Forward an URL from IIS to another server

We have a customer with two web servers (one is IIS 4.0) and the other one is a Linux based server. Both of them hosts a couple of domain names (public domain name as company.com for example).

Problem is that they have only one public IP-nr and no real proxy server. So the firewall now sends all http-traffic to the IIS-server.

As you already can understand, I would like to redirect som of the domain names to the other server. In IIS 4.0, I have configured a web site listening to all of these domain names, and entered "forward to URL" and the IP-nr of the second server (Linux-based). That config does not work since the orginal URL is lost and all visitors are shown the standard website at the linux-server.

How do I do this on the IIS-server? Manually add on website per domain, and enter the target URL as "http://XXX.XXX.XXX.XXX/~username/" works but the URL does not look nice for the visitor.

Any other suggestion?

Thanks in advance
// Martin
Martin_RadboAsked:
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Martin_RadboAuthor Commented:
We decided to user the "Forward to an URL"-option for the websites involved and that works fine even if the solution is not very "cosmetic" correct.

Thanks for your suggestions anyway.
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shalomcCTOCommented:
switch between the servers.
direct all traffic to the apache server, define virtual hosts on apache for the IIS domains and use reverse proxy (with mod_proxy) to the IIS.

ShalomC
NameVirtualHost *:80
 
<VirtualHost *:80>
# proxy to IIS
 
ServerName www.public-domain.com
ServerAlias public-domain.com *.public-domain.com
 
ProxyRequests off
ProxyPass / http://iis-internal-server/ 
ProxyPassReverse / http://iis-internal-server/ 
# ProxyPassReverseCookieDomain   # check if necessary
# ProxyPreserveHost On           # check if necessary
</VirtualHost>
 
<VirtualHost *:80>
# standard apache vhost
ServerName www.otherdomain.tld
DocumentRoot /www/otherdomain
</VirtualHost>

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BillAndrasCommented:
I would recommend upgrading from IIS 4.0 to IIS 7 with built in rewriting etc but for now you will need to use an ISAPI filter to proxy the requests. I do not have an IIS 4.0 install to try this on but check out the page listed below.
Link:
http://iisrelayj.sourceforge.net/examples.php

Download:
http://sourceforge.net/project/showfiles.php?group_id=46195
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Martin_RadboAuthor Commented:
Upgradering is not an option for several reasons.

But Shaloms idea could work, we will try that I get back with result or more questions.

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