At this moment, any requests to: www.setcomputing.com is served by my
personal Linux machine with Apache (machine name: setcomputing). What
I want to be able to do is the following: when a user types:
dev.setcomputing.com I want to be able to forward this request to a
windows machine (singularity).

My setup is the following. Both setcomputing and singularity are
connected using a NETGEAR RP614 router. Each machine therefore is
assigned a private IP address. What I want to do is any requests to:
dev.setcomputing.com to be forwarded to 192.168.0.2 (singularity or
the windows machine).

NOTE: The primary web-server is: Apache.

Is this possible? I know how to setup VirtualHosts which can map
hostnames to Directories but is mapping from hostnames to IP addresses
(or machines) possible? The solution must be interenet based not
intranet.

Since this is a rather complicated issue, I may not have been as
succinct as I would like to be; so please let me know if you have any
questions.

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Request for Question Clarification by mosquitohawk-ga on 17 Feb 2004 17:39 PST

I don't know the answer to this question, but you may consider
visiting http://www.webhostingtalk.com/ for solutions.

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Clarification of Question by salman1-ga on 22 Feb 2004 00:56 PST

brunson-ga,

After several tries I couldn't get ProxyPass to work. No matter what I
try. It just doesn't work. dev.setcomputing.com still goes to the
main-page (where WWW points to). I tried several other things, one
rather than dev.setcomputing.com I tried it with a folder like:
http://www.setcomputing.com/test to go to: http://192.168.0.2
(internal IP). So this is what I did:

(this is almost at the top of the .conf file, I don't know if that matters).

ProxyPass /test/ http://192.168.0.2
ProxyPassReverse /test/ http://192.168.0.2

(when I type: www.setcomputing.com/test/, I get a 404 message).

I loaded mod_proxy.so using:
LoadModule proxy_module modules/mod_proxy.so

Finally I uncommented:
<IfModule mod_proxy.c>
ProxyRequest Off

<Proxy *>
   Order deny,allow
   Allow from all
</Proxy>
</IfModule>

I don't see what's going on. A little help would be appreciated.

Thanks,

This can be accomplished using the reverse proxy capabilities of
mod_proxy.  Update your DNS zone to include dev.setcomputing.com and
have it resolve to the address of your routers public interface so
both dev and www point to it.

Then, in your apache config (after loading the module) include the following:

<Proxy *>
Order deny,allow
Allow from all
</Proxy>

ProxyPass http://dev.setcomputing.com http://localname
ProxyPassReverse http://localname http://dev.setcomputing.com


Fairly straightforward.

I am doing this successfully for many sites using blocks like this:

<VirtualHost *>
    ServerName dev.setcomputing.com
    ProxyPass / http://192.168.0.2/
    ProxyPassReverse http://192.168.0.2/    
    <Location />
         order allow,deny
         allow from all
     </Location>
</VirtualHost>

Give that a try; it's certainly working for me. I assume you have done 
"AddModule mod_proxy.c" as well, and LoadModule if you are loading it
dynamically.