The firewall allows the incoming network traffic and outgoing network traffic that you specify in the firewall policy. The Symantec Endpoint Protection firewall policy contains rules and protection settings, most of which you can enable or disable and configure.
Table: Optional tasks to manage firewall protection
Read about firewall protection
Before you configure your firewall protection, you should familiarize yourself with the firewall.
Firewall rules are the policy components that control how the firewall protects client computers from malicious attacks.
The default firewall policy contains default firewall rules. And when you create a new policy, Symantec Endpoint Protection provides default firewall rules. However, you can modify the default rules or create new ones.