WallWatcher.exe is a firewall watcher. More information can be found here. Everybody with a paranoid color of orange or worse better use this.

Quote:

• provides filtering, immediate alerts, emailed alerts, historical analysis, summaries, and charts
• filters let you choose what data and time periods to log, display, analyze, and chart
• alerts offer real-time visual and audible signals of possible intrusion attempts
• historical analysis helps you find patterns of recent intrusion attempts
• summaries condense log histories for easier review
• user-selectable charts let you spot patterns of suspicious activities