Planet Half-Life has posted a couple of tips on how to play the TeamFortress Classic LAN release over the Internet. I've also received the tip from a couple of sources that point out that TFC works fine out of the box with Kali, since Kali's original function is to allow IPX games to be played over the Internet. Here's the lowdown on the other workarounds from PH-L for those too eager to wait for this Friday's release of the full 'net version (though if you try this, I would suggest it's only fair to hold off judgement about Internet playability, considering the nature of this tip):

It appears that you can play the LAN Team Fortress Classic version over the 'net. Doom writes in and reports: First off we launched the dedicated server with "hl -game tfc -console" then pulled down the console and typed "connect ipaddress:27015."

He's another way as sent in by xp3rt:

I got it to work, but I do this: e:\sierra\half-life\hl.exe -console -toconsole +connect (ip adress)

I've been playin quite a while. And for a dedicated server, I've used this:

e:\sierra\half-life\hlds.exe -game tfc +map 2fort -port 27016

I know for a fact that works, cuz I've been playing w/ several other people.