Which protocol is supported by DPI-SSL?

DPI-SSL, or Deep Packet Inspection Secure Sockets Layer, is a technology used by SonicWall firewalls to inspect encrypted traffic for security threats. The correct answer, TLS 1.2, is significant because it represents a more secure and updated version of the Transport Layer Security protocol compared to its predecessors. TLS 1.2 enables stronger encryption algorithms and efficient performance enhancements, making it suitable for DPI-SSL operations.

TLS 1.2 was standardized to address vulnerabilities found in older protocols, ensuring that communications maintain confidentiality and integrity. The adoption of this protocol within DPI-SSL underlines the importance of utilizing current security standards to effectively analyze and manage encrypted traffic without compromising security.

In contrast, while TLS 1.1 is a predecessor to TLS 1.2, it is less secure and has been largely phased out in favor of TLS 1.2. SSL 3.0, although historically significant, is considered obsolete due to its various security flaws. DTLS 1.0 provides similar encryption capabilities as TLS for datagram protocols but is not the primary focus of DPI-SSL. Therefore, the selection of TLS 1.2 reinforces the firewall's ability to provide robust security in analyzing encrypted data flows.