PeerGuardian is a powerful yet small firewall application especially designed for P2P users and anyone else who wants to protect his or her computer from unauthorized searches instigated by private agencies and corporations. PeerGuardian works by blocking and logging all TCP/IP connections to and from known IP ranges used by known P2P foes, such as the RIAA, MPAA, MediaForce, MediaDefender, BaySTP, Ranger, OverPeer, NetPD? To make sure that the block-list used to block malicious connections is up-to-date, PeerGuardian uses an on-line block-list Database that is continuously updated on a daily basis--so your privacy will remain safe while swapping files. PeerGuardian is compatible with all TCP/IP based file-sharing applications, such as Kazaa, iMesh, LimeWire, eMule, Grokster, DC++, Shareaza. In short, PeerGuardian is the must have tool for any file swapper.

Version 1.99.21 features updated block list.