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Deep Packet Inspection - Secure Socket Layer (DPI-SSL)
What better way to launch a successful attack than to hide it from discovery? Smart cybercriminals mask their attacks inside traffic encrypted by SSL/TLS standards. This helps them sneak malware past a single-layer network defense.
SonicWall DPI-SSL provides additional security, application control, and data leakage prevention for analyzing encrypted traffic. It enables the decryption of encrypted traffic to look for hidden threats. It extends SonicWall's patented Reassembly-Free Deep Packet Inspection® (RFDPI) technology to allow inspection of encrypted HTTPS traffic and other SSL-based traffic. The full-stack-stream inspection technology of RFDPI scans SSL-encrypted traffic (including HTTPS, SMTPS, NNTPS, LDAPS, FTPS, TelnetS, IMAPS, IRCS, and POPS), regardless of the port being used.
DPI-SSL by decrypting transparently, scanning for threats, and then re-encrypting and sent along to its destination if no threats or vulnerabilities are found. The SSL traffic is decrypted transparently, scanned for threats, and then re-encrypted and sent along to its destination if no threats or vulnerabilities are found.
Be sure to ask whether the vendor offers full-proxy or artifact-based inspection. The former is expensive and slows performance, while artifactbased technology can stop more attacks without impacting speeds.
In Brief
DPISSL decrypts the SSL traffic at the gateway and scans it for threats. If it is safe, it is re-encrypted and forwarded to the client.
Secure protocols (regardless of actual port number) include:
HTTPS, SMTPS, NNTPS, LDAPS, FTPS, TelnetS, IMAPS, IRCS, POPS