Which Security Configuration menu option is used to enable client DPI-SSL?

To enable client DPI-SSL (Deep Packet Inspection of SSL) on a SonicWall Firewall, the appropriate menu option is Decryption Services. This feature is crucial for inspecting and analyzing encrypted traffic that has been secured using SSL/TLS protocols. By enabling DPI-SSL under Decryption Services, the firewall can decrypt and inspect this traffic, allowing for enhanced security measures against potential threats hidden within encrypted communications.

When a firewall uses DPI-SSL, it essentially acts as a man-in-the-middle, where it decrypts the SSL traffic for inspection before re-encrypting it and sending it to the intended destination. This process is vital for identifying threats and ensuring that the traffic complies with the organization's security policies.

The other options relate to different aspects of firewall configuration. Encryption Services focuses on the setup and use of encryption protocols, while Traffic Control pertains to managing and prioritizing network traffic rather than specifically handling SSL inspection. Network Protection generally encompasses a broader range of security features aimed at overall network safety but does not specifically address the needs for DPI-SSL functionality. Hence, the Decryption Services menu option stands out as the correct choice for enabling client DPI-SSL.