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Network Security Snort-Users
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RE: [Snort-users] duplicate entry in DB (not the ACID problem)

Subject: RE: [Snort-users] duplicate entry in DB (not the ACID problem)
Date: Tue, 29 Mar 2005 16:20:48 -0500
For curiosity... are there any benefits to forward the packets back out onto 
the same ethernet segment? or is it a misconfiguration?
Also, I suppose a reflection of packets would result in a different timestamp, 
wouldn't it?

Hin

"Briggs, Bruce" <Bruce.Briggs@suny.edu> wrote:

Are they for the same sensor ID?
If so, possibly something is reflecting these packets back out on your
monitored Ethernet segment again.
One way this could happen is from a router/routing switch which gets
these packets forwarded in from some other device and then the router
forwards those packets back out onto the same Ethernet segment.

Bruce

-----Original Message-----
From: snort-users-admin@lists.sourceforge.net
[mailto:snort-users-admin@lists.sourceforge.net] On Behalf Of Hin
Sent: Tuesday, March 29, 2005 1:17 PM
To: snort-users@lists.sourceforge.net
Subject: [Snort-users] duplicate entry in DB (not the ACID problem)

This is really devastating. I have received multiple identicle entries
of the same event in the DB. These identicle entries has the same pay
load, same src/dest ip, exact same time etc. The only difference is the
event ID. This is not the duplicate key entry error in ACID. I have
about 90% of my alerts receiving multiple entries, and I can't find any
common grounds among alerts receiving multiple entries vs unique entry.
I have also make sure only 1 instance of Snort is running on my sensor.
Any suggestion would be appreciated.

Hin

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