[63250] in North American Network Operators' Group
Re: ICMP Blocking Woes
daemon@ATHENA.MIT.EDU (Sean Donelan)
Thu Oct 2 02:17:07 2003
Date: Thu, 2 Oct 2003 02:16:36 -0400 (EDT)
From: Sean Donelan <sean@donelan.com>
To: nanog@merit.edu
In-Reply-To: <20030929164314.54160.qmail@web60201.mail.yahoo.com>
Errors-To: owner-nanog-outgoing@merit.edu
Various ISPs have been trying lots of different ICMP filters. You can
see some of the impact on the Internet average graphs from XAffire.
http://www.xaffire.com/press/ea/EA20030902_images?rf=EM005
Xaffire/Matrix Systems apparently used ping packets that were the
same size as those being filtered by some ISPs. According to Xaffire
service providers implementing filters included Cable & Wireless and
Level 3.
