When I'm not at my computer, I always set ZoneAlarm Pro to the "Stop all Internet activity" state. I had complete confidence that ZoneAlarm Pro did what it said and blocked ALL Internet communications.
That confidence has just now been shaken. I came back to my computer after several hours away with the "Stop all Internet activity" state set, and discovered that my anti-virus tool (Avira Desktop Premium) showed a report that said it had just updated the virus definition database successfully! It reported "4 files have been updated". That message never stays put long, so I know it wasn't a hold-over from hours past, when I last had Internet activity enabled!
To double-check, I enabled Internet access through ZoneAlarm and told Avira to check for new updates, but it reported that it had already been updated, just as it had indicated! I tried setting "Stop all Internet activity" again then manually tried to update the defs, but this time ZoneAlarm had correctly disabled Internet access and the update failed for that reason.
But then I looked at Avira's logs, and it DID report that it had successfully updated it's definitions right during the period that I was CERTAIN that ZoneAlarm was set to "Stop all Internet activity"!
How did that happen? Does "Stop all Internet activity" stop all Internet activity or not? Can something slip past that after all? What's the deal?
Operating System:Windows XP Pro
Product Name:ZoneAlarm Pro