Peer Guardian 2 is Phoenix Labs' premier IP blocker for Windows.Peer Guardian 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.
When online, various organizations attempt to connect to your IP and steal personal information without you being aware of it.
Peer Guardian was designed to prevent unauthorized connections by blocking harmful IPs from getting in touch with your computer.
Peer Guardian is a free and open source program developed by Phoenix Labs.
It is capable of blocking incoming and outgoing connections based on IP blacklists.
The aim of its use was to block peers on the same torrent download from any visibility of your own peer connection using IP lists.
The system is also capable of blocking custom ranges, depending upon user preferences.
The original version was released for free and the source code was made available under an open source license. The development of version 2.0 was led by Cory Nelson, and aimed to resolve many of the shortcomings of Version 1.
Due to Version 1.0 only blocking TCP ports Peer then shifted to uk where Protowall, The blocklist Manager, B. Version 2 enabled support for more protocols (TCP, UDP, ICMP, etc.), multiple block lists, and automatic updates.
The original Peer Guardian (1.0) was programmed in Visual Basic and quickly became popular among P2P users despite blocking only the common TCP protocol and being known for high RAM and CPU usage when connected to P2P networks.