User defined settings - how to reverse deny access?

HI I have a MacBookPro and NIS 2011.

I'm trying to configure Back to my Mac (where I am accessing a remote mac). iCloud is ok with my configuration. However when I try to connect, I can't. I "disable connection blocking" and I able to use my remote mac with Back to my Mac.

There is a arecurrent entry in the firewall log prior to disabling connection blocking that maybe responsible.

It is "user-defined setting" denying incoming connection attempt (protocol - esp; port 10040. 

How do I reverse this user-defined setting?