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Manager, Networking Forums
Join Date: Sep 2002
Location: S.E. Pennsylvania, US
Posts: 41,720
OS: Windows 7, XP-Pro, Vista, Linux
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Re: Constantly listening on a port - Security issue?
It's what is called an "attack surface". The more ports you open, the larger the attack surface, and the easier it is for an attacker to find a bug that allows him in the door. The trick is to minimize the attack surface as much as possible. Obviously, if you want the server functionality, you can't eliminate it totally.
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