Westermo MDI-112-F4G - Manual (Page 114)

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4.9.2 SNMP V3 Profile
SNMP v3 can provide more security functions when the user performs remote
management through SNMP protocol. It delivers SNMP information to the
administrator with user authentication; all of data between the switch and the
administrator are encrypted to ensure secure communication.
Security Level: Here the user can select the following levels of security: None,
User Authentication, and Authentication with privacy.
Authentication Protocol: Here the user can select either MD5 (Message-Digest
algorithm 5) or SHA (Secure Hash Algorithm). MD5 is a widely used cryptographic
hash function with a 128-bit hash value. SHA (Secure Hash Algorithm) hash