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PeerBlock v1.0.0 r181


PeerBlock blocks "known bad" computers from accessing yours, and vice versa.  Depending on the lists you have it setup to use, you can block governments, corporations, machines flagged for anti-p2p activites, even entire countries!  Whether you're sharing files with Bittorrent or just surfing the web, PeerBlock can help protect you from the bad guys.


An IP Address is like a telephone number, or a street address, for your computer - any time you connect to the Internet, your IP address is used to make that connection.  If you go to "", your computer first translates this to an IP address (e.g., then sends a request to that address for a web-page; when the computer receives this message, part of it contains your computer's IP address so that it knows how to send the web-page back to you.

PeerBlock is a type of program known as an "IP Filter".  It lives way down deep inside the networking code on your computer - the stuff in Windows that actually makes/receives network connections for you - and inspects everything that flows past it.  It looks at the IP address this network "packet" is coming from, and compares is against a list of "bad" ip-addresses; if it finds a match, it doesn't let that network packet make it through to the rest of your computer.  If also looks at the IP address your network packets are going to, and does the same thing.







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