PeerGuardian

"A firewall application designed for P2P users who want to protect computer"
By SoftCns Editor: A powerful yet petite firewall application especially designed for P2P users who want to protect their computers

PeerGuardian is an IP blocker that integrates support for multiple lists, list editing, automatic updates, and blocking all of IPv4 (TCP, UDP, ICMP, etc), making it the safest and easiest way to protect your privacy on P2P..

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, and more. In short, PeerGuardian is the must have tool for any file swapper.