Blocking access to Online games?

I was a child, when mom said I was playing too much, replied "well mom, now go to the porch to drink beer." Think again, do not hurt the baby :D

Instead of a ban would be better to think of what to do so that it would be more interesting games.

Game — the result of a "failure". At least he perceives so. Try to find out that he is not satisfied in life. Quite possibly away from reality kind of difficulties with peers, problems of communication with classmates (I do not know the age), the problems of failing to meet parental expectations, just a lack of communication with close people (mom dad at work), boredom.

www.comodo.com/home/internet-security/firewall.php
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In five minutes you can train him a lot.

Little information. If possible www.opendns.com/. Generally the supplementary question.

aren't I do on the computer the password to be? in BIOS, in Windows... all poudalyat MMORPGs from my computer? in vin7 was able parental controls on the games to include. If the second world war on the official server there is an account in the parental control.