Incoming or Outgoing condition may not correctly trigger in UDP firewall rules in Symantec Endpoint Protection (SEP).
For example, an Outgoing rule may be triggered by Incoming UDP traffic, and vice-versa.
SEP 14
Windows
This issue is fixed in Symantec Endpoint Protection 14.2. For information on how to obtain the latest build of Symantec Endpoint Protection, see Download the latest version of Symantec Endpoint Protection