Simple Network Management Protocol

SNMP

SNMP is among the blackest of magical arts.

v3 User Management

Create

net-snmp-create-v3-user -a <authmode> -A <authpass> -x <encrmode> -X <encrpass> <firstuser>
net-snmp-create-v3-user -a SHA-512 -A 12345678 -x AES128 -X 12345678 default

Clone

snmpusm -v3 -l priv -u <firstuser> -a <authmode> -A <authpass> -x <encrmode> -X <encrpass> localhost create <template>
snmpusm -v3 -l priv -u default -x SHA-512 -X 12345678 -a AES128 -A 12345678 localhost create template

snmpusm -v3 -l priv -u <template> -a <authmode> -A <authpass> -x <encrmode> -X <encrpass> localhost create <newuser> <clonefrom>
snmpusm -v3 -l priv -u template -x SHA-512 -X 12345678 -a AES128 -A 12345678 localhost create newuser template

Test

Add new users to /etc/snmp/snmpd.conf:
rouser <username>
rwuser <username>
snmpstatus -v3 -l priv -u <username> -a <authmode> -A <authpass> -x <encrmode> -X <encrpass> localhost

Change Passwords

Auth:
snmpusm -v3 -l priv -u <user> -a <authmode> -A <authpass> -x <encrmode> -X <encrpass> -Ca localhost passwd <oldauthpass> <newauthpass> <user>
Encr:
snmpusm -v3 -l priv -u <user> -a <authmode> -A <authpass> -x <encrmode> -X <encrpass> -Cx localhost passwd <oldencrpass> <newencrpass> <user>

Delete

snmpusm [auth options] localhost delete <targetuser>

Changes are not committed until clean restart or SIGHUP!