Setting up different webservices based on port number

Question

I have several different web services set up on different port numbers, but would like to access them based on the sub domain instead of the port number.
for instance we have Rumpus ftp running on port 8000
webmail running on port 82
wiki running on port 80
at the moment they are accessed by our.domain-name.co.uk:port number
I have the following sub domains set up with our domain registrar which point to our server.
ftp
web
mail
how do I tie all this together so just typing ftp.domain-name.co.uk points to rumpus on port 8000

Answer 1

Short answer, double-up.
The port number will take precedence, so if you have a virtual host listening on port 8000 then it's only going to process requests on that port. There's no way for it to process hits that come in on a different port.
You could configure the port 80 virtual host as a proxy to proxy the connection to the port 82/8000 server based on the hostname, but it would be easier (by far) to just setup another virtual host.
For example, you setup:
*:82 -> wiki
then you setup another virtual host:
web.domain-name.co.uk:80 -> wiki
Likewise you setup:
*:82 - > webmail
and
mail.domain-name.co.uk:80 -> webmail
In both cases you'd need to duplicate the site's configuration, which means more administration - if you make a change to your webmail setup you need to make it in both places.
The one gotcha is that IIRC Rumpus runs as its own server, not an Apache virtual host, so that may need to be setup as a proxy.