A beginner's question about mods

[Befuddled]

I had a server up the other day before I got mods, and my friend and I were playing and stuff...however, now that I have mods, does he have to have the exact same ones before he can join? Or will it somehow, OUT of some miraculous happening, just so happen to somehow work for him as well? Just wondering, have'nt tried yet, but maybe later or so I shall.

[Linuxdirk]

You just need to install the mods on the server or computer you host the map on. All other players can simply connect and do not need any of the mods installed.