HI,

Note that if the wall clock goes backwards, the AGENT MUST
increment agentBoots! Otherwise, can have a replay attack!

On Fri, 14 Jan 2005, Mike Ferrara wrote:

> With NetSNMP as a client and SNMP Research as a server, we've noticed 
> out-of-time window errors on the client side after large abrupt 
> (negative) time changes. Both client and server run on the same 
> machine.  If someone changes the system date backward by, say 3 days, 
> NetSNMP can no longer talk to the server.  In thinking about this, 
> doesn't it make sense for NetSNMP to calculate engine time from the 
> CLOCK_MONOTONIC clock (if available)?  That clock completely isolates 
> one from a user's capricious clock change.  Just a thought ...
> -Mike Ferrara
> [EMAIL PROTECTED]
> 
> PS - I've verified this problem with NetSNMP 5.0.8 - 5.2.0 using 
> perl-NetSNMP

Regards,
/david t. perkins



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