Hello,
What version of SEP 12.1 are you running?
Check these Articles:
Windows 7 Firewall indicate that "These Settings are being managed by vendor application Symantec Endpoint Protection", even when Symantec Endpoint Protection (SEP) 11.0 Network Threat Protection (NTP) is not installed.
https://www-secure.symantec.com/connect/articles/windows-7-firewall-indicate-these-settings-are-being-managed-vendor-application-symantec-en
Advanced Settings for Windows 7 Firewall indicate that it is on, even when Symantec Endpoint Protection (SEP) Network Threat Protection (NTP) is installed.
http://www.symantec.com/docs/TECH123729
The behavior of Windows 7 in regards to 3rd party firewalls (such as SEP) differs slightly than previous versions of Windows. In Windows 7, Microsoft changed Security Center to Action Center. In Action Center, a more universal interface was created for protection technology (Firewall, Antivirus, etc). Windows Firewall is indeed turned off when SEP NTP is enabled, indicated by the Installed Firewall list, as well as the General Firewall status section indicating that firewall rules are being managed by SEP. To verify the true Windows Firewall status: Open Action Center -> Expand "Security". Find line item "Network Firewall On". Below is a link "View installed firewall programs": Symantec Endpoint Protection is listed as installed and On, Windows firewall is listed as installed and Off."
Hope this clarifies this for you.