RE: War Dial on my PBX

From: Cotter, Joe <jcotter(at)everestusa.com>
Date: Wed Jun 25 2003 - 08:04:12 EDT

I would think the first thing to do is contact your local telco. You should work with them to determine who this is. They should be able to figure out who is initiating this attack (ANI or otherwise). It could be as harmless as someone having a misconfigured telemarketing system or a fax spammer looking for places to send junk. But I would START with your local telco.

-Joe

-----Original Message-----
From: David Barnett [mailto:dbarn064@earthlink.net] Sent: Tuesday, June 24, 2003 5:41 PM
To: incidents@securityfocus.com
Subject: War Dial on my PBX

My company's PBX system (Nortel Meridien) is getting hammered. All our

DIDs are getting hit. Aside from disabling trunk to trunk, what could I do

to help mitigate this problem. Another office last year was hit and

through the voice mail system someone was able to make $25,000 worth of

calls in a day. This was another system though.

Any help is much appreciated.

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Attend the Black Hat Briefings & Training, July 28 - 31 in Las Vegas, the world's premier technical IT security event! 10 tracks, 15 training sessions, 1,800 delegates from 30 nations including all of the top experts, from CSO's to
"underground" security specialists. See for yourself what the buzz is about!
Early-bird registration ends July 3. This event will sell out. www.blackhat.com

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Received on Wed Jun 25 12:30:02 2003