I just switched from BalckIce to Commodo (BlackIce is being discontinued).
The first alarm I saw when comodo was setting up was “svhost wishes to export to the Internet through UDP port” or something very similar. I wasn’t on the Internet (dialup) so didn’t pay much attention to this and selected Allow.
Now I am concerned if I did so correctly. Was BI allowing something it shouldn’t have? should i go back into Commodo and change allowance? Where would i go to do so?
Shouldn’t be a problem; svchost is a trusted Microsoft program used by many applications, and outgoing UDPs are usually not harmful. Guess is that since you were not online, something in your system was sending out a DHCP broadcast (UDP to port 67 IP 255.255.255.255) to try and get an internet connection or something similar.