I found this forum after I did a google search for "insightbb block port".
Beginning today, I noticed that I am no longer able to connect with highID with my emule client. Using the Test Port diagnostic in the Emule Connection Menu, I am no longer able to get traffic through the ports that I have opened and forwarded to this machine. I tried changing the port numbers and still no luck.
It definitely seems that the problem is not with my set-up and something that insightbb has changed in the past few days. Although emule will still work with lowID (meaning that other clients can't directly connect to you), it severely degrades performance. Not good!
I'm very disappointed in insightbb's decision to block p2p traffic, especially since I use emule infrequently.
Keep us posted in ways to get around this filter. Also, I wonder if insight will have any success in blocking Skype as well.
Thanks