Is there a way to play Call of Duty: Black Ops on LAN without an internet connection?
Solution 1:
To authenticate the user account, each user has to have an internet connection. Then setup a dedicated LAN server on the net and connect to this by using the in-game console (look it up on the net on how to enable the console):
/connect <ip>:<port>
you can fetch your local-ip of the server PC by looking it up via command line
c:\ipconfig
it could be something like 192.168.0.3, depending on your router settings. Then just type
/connect 192.168.0.3 (if standard port, you may omit it).