RE: Problem trying to create SNMPv3 user with pre-generated MD5 key

	The "password" used in net-snmp is based upon the key localization algorithm as described in section 2.6 and appendix 2 of RFC 3414, which means that it is not a simple MD5 hash, so what you're trying won't work.

	If your user is secretive about thye password, I would suggest setting the initial password to some semi-secure password like "Test1234" and pointing them to the snmpusm manpage so they can change it to whatever they prefer.


	HTH,

Mike

P.S.  This type of secretiveness is difficul;t to maintain when using clear channels to encode the password!


> -----Original Message-----
> From: Kirill Mishustin [mailto:[email protected]]
> Sent: Thursday, September 03, 2009 9:32 PM
> To: [email protected]
> Subject: Problem trying to create SNMPv3 user with pre-generated MD5 key
> 
> Hello.
> 
>    We need to add SNMPv3 user. Password is unknown, we
> know only MD5-hash of his password. I'm trying this:
> User name: snmpuser
> Password: 11111111
> Password MD5 Hash : 1bbd886460827015e5d605ed44252251
> (Hash generated online at http://hash-it.net/)
> 
> So, I added this to /usr/local/share/snmp/snmpd.conf:
> rwuser snmpuser auth
> 
> And this to /var/net-snmp/snmpd.conf:
> createUser snmpuser MD5 -m
> 0x1bbd886460827015e5d605ed44252251
> 
> Agent replaced second string with his "ucd user" stuff.
> But when I try to make snmp request, I have authentication
> failed error.
> I tried replacing "-m" with "-l" in
> /var/net-snmp/snmpd.conf. Same result.
> 
> What's wrong?
> 
> Best regards,
> Kirill Mishustin
> 
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