[EXTERNAL] VoIP Provider DDoSes

Tue Sep 21 21:59:06 UTC 2021

Most of the larger DDoS mitigation appliances can block malformed SIP traffic and also can block volumetric/state exhaustion UDP floods.  A lot of VoIP companies have Session Border Controllers (SBCs) to protect public facing VoIP services.  SBCs are more application aware.  Kind of like a proxy based firewall just for VoIP.

-Rich

From: NANOG <nanog-bounces+rich.compton=charter.com at nanog.org> on behalf of Mike Hammett <nanog at ics-il.net>
Date: Tuesday, September 21, 2021 at 3:31 PM
To: NANOG list <nanog at nanog.org>
Subject: [EXTERNAL] VoIP Provider DDoSes

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As many may know, a particular VoIP supplier is suffering a DDoS. https://twitter.com/voipms

Are your garden variety DDoS mitigation platforms or services equipped to handle DDoSes of VoIP services? What nuances does one have to be cognizant of? A WAF doesn't mean much to SIP, IAX2, RTP, etc.

-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com

Midwest-IX
http://www.midwest-ix.com
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