PeerGuardian 2 is Phoenix Labs'€™ premier IP blocker for Windows. It is a freeware firewall application that's professional.
Here are some screenshots to illustrate the features and user interface of this application:
Customizable firewall. Screenshot of PeerGuardian - 1347px · 995pxFree IP Blocker for Professionals. Screenshot of PeerGuardian - 1347px · 995pxTime to Get Protected. Screenshot of PeerGuardian - 1347px · 995pxFirewall designed for users on peer-to-peer networks. Screenshot of PeerGuardian - 1818px · 1168pxPeerGuardian: User interface. Screenshot of PeerGuardian - 1347px · 995pxScreenshot of PeerGuardian - Size: 1347px · 995px
RusRoute
simplewall
Windows Firewall Control
Comodo Internet Security and Firewall
PeerBlock