connection failed after 4 retries!

I have followed the tutorial on and selected hl2 steam server filled in everything, i go to get my ip, add :27015 to the end of it, click create a server on gmod the ask my friend to type in the console connect, it goes to the loading screen then it comes up “connection failed after 4 retries” What am i doing wrong!

Did you setup an internal static IP?

yes i did

I don’t think gets it right for gmod steam servers. You’ll need to forward these ports:
UDP 1200 (Friends Network)
UDP 27000 to 27015 (Gameport)
UDP 27020
TCP 27000 to 27050
TCP 27015 (SRCDS Rcon port)

Each one individually… Yes it’s a pain. But it should work. Also you should connect to your own server through LAN. I’m guessing that is your external ip. Try connect in console. This should connect you to localhost which would be your server. I think you know this… You were right in telling your friend to connect to your external ip. Does your external ip ever change? Maybe you should set up a account. Make an account, add a hostname, and download the updater service. This gives your server ip a name and automatically updates it to whatever the ip changes to. For example, instead of “connect” your friend would type “connect” (Depending on what you name your host and what server thing you use). I hope i helped… I still can’t connect to my own server. All my friends can though.