Windows Firewall Log Analyser is a free utility that will read and analyse your native Windows (XP, Vista, Win 7, Win 8 32/64 bit) Firewall Log.
It will quickly show you what protocols, ports and source hosts are the most active on your network. Using the WinFirewallLogAnalyser can help you to rapidly track down the source of malware or noisy network applications, and help you optimise your home or corporate network. The tool comes with its own database of network service ports and protocols, and can offer suggestions on what to do when particular packets are discovered.
WinFirewallLogAnalyser is designed for Windows XP, Vista, Windows 7 and 8 – 32 and 64 bit, with the Microsoft .NET Framework version 4.0 (included in the download installer). The only requirement is that your Windows Firewall be enabled and set to log packets, or that you have a Windows firewall log from another PC that you wish to examine.