BCP38 thread 93,871,738,435 + SPF
ge at linuxbox.org
Sat Oct 28 05:52:37 UTC 2006
On Fri, 27 Oct 2006, Douglas Otis wrote:
> As Steve already pointed out, BCP38 is not a complete solution. Not
> only does SPF prevent the source of a Botnet attack from being
> detected, it also enables significantly greater amplification than
> might be achieved with a spoofed source DNS reflective attack. In
> addition, the Botnet resources are not wasted, as their spam is still
> being delivered. This aspect alone dangerously changes the costs
> related to such attacks. It seems wholly imprudent not to consider
> SPF in the same discussion.
Doug, I wonder, HOW do you intend / do track down the source of a botnet
attack? I know how I and others do it. There are three approaches which
fork everywhere on an expression tree.
If you believe SPF prevents you from doing it, can you elaborate how?
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