RE: Encrypting trapsess entries in snmpd.conf

I think that there's still a potential bug here though.
create_user_from_session sets the storage type to read-only, but chances
are that the user was previously not read-only if it was read from
persistent config.
I don't know if this would then prevent the usm details being changed
for the user via the usm mib (not sure that the agent code actually
checks whether a read-only user is being updated).
Perhaps it should only set the storage only if it just created the user
and leave it as it is if not.


-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of
Michael Kirkham
Sent: 23 January 2007 11:45
To: [email protected]
Subject: Re: Encrypting trapsess entries in snmpd.conf


I'd say bug, because it also causes users created via SNMP to receive 
SNMPv3 informs via the target/notification MIBs to be deleted on reboot,

and readOnly (according to the StorageType TC) should be saved to 
persistent storage, unlike nonVolatile.  I submitted a patch (1642071) 
about this yesterday:

http://sourceforge.net/tracker/index.php?func=detail&aid=1642071&group_i
d=12694&atid=312694

> This doesn't quite work as you would hope though.
> 
> While the user information is used to send the trap, the act of
> configuring the "trapsess" directive causes create_user_from_session
> to set the storage type for the user to "read-only".
> When snmpd is stopped and it writes the persistent snmpd.conf
> file, it then does not write the information back for this user,
> since it ignores those entries that are not non-volatile (in
> usm_save_users_from_list) - which this entry was, until messed
> about with by create_user_from_session.
> So, the next time you start snmpd, it stops working...
> 
> Bug? Feature? Other?
> 
> Phil

--
Michael Kirkham
President & CEO
Muonics, Inc.
http://www.muonics.com/


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