Server not apperaing in list

[madsherlock]

I had the same problem as you. My dad opened up all ports from 27000 to 27100 both tcp and udp or whatever. Then in my server.cfg i put some parameters:
sv_lan 0
heartbeat

I believe that heartbeat will make it "speak" with the steam server list or something so that other people can see it.
At first, i couldnt see my scrds on the internet list. But then with this heartbeat thing, I could see it. But I can only conenct to the one appearing in LAN of course.