* NTP having the firewall component and teefer2.sys is the driver file for the firewall component
* Teefer driver is upgraded on 11.0.7 for the network based issues with SEP firewall
* Windows 7 SP1 and above and Windows 2008 servers SP1 and above is compatible only with SEP 11.0.7 and SEP 12.1
Release notes for Endpoint Protection 11
http://www.symantec.com/docs/TECH103087
Installing Network Threat Protection (NTP) causes loss in communication
Fix ID: 2575843
Symptom: Installing SEP with NTP causes the client to lose all communications with SEPM. All other network traffic remains unaffected.
Solution: Fixed the issue where a needed attribute was missing from a specific dll.
Network connections to an application server are disconnected
Fix ID: 2214576
Symptom: Clients running an application from an application server disconnect after upgrading to Symantec Endpoint Protection 11.0 RU5.
Solution: The Teefer2 driver was optimized to avoid a FIFO queue bottleneck when processing SMB2 packets.