PeerGuardian 2 is an IP address blocker that can prevent access to thousands of sites. It uses multiple, categorized lists and you can choose which type of site(s) you want to block, including spyware/malware related, advertising related, P2P file sharing related and more. The lists are maintained and updated by a community and you can automatically have the software download the latests lists, and also create your own based on your personal blocking preference. PeerGuardian 2 keeps track of all blocked sites, and you can easily overwrite blocking rules or add new site directly from the log viewer.

The license of this software is Freeware, you can free download and free use this firewall software.