PeerGuardian 2Firewall to allow or block external IPs
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Written by Andrei David
This software is designed to block or allow list with external IPs to make connections to your computer or your computer to connect to these IPs.
Primarily was oriented P2P file sharing technology and services because you expose your IP and others may use this information to try to connect to your computer and this can be a high security risk.
PeerGuardian offers different lists with IPs which can be blocked, you need to choose the type of activity at the beginning, in order to retrieve that list: P2P, advertisement, spyware servers and even public institutions.
From Options (List manager) you can add more lists from their server or add custom one with TXT or P2P extension.
Displays all current activity and with right click you can allow or block any ip.