I downloaded the free one from Kerio a few months ago and it has been fine. I have run 'shieldUP' and it told me my PC was totaly secure. All of a sudden i have had these messages comming through.

Someone from 208.51.89.181, port 1027 wants to send UDP datagram to port 1027 owned by 'Distributed COM Services' on your computer.

c:\windows\system\lexpps.exe OR c:\windows\system\rpcss.exe

I dont mind the firewall letting me know about them as they are .exe files, BUT the question is that should they be allowed through or not as they are part of the window/system ?