I have observed that net-snmp does not support snmpCommunityTable of RFC
> 3584(SNMP-COMMUNITY-MIB), though the data related to this is maintained
> in local memory.
> Is there any particular reason that this is not supported. 

Because no-one has implemented this particular MIB.

The equivalent functionality (i.e. "com2sec" handling) was actually
written *before* the SNMP-COMMUNITY-MIB first appeared, and there
hasn't been a pressing need to re-work this to use the more standard
approach.   It's been on my list for a while, but other tasks have
tended to come first.

If you're in a position to address this, and can feed back the
necessary changes, we'd be delighted to incorporate them into the
main Net-SNMP code base.


> Please let me know if I am missing anything with related to dealing with
> snmpCommunityTable.

The main thing to realise is that the snmpCommunityTable covers slightly
*more* than the com2sec settings do - in particular a community string
will be mapped to a (name/engineID/context) triple rather than simply
a security name.
  And you'd have to use the snmpTargetTable (plus snmpCommunityTransportTag)
to handle the source address filtering.

But other than that, it shouldn't be too difficult to implement.

Dave



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