Multiplayer help?

Whenever I try to make a server to play multiplayer with my friends, they say that it says “server is not responding” when they try to join. I unchecked the LAN box and I tried typing sv_lan 0 in console, but it still doesn’t let them join. Help?

Have you forwarded your ports?

This happens regardless of what you do, forwarded or not, though if you’re not it’ll fail afterwards anyway, your friends must join by IP.

Could you tell me how I might instruct my friends how to join by IP?

Easy Peasy, Tell them to open up console and type in: connect: IP Adress (The Ip adress can be found when they attempt to join)