Hello,
To disable the Network Threat Protection, you can try these -
Navigate to
HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\Symantec Endpoint Protection\SMC\smc_engine_status
If the value of smc_engine_status is "0" that means NTP is Disabled
If the value of smc_engine_status is "1" that means NTP is Enabled
OR
Disable Network Threat Protection access on SEP client.
Go to Specific group --> Policies --> Location specific setting --> Client user interface settings --> Edit settings --> Uncheck allow user to enable and disable firewall
Check on client, as you can see tab is grayed out.
OR
check this Article:
Symantec Endpoint Protection: How to remove Network Threat Protection and Email Tools through the Symantec Endpoint Protection Manager.
http://www.symantec.com/docs/TECH103055
Hope that helps!!