Craig Small via Net-snmp-coders <net-snmp-coders@lists.sourceforge.net>
writes:

> My understanding is the only way of adding the key is with the snmpusm
> command.  Except it doesn't work for me.

snmpusm is used to change a key, but isn't really doing DH for each
transaction after that.  It's still using a shared-secret.

(D)TLS support is available, however, for using certificates instead
which is a more modern cryptographic mechanism.

> $ snmpusm -v3 -u simon -l authPriv -a SHA1 -A simon-pass -x AES128 -X 
> simon-priv
> localhost changekey simon
> snmpusm:
> Can't get diffie-helman exchange from the agent
>   (maybe it doesn't support the SNMP-USM-DH-OBJECTS-MIB MIB)

That may have meant it wasn't complied in.  Make sure the
snmp-usm-dh-objects-mib module is complied into the agent.

-- 
Wes Hardaker
Please mail all replies to net-snmp-coders@lists.sourceforge.net


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