All the server are only accessible at the LAN for now, there all vanilla server so no mods let see how yo do going back to basics.

So here's the games line for you:

Modern Warefare 3

Call of Duty:Black OPS 3

Counter Strike Source Join Server - Lan use Only

Counter Strike:Go Join Server - Lan use Only

Tf2 / Payload Race / Payload / Capture Point / Attack and Defense Join Server - Lan use Only

DOD Join Server - Lan use Only

HL2 Death Match Join Server - Lan use Only

Quake 3 Rocket Arena / Threewave (will show in LAN listing if not 192.168.2.104 normal port)

Quake Live Join Server

UT4 Facing Worlds ( go to conesole and type "open 192.168.2.104" )

Xonotic