Ceton InfiniTV

Hello, I've had problems with the Norton firewall preventing my computer from detecting my CableCARD that I use with my Ceton InfiniTV 4.  Support services helped out and got it so the CableCARD is now detected.  However, they added one Traffic Rule  - and I'm not sure if I'm still protected.  

The new Traffic Rule allows "Direction: In/Out, Computer: Any, Communications: Any, Protocol: All".  This seems to me like it doesn't block anything anymore, but I'm not sure (I didn't have a chance to ask the support tech while they were online).  Am I being overly concerned?  Thanks,  Vincem2