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 installation procedure was also simplified, no longer requiring a system restart and driver installation.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.It is recommended to disable the filtering of HTTP connections by adding the following to Conversely, one could white list all the ports except the ones used by the program to be blocked.The following example only use the block lists to stop incoming traffic on ports 53 (DNS) and 80 (HTTP): systemd initialization of the system means that it's quite possible for a server to be briefly unprotected, prior to pgl launch.
It is no longer developed, with the latest version released on April 22, 2005.Although IP addresses of government and business entities are easily added to a list of IP addresses to be blocked, there is no means for Peer Guardian to block access by a government or business using an undocumented IP address to identify people engaged in copyright infringement or other possibly unlawful activity.Peer Guardian Lite is a derivative of Peer Guardian 2 made to consume as little CPU and RAM as possible.By December 2003, it had been downloaded 1 million times. After 7 months of development, in February 2005 Version 2 of Peer Guardian was released as a beta.
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.
pgl is based on the Linux kernel netfilter framework and iptables.