Why is implementing DPI signatures important for a cloud-gen firewall?

Implementing Deep Packet Inspection (DPI) signatures is crucial for a cloud-gen firewall primarily because it helps identify and block evasive applications. DPI analyzes the content of the data packets flowing through the firewall, not just the header information, which enables it to recognize specific application behavior and patterns. This capability is essential for detecting applications that may employ various techniques to avoid standard security measures. By identifying these evasive applications, the firewall can enforce appropriate security policies and ensure that only authorized applications access the network, ultimately enhancing overall network security and integrity.

The other choices, while relevant to network security in different contexts, do not directly address the specific importance of DPI signatures in a cloud-gen firewall. Therefore, they do not serve the primary purpose of DPI implementations effectively in this context.