Encryption and authentication algorithms used in IPSec to guarantee packet transmission security on the USG2000 and USG5000 series

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Encryption algorithm AES and authentication algorithms SHA2-256, SHA2-384, and SHA2-512 are recommended to improve packet transmission security, whereas encryption algorithms DES and 3DES and authentication algorithms MD5 and SHA-1 are not recommended.

Other related questions:
Encryption and authentication algorithms used in IPSec to guarantee packet transmission security on the USG9000 series
Encryption algorithm AES and authentication algorithms SHA2-256, SHA2-384, and SHA2-512 are recommended to improve packet transmission security, whereas encryption algorithms DES and 3DES and authentication algorithms MD5 and SHA-1 are not recommended.

Encryption and authentication algorithms used in IPSec to guarantee packet transmission security on the USG6000 series
Encryption algorithm AES and authentication algorithms SHA2-256, SHA2-384, and SHA2-512 are recommended to improve packet transmission security, whereas encryption algorithms DES and 3DES and authentication algorithms MD5 and SHA-1 are not recommended.

Common symmetric encryption algorithms used in IPSec on the USG2000 and USG5000 series
Common symmetric encryption algorithms include DES, 3DES, AES, and Chinese encryption algorithm.

Common authentication algorithms used in IPSec on the USG2000 and USG5000 series
GRE can encapsulate multicast packets into unicast packets, but cannot encrypt packets.

IPSec security services on the USG2000 and USG5000 series
Security services provided by IPSec include user data encryption, data integrity authentication, data origin authentication, and anti-replay.

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