I’ve finally got high-speed access, so I decided to see what I could do about security. On my PowerBook G4 I opened System Preferences. Then I opened the Sharing folder. Next I turned on the firewall, allowing only Internet Time to be accessed. In the Advanced tab I checked Block UDP Traffic, Enable Firewall Logging, and Enable Stealth Mode. When I checked the log I got the following (there are more – this is just a sample. My computer name has been edited for this post):
So what exactly am I blocking?