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AW: [Full-Disclosure] short Blaster propagation algorithm analysis
- To: marc@eeye.com, full-disclosure@lists.netsys.com
- Subject: AW: [Full-Disclosure] short Blaster propagation algorithm analysis
- From: vogt@hansenet.com
- Date: Thu, 14 Aug 2003 13:23:00 +0200
> "* It uses a "choose random IP, then scan sequentially from there"
> algorithm"
>
> It is not always a random IP that is chosen. Each time a host
> is infected,
> there is a 40% chance that it will begin at the first address
> of its "Class
> C"-size subnet (x.x.x.0), and a 60% chance that it will start at a
> completely random IP address with the last octet set to 0
> ([1-254].[0-253].[0-253].0).
So it does have a local preference like the later CR. This does
affect propagation speed, especially during the early phase.
Thanks for the update, I'll see that I include it.
Tom Vogt
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