.62!newsfeed00.sul.t-online.de!newsfeed01.sul.t-online.de!t-online.de!blackbush.xlink.net!rz.uni-karlsruhe.de!schlund.de!inka.de!not-for-mail
From: Bernd Eckenfels <ecki@lina.inka.de>
Newsgroups: comp.os.linux.misc,comp.os.linux.networking
Subject: Re: 2 webservers behind firewall? HOW
Date: 18 Sep 2000 01:59:20 GMT
Organization: (Posted via) INKA e.V. http://www.inka.de/
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NNTP-Posting-Host: lina.inka.de
X-Trace: sapa.inka.de 969242360 12508 212.227.16.17 (18 Sep 2000 01:59:20 GMT)
X-Complaints-To: newsmaster@inka.de
NNTP-Posting-Date: 18 Sep 2000 01:59:20 GMT
User-Agent: tin/1.4.1-19991201 ("Polish") (UNIX) (Linux/2.4.0-test2 (i686))
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In comp.os.linux.networking D. Abuan <dennis@exposoft.net> wrote:
> I have two webservers behind a Redhat 6.2 PC running IP Masquerading.  I
> know how to port forward one webserver
> if there is a request to my external PC's IP address at port 80.  But I want
> to set up another one....running NT (for
> my room mate who wants to run IIS) how can I set this up????

Asuming you dont want to have two different ports (which is easy and will
work as long as you can tell the users what URL to use) you have to assign
your firewall two oficial ip addresses or use a reverse proxy with url
rewriting or host-name-based virtual hosts. Apache can do this for example.
Then you can assign two DNS names to your one official address, or you can
have two different directories point to two different servers:


www.aaa.com = www.bbb.com = 1.2.3.4

http://www.aaa.com/ -> http://10.0.0.1
http://www.bbb.com/ -> http://10.0.0.2

or

http://www.aaa.com/s1/* -> http://10.0.0.1/*
http://www.aaa.com/s2/* -> http://10.0.0.2/*

this is done in apache with mod_proxy like this:
--
NameVirtualHost 1.2.3.4

<VirtualHost www.aaa.com:80>
ServerName www.aaa.com
ProxyPass / http://10.0.0.1/
</VirtualHost>

<VirtualHost www.bbb.com:80>
ServerName www.bbb.com
ProxyPass / http://10.0.0.2/
</VirtualHost>
--

Greetings
Bernd

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