RE: unknown encryptionPDU

	[Good ideas to the list, please.  :-)]

> -----Original Message-----
> From: Giany [mailto:[email protected]] 
> Sent: Thursday, June 18, 2009 5:52 PM
> To: Mike Ayers
> Subject: Re: unknown encryptionPDU
> 
> 
> 
> On Thu, Jun 18, 2009 at 5:11 PM, Mike Ayers 
> <[email protected]> wrote:
> 
> 
> 	> From: sanjaykumar [mailto:[email protected]]
> 	> Sent: Wednesday, June 17, 2009 2:20 AM
> 	
> 
> 	>        I trying to  send the inform request as AUTHPRIV
> 	> but I am getting unknown encryptionPDU in CAPTURE ...
> 	
> 	
> 	       If I understand correctly, your notification 
> receiver does not recognize the encryption algorithm in use.
> 	
> 
> 	>  When I sending the key I find the SEND key is currect.
> 	> As AUTHNOPRIV is wotking fine
> 	> So I am expecting some help where could we problem.
> 	>
> 	> CODE  in snmpusm.c where I find KEY IS CURRECT
> 	> I am using DES for encryption hence AES part I have disable.
> 	
> 	
> 	       I'd suggest leaving the agent code alone.  
> Here's a path to try:
> 	
> 	       1)  Send a v3 trap, not an inform.
> 	
> 	       2)  If you get success for (1), check your 
> users.  Informs are authenticated against the notification 
> receiver, not sender.
> 	
> 	       3)  If you get an unknown encryption error for 
> (1), try setting up snmptrapd (on the same host you are 
> generating traps from, if possible) and adding it to your 
> notification targets.
> 	
> 	       4)  If you get failure for (3), you are probably 
> making mistakes in your user configs.  Recheck them carefully.
> 	
> 	       5)  If you get success for (3), then your 
> receiver may not have encryption support - perhaps it was 
> compiled without encryption libraries?  Perhaps AES would work?!
> 	
> 	
> 	       HTH,
> 
> 
> If you are using Wireshark or tcpdump this means that  the 
> snmpv3 messages
> cannot be decoded by your capture program unless it knows the privKey.
> You can use this method to enable snmpv3 with wireshark:
> go to Edit->Preferences->Protocols->SNMP->User Table->Edit->New
>  and insert the SNMPv3 user informations
> 
> 
> 

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