[130582] in North American Network Operators' Group
RE: Scam telemarketers spoofing our NOC phone number for callerid
daemon@ATHENA.MIT.EDU (Jon Lewis)
Wed Oct 6 11:34:06 2010
Date: Wed, 6 Oct 2010 11:33:48 -0400 (EDT)
From: Jon Lewis <jlewis@lewis.org>
To: Matthew Huff <mhuff@ox.com>
In-Reply-To: <483E6B0272B0284BA86D7596C40D29F9E2C7B80772@PUR-EXCH07.ox.com>
Cc: "'\(nanog@nanog.org\)'" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Wed, 6 Oct 2010, Matthew Huff wrote:
> Our system is PRI based, not sip.
PRI for origination and termination...but what are your phones? Old
school or VOIP/SIP? If your phone system supports SIP clients, it really
ought to be IP restricted to only allow your phones access, or use
something like fail2ban to stop the SIP scanners from eventually gaining
access.
----------------------------------------------------------------------
Jon Lewis, MCP :) | I route
Senior Network Engineer | therefore you are
Atlantic Net |
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