bugtraq - Re: recursive DNS servers DDoS as a growing DDoS problem

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Tue, 14 Mar 2006 06:52:37 -0500
From: Robert Story <rstory-l@...6.revelstone.com>
To: "Ventsislav Genchev" <vigour1@...il.com>
Cc: bugtraq@...urityfocus.com
Subject: Re: recursive DNS servers DDoS as a growing DDoS problem

On Tue, 7 Mar 2006 19:26:19 +0200 Ventsislav wrote:
VG> Are you sure about that amplification process??

Yes.

VG> In the scenario you describe, I cannot see any actual amplification...

The amplification isn't in the number of hosts responding, but in packet size.
A very small DNS request packet results in a huge response packet.