This will work for lan Only
what i found ...
a) Edit the file %windir%system32driversetchosts (NT,Win2k,XP)
or %windir%hosts.sam (Win9x) and add the following entries
(syntax is strange, but needed for lame VLAN implementations):
127.0.0.1 wolf.idsoftware.com
127.0.0.1 wolfauthorize.idsoftware.com
wolf.idsoftware.com 127.0.0.1
wolfauthorize.idsoftware.com 127.0.0.1
b) Connect your local machine/LAN to your friends' machine(s) using VPN
(a feature built-in win2k/XP and available for other win32 versions also)
NOTE: This will help you play with other people on the internet. You can connect with
your friend to kick his arse. Also, you can set up your local LAN with one wolfenstein
server, invite your grandma and grandpa (so you already have three players) and then
connect your LAN to another LAN on the internet through VPN. This way, you can get
a similar feeling to what you would get if you'd play multiplayer through the
idSoftware hub server.
If you are some kind of a freak, you could now set up a website proclamating open
VLANs with a running Wolfenstein server or even write a patch that will redirect
traffic (you figure out yourself). I'm neither gonna write that patch nor am I gonna
help anyone trying to set this up - you do want to buy the original if this is not
enough for you, don't be a lame leech.
Also, if you don't know how to set up VPN or similar tunneling methods, then I'll
repeat once again: buy the fucking original! it's worth it!