Help needed for server setup

Hello, sorry for my stupid question, but i'm not sure how to do it: i have installed Et Steam Version and ET legacy. What i want is to host a game where I can play with 1 friend and bots in the same time. I have checked the readme files and managed to enable omnibot, I added bots with "/bot addbot" and everything runs just fine for me. But how can my friend join my game? If i go to server details it says localhost, and not the ip. I'm guessing my friend should type something like "connect to 1.2.3" in his console, but obviously it won't work with "connect to localhost". Sorry again for my stupid question, i know how is sounds :( any help is highly appreciated. Thanks.