[NTLUG:Discuss] Apache reverse proxy question

[Craig Gill]

I need alittle help configuring apache reverse proxy.

Apache 2.2.4 on port 80
Lighttpd 1.4.18 on port 81

I'm trying have http://media.xyz.com/ proxy to
http://proxiedsite.com:81/ on the same box, but apache has 1 virtual
host already running http://www.xyz.com, is it possible to proxy just
the media.xyz.com only or could somebody provide a config example?
I've looked at the apache proxy doc's but it doesn't mention this
scenario.  I don't want media.xyz.com to interfere with the
www.xyz.com site.
http://httpd.apache.org/docs/2.2/mod/mod_proxy.html


NameVirtualHost *:80
<VirtualHost _default_:80>
DocumentRoot "/web/Sites/xyz"
ServerName www.xyz.com
ServerAlias xyz.com
LogLevel emerg
Include xyz_log
DirectoryIndex index.html index.htm index.php
</VirtualHost>


In the proxy.conf I know I need at minimum:

ProxyRequests Off
ProxyPass / http://0.0.0.0:81/
ProxyPassReverse / http://0.0.0.0:81/

The whole subdomain part is whats throwing me off.

Any suggestions?
Craig