>In general, you should set your computer to block ALL incoming traffic that wasn't generated or requested by you. That is, why would an unknown computer want start talking to your computer if you didn't ask for something first?

Yes, that's always my policy too. Better safe than sorry.

>I wouldn't worry about the name of the attacks, some of them might not even be attacks, for example, your ISP might just be interested in knowing if your IP is being used (by means of a ping). Or a google robot might be scanning your host for a webpage.

That's what I'm more concerned about - blocking something that might cause trouble (like when I hard-bounced some emails once, and I was delisted by some mail servers 2 weeks for punishment). But it seems to me that anything valid, such as my ISP, would have their name somewhere (Event URLs, and in WHOIS, certainly - WHOIS displayed on an MPF page for each event) so users would know these were valid hits. I guess I'll find out over time, with the MPF blocking...

Still interested if anyone can explain what those 4 event types mean in "regular folks" language...