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#3: logCriticalCategory administrative(3)
#4: logCriticalID 110
#5: logCriticalMessageNumeric NULL
#6: logCriticalMessageString Critically high disk utilization - disk utilization is at 90-100% of
capacity.
SNMPv3
The SNMPv3 RFCs do not specify a mechanism for creating the initial SNMPv3 account. The initial account creation
is left to the developer. Users can create the initial account and add it to the PSA using one of two methods: using
the web interface (covered in this document) or using SNMP (intended for use by other applications and not covered
in this document).
SNMPv3 security relies upon the creation of two separate keys: one for encryption and the other for authentication.
The keys are hex strings. To make hex strings easy to remember, two different algorithms for turning passwords
into keys were defined for use: HMAC-MD5-96 and HMAC-SHA-96. Once the key is generated from the passwords,
the key can be localized to a specific SNMP agent by combining the key with the SNMP agent's engine ID and then
by running a hashing algorithm on the combined pair. The following flowchart illustrates this.