The Definitions section of the Symantec Endpoint Protection Manager (SEPM) console is not updating unless the SEPM is closed and reopened.
Latest from Symantec: 07.03.2012 r35
Latest on Manager: 19.03.2012 r33
The proxy in this environment is "Not Stateful" and will keep a requested connection open for 30 minutes.
After the 30 minute timeout, and there are no more requests, the port is closed.
Symantec Endpoint Protection 11.x and 12.1
Windows Server OS