When I try to log anything going through my system, I get all sorts of activity that I have no earthly idea what it is... but if I block it, there will be some app that suddenly stops working.
I am reticent to block all activity except for known ports, as a lot of today's software requires me to run the stuff open so they can communicate with their home base.
I would be in violation of the Digital Millennium Copyright Act if I were to reverse engineer the code to find out exactly what they wanted. So, in accordance of my understanding of the Terms of Compliance with the Digital Millennium Copyright Act, which was bought by the Copyright Holders, I run my wireless nodes that pass information subject to softwares governed by the DMCA wide open. I do not attempt to monitor, reverse engineer, or try to "break their codes". Like watching activity on the street, its not my issue with what other people are doing. Its been my experience that interfering in other people's doings is not very healthful.
The Copyright Industry has fought long and hard, spending countless resources to have law passed that makes ignorance of how one's stuff works as a condition of lawful compliance with their terms and conditions. We are now getting a lawfully compliant population who leaves every port on their system open because some copyright holder might want to use that port, closing it will cause the system to malfunction. Troubleshooting and repairing the malfunction is now defined by our Congress as being in violation of Copyright Law.
For my critical stuff, which I have not signed away any rights, I can still communicate securely, but for the commercial stuff, which I agreed to leave access wide open, I comply.
But as far as my wireless access points...
I HAVE NO EARTHLY IDEA WHAT IS GOING THROUGH IT.
Nor, do I feel I am lawfully allowed to know.
As far as I am concerned, I am running a public toilet.
Anyone is welcome as long as they don't come in and make a mess.