When my friends try and connect it says 'Server Not Responding"

[Ryansoft]

Why does it say that??

[Wozzer]

Can they add your server in their favourites?
Can they see the server details?
Are all your ports forwarded correctly?
Whats your ext ip?

[skeletor]

If they are trying to connect to your server when your on the same lan as it, they would actually connect to a different ip than you. So that won't work. Even on steam your servers ip will show up as 192.x.x.x and they obviously won't be able to connect to that.