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TWC (AS11351) blocking all NTP?

Subject: TWC (AS11351) blocking all NTP?
From: nanog at deman.com (Michael DeMan)
Date: Sun, 2 Feb 2014 21:45:50 -0800
In-reply-to: <[email protected]>
References: <[email protected]>

The recently publicized mechanism to leverage NTP servers for amplified DoS attacks is seriously effective.
I had a friend who had a local ISP affected by this Thursday and also another case where just two asterisk servers saturated a 100mbps link to the point of unusability.
Once more - this exploit is seriously effective at using bandwidth by reflection.

Follow-Ups:
- TWC (AS11351) blocking all NTP?
  - From: rdobbins at arbor.net (Dobbins, Roland)
- TWC (AS11351) blocking all NTP?
  - From: jared at puck.nether.net (Jared Mauch)

References:
- TWC (AS11351) blocking all NTP?
  - From: johnl at iecc.com (John Levine)

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