[38231] in North American Network Operators' Group

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Re: engineering --> ddos and flooding

daemon@ATHENA.MIT.EDU (Jim Shankland)
Fri Jun 1 11:41:43 2001

Date: Fri, 1 Jun 2001 08:44:19 -0700
Message-Id: <200106011544.IAA03761@ndk.shankland.org>
From: Jim Shankland <nanog@shankland.org>
To: Dan Foster <dsf@frontiernet.net>,
	Andrew Dorsett <zerocool@netpath.net>
Cc: nanog@merit.edu
Errors-To: owner-nanog-outgoing@merit.edu


Dan Foster <dsf@frontiernet.net> writes:

> I, too, am much looking forward to the proposed standards to turn this
> kind of thing into a non-event. :)

Well, look no further than here, for your prayers are answered:

	On any connection to an end-user, ISPs shall forward only
	packets with source addresses assigned to that end-user by
	the ISP.  Exceptions can be made for multi-homed
	end-users: e.g., if an end-user has 1.2.3.0/24 from ISP A,
	and 5.6.7.0/24 from ISP B, each ISP may choose to accept
	packets with source addresses from the block assigned by
	the other ISP, by prior arrangement with the end-user and
	the other ISP.

Now, if you're looking forward to the *implementation* of this
proposed standard, you had best be looking through a very strong
telescope.  It will happen some time after the last open SMTP relay
on the Internet is secured :-(.

Jim Shankland

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