[Not Spam] Issues with connections gmod server

[awesomestickman]

Hello, recently I've been trying to host a gmod server with my friends. At first I tried with the default local gmod server and typing sv_lan 0 but that didn't work. Since then I've been combing google and nothing seems to work.
Things I have done:
Port Forwarding - I am 99% sure this is not the problem, in the attachment you can see my setup and all the entries not titled gmod work fine and strangers can connect to my server. I have also used various port checking tools and they all return positive.

  ports.png (Size: 36.99 KB / Downloads: 17)
Using a static IP.
Telling friends to connect with "connect "my external ip""
Telling friends to connect with "connect "my external ip":27015"
I also tried using a different port in the command line (27018) to see if any other programs were using it and it showed up in the console log but still didn't work.

One thing that doesn't work is myself connecting through my external ip, however I can connect with my local ip just fine(finding in server browser).

I'm open to anything even retrying the above.

BASIC INFO
Operating System: Windows 7
Game: Garry's Mod
Hosted on the same gaming PC I'm playing garry's mod with.

I'm launching through a bat file

Code:

@echo off
cls
echo Protecting srcds from crashes...
echo If you want to close srcds and this script, close the srcds window and type Y depending on your language followed by Enter.
title srcds.com Watchdog
:srcds
echo (%time%) srcds started.
start /wait srcds.exe -console -game garrysmod +map gm_flatgrass +maxplayers 16
echo (%time%) WARNING: srcds closed or crashed, restarting.

Server's console log

  server console.png (Size: 20.27 KB / Downloads: 19)

Thanks in advance.