This is a tip about how to make e.g. an intranet with more servers appear like one server.
Why:
1) You can get singel sign on (using basic auth)
2) You can have install more servers accessible with only one external IP adress and internal IP adresses for the rest of them.
The trick:
Use squid and a redirect program..
the redirect programs will transform urls like:
/server1/somepath into http://server1/somepath
or
/somepath into http://defaultserver/somepath
If you can use this functionality feel free to mail me for more info and the redir program.