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Date:      Mon, 27 Jan 2003 11:04:05 -0500
From:      Chuck Swiger <cswiger@mac.com>
To:        freebsd-questions@FreeBSD.ORG
Subject:   Re: snmp probe?
Message-ID:  <3E355875.5000106@mac.com>
In-Reply-To: <DAV67gCVmRDgcFObuIh00017bf0@hotmail.com>
References:  <DAV67gCVmRDgcFObuIh00017bf0@hotmail.com>

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Kenzo wrote:
[ ... ]
> portsentry[236]: attackalert: Connect from host: 10.x.x.x/10.x.x.x to UDP
> port: 161
> 
> That's the snmp port. the address that it's comming from is just a
> workstation. Now why would a regular workstation probe me on the snmp port?

A human programmed it to do so, most likely.

> What could it be?

If you tell us what OS and software the workstation is running, we could 
probably make more useful suggestions.

> Is it a program on the computer trying to look for a device on the network
> like a jetdirect?

That's very probable.

> Or virus, trojan trying to spread?"

Much less likely, but still possible, I guess.

> I guess I just want to know why it's doing this, and how to prevent it.

Disconnect the workstation from the network?
Configure the workstation to perform packet filtering of 168/169?
Determine which software is causing the and change it?

-Chuck


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