Ok, got this from a friend. Havnt got a clue where its from or if it works. Doing a repack of it so it fits the general standard.

Original info below.

/Helshad

Call of Duty Dedicated Linux Server v1.1 Full Delta Server (No CD-key) Crack!

download the Dedicated Linux Server v1.1 Full Delta From here:
http://www.iwnation.com/Downloads/CallOfDuty/cod-lnxded-1.1d.tar.bz2

open the README file and follow instructions...
after you setup you'r server, if you will try to join withou't orginal cd-key or cd-key in use he will block you.
use the crack and replace him with original 'cod_lnxded', restart your server and try to rejoin.
work no :)? hehe well thanks me.

-Fix Problem That Server not showing up on "The all seeing eye","Gamespy", "CoD Join Game Menu"

P.S
1 .use the crack to your game and not just for server, you can find windows crack here:
http://spacetarget.com/games/pc_call_of_duty.shtml
2 .make sure you allow download at your server, if not use this command:
seta sv_allowDownload "1"
3. i really respect activision and IW BUT i dont think that the right solution is to block unoriginal CD-Keys.
no body want to pay for empty servers.
4. i have full original copy of call of duty.

Enjoy!
T.G