[ECOS] SNMP authentication

[Andrew Lunn]

> I'm performing some tests with the snmpping test application
> (packages\net\snmp\agent\current\tests\snmpping.c).  It seems it
> does not implement any form of authentication. I'm using the Loriot
> 1.00 SNMP Manager (www.llecointe.com) to query the board running
> eCos, but it does not matter the community I specify: I can retrieve
> the managed objects anyway.

> How to force the check against the community specified in the PDU?
> Is it possible to change the communities at run-time?

The snmp agent does not perform any authentication. The infrastructure
is there to do it thought if you dig around in the code. Its something
i once looked at, but did not use in the end. If i remember correctly,
there is an authentication call back and you just have to provide a
function to do the authentication. 

         Andrew

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