well for lan connection i use direct connection (192.168.x.x )ingame browser all the time but all outside incoming connecion people use provider ip now it all about router firewall and port you can test visibility online with https://topconanservers.com/server/70.80.223.3:27015 use your own ip in the search bar if in that browser it not show your server you got something wrong with your port firewall etc....