[Snort-users] HP Jetdirect Printers and portscans

Joe McAlerney joey at ...47...
Fri Jun 29 13:12:03 EDT 2001


Hello Paul,

You could add them to the portscan-ignorehosts list, or raise your
threshold a bit.  10 connections in 20 seconds seems a bit low.  It
seems web browsing to pages with 10 or more banner adds would set that
off as well.

-Joe M.

-- 
|   Joe McAlerney     joey at ...155...   |
| Silicon Defense - Technical Support for Snort |
|       http://www.silicondefense.com/          |
+--                                           --+

Paul Asadoorian wrote:
> 
> I am logging all my HP JetDirect printers (we have many, like 100's) in
> the portscan module:
> 
> Jun 29 11:29:17 MY.NET.51.32:161 -> MY.NET.19.248:3649 UDP
> Jun 29 11:29:17 MY.NET.51.32:161 -> MY.NET.19.248:3650 UDP
> Jun 29 11:29:17 MY.NET.51.32:161 -> MY.NET.19.248:3651 UDP
> Jun 29 11:29:17 MY.NET.51.32:161 -> MY.NET.19.248:3652 UDP
> Jun 29 11:29:17 MY.NET.51.32:161 -> MY.NET.19.248:3653 UDP
> Jun 29 11:29:17 MY.NET.51.32:161 -> MY.NET.19.248:3654 UDP
> Jun 29 11:29:17 MY.NET.51.32:161 -> MY.NET.19.248:3655 UDP
> Jun 29 11:29:17 MY.NET.51.32:161 -> MY.NET.19.248:3656 UDP
> Jun 29 11:29:17 MY.NET.51.32:161 -> MY.NET.19.248:3657 UDP
> Jun 29 11:29:17 MY.NET.51.32:161 -> MY.NET.19.248:3658 UDP
> Jun 29 11:29:17 MY.NET.51.32:161 -> MY.NET.19.248:3659 UDP
> Jun 29 11:29:18 MY.NET.51.32:161 -> MY.NET.19.248:3660 UDP
> Jun 29 11:29:18 MY.NET.51.32:161 -> MY.NET.19.248:3661 UDP
> Jun 29 11:29:18 MY.NET.51.32:161 -> MY.NET.19.248:3662 UDP
> Jun 29 11:29:18 MY.NET.51.32:161 -> MY.NET.19.248:3663 UDP
> Jun 29 11:29:18 MY.NET.51.32:161 -> MY.NET.19.248:3665 UDP
> Jun 29 11:29:18 MY.NET.51.32:161 -> MY.NET.19.248:3666 UDP
> Jun 29 11:29:18 MY.NET.51.32:161 -> MY.NET.19.248:3667 UDP
> Jun 29 11:29:18 MY.NET.51.32:161 -> MY.NET.19.248:3668 UDP
> Jun 29 11:29:18 MY.NET.51.32:161 -> MY.NET.19.248:3670 UDP
> Jun 29 11:29:27 MY.NET.51.32:161 -> MY.NET.19.248:3720 UDP
> 
> My portscan settings are as follows:
> 
>    preprocessor portscan: $HOME_NET 10 20 portscan.log
> 
> Any help is greatly appreciated...
> 
> BTW:  MY.NET.51.32 is a Jet Direct Print Server and MY.NET.19.248 is a
> Novell Server
> 
> --
> Paul Asadoorian, GCIA
> 
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