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Version: 2	Size: 1.90 MB
License [?]: Freeware	Price: Not available
Last Updated: Aug 18, 2009	Category: IP, Ping and Trace Utilities Software
Developer: Phoenix Labs
Operating System: Windows 98 Windows 2000 Windows ME Windows XP Windows Server 2003 Windows Vista Windows 7
Additional Requirements: None
Limitations Not available

PeerGuardian 2 is Phoenix Labs' premier IP blocker for Windows. PeerGuardian 2 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.

How PeerGuardian Works
PeerGuardian is an open source IP filter that is designed to block the IP addresses of certain organizations and corporations that may wish to harm a users privacy while using the Internet and peer-to-peer networks.

PeerGuardian 2 requires no driver installation, yet blocks IP addresses at a far higher speed than was previously available - never above 1% CPU on most test systems. On Windows 2000 and greater PeerGuardian 2 blocks at a kernel level, acting against every protocol used within the windows system. On Windows 98 or Me it blocks TCP only (due to technical reasons, kernel blocking in 98/ME is not feasible) with the same high performance of the Windows 2000 version.

PeerGuardian blocks IP addresses based upon a list of IP addresses collected by many methods. By default, PeerGuardian 2 collects IP addresses from the Blocklist.org website. Blocklist.org is a website designed to allow users to interactively manage and block the IP addresses of certain organisations and companies. Founded in early 2005 by phoenixlabs.org, it is intended to be a platform agnostic database that utilises published open formats. Blocklist.org is still under construction, and more detail about how to use the database to submit new ranges, and report bad ranges will be added to a later version of this manual.

What's New In PeerGuardian 2?
PeerGuardian 2 is now totally automatic. You do not need to install a driver, simply run the program without any visits to the control panel. The new start-up wizard makes things easier than ever.

Also kernel level blocking make the system far more efficient and powerful than any previous version.

How safe is PeerGuardian, really?
Well, it is accurate in the sense that it blocks everything on your blocklist. It is impossible to know all the addresses to block, so while it will increase your safety to a good extent, it can never be perfect.