Item on Program Control list

Hi folks

I was looking at the list of Program Control items of my Norton Internet Security 2012 Firewall, and I noticed an item Called "System" which does not have a filepath associated with it unlike the other items on that list. It just says "System" twice. The rules for it, show "allow" for both inbound and outbound.

Is this a "normal" item, or not ?

 

Thank you in advance :smileyhappy: