I have installed Eset Smart Security 6 and i use for firewall "Interactive Filtering Mode" and when i want to play online games like world of warcraft or war thunder , says check your firewall.
But when firewall ask me if i want to add game executable to Allow i press Allow and remember the rule.
Firewall seems to be bugged or something ?
I use ESS 6 with interactive mode too.
I play world of tanks, war thunder etc.
But , you need to add game your executables (are two for each game ...launcher and name of game)
I followed this guide and games now working http://shar.es/CPxOS
Good Luck and tell us if that guide worked for you.
Yes now working , thank you very much !!