PeerGuardian is a firewall program for Windows that was designed to help peer-to-peer users to protect their privacy from various Internet threats. If you want to simply increase the download speed, you may use such tools as Xcelerator.

Goal

When browsing websites, some hosts may attempt to join your network and steal personal information without you being aware of it. This application was developed with a specific goal of preventing unauthorized connections by blocking malicious IPs from getting access to your computer.

Overview

PeerGuardian is basically a firewall software that is especially effective when it comes to protecting your peer-to-peer connections. It is worth noting that it has access to an online blocklist database, thus ensuring everyday security. Please note, the developers ceased support for this project. However, there are alternatives available like PeerBlock.

Configure restrictions

The deployment procedure requires user assistance, since you need to configure a few settings. The first step is to choose the type of items to be blocked, you can select P2P, advertisement, spyware, government and educational categories. Next, the program prompts you to add the list of IPs you want to process. The final step allows you to adjust the update functionality for the online database.

Features

free to download and use;
compatible with modern Windows versions;
gives you the ability to protect your system via firewall;
it is possible to specify the list of IP addresses;
comes with a dedicated online blocklist database.