How do some networks block games i've installed onto my laptop?

I've recently noticed that on certain networks I connect my laptop to that sometimes the updaters and applications for games I have just wont start. how does a network do that, and how can I get rid of it. (example of a game being blocked: Aion online)

that's because of your firewall .
go to firewall option , and add that game to be allowed to use network .


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