risk of open application port on router

February 10, 2011 at 23:28:02
Specs: Windows Vista
my new room mate helped me with a router set up before and at some point I changed the ISP and reset everything with a new password. My room mate asked for the new password, so I logged into my router and from there he took over, copied the password and also opened up a port range to go to some IP address which I don't know whose it is.

The next day my laptop wouldn't start and ran some Repair application. Eventually it started back up and I ran a virus and spam check but found nothing.

My question is: why would my roomate open up a range of ports? And what risk does this pose for me? I actually just disabled the open ports but I don't want to overreact either.


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February 11, 2011 at 12:53:04
Ports are how your computer (or router) communicates with the outside world. Your roommate may need to open some ports for programs that demand specific ports to function optimally. He may have a game system that requires port activation. Not as scary as it sounds.

I would ask your roommate just to make sure he knows what hes doing.

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