On Tue, Apr 30, 2013 at 8:35 PM, Jared Mauch <jared@puck.nether.net> wrote:
Please provide advice and insights as well as directing customers to the openresolverproject.org website. We want to close these down, if you need an accurate list of IPs in your ASN, please email me and I can give you very accurate data.
I think that a public list of open-resolvers is probably overdue, and the only way to get them fixed. It is trivial to scan the entire IPv4 address space for DNS servers that do no throttling even without the resources of a malicious botnet. Smurf was only "fixed" because, as there were fewer networks not running `no ip directed-broadcast,` the remaining amplification sources were flooded with huge amounts of malicious traffic. The public list of smurf amplifiers turned out to be the only way to really deal with it. I predict the same will be true with DNS. -- Jeff S Wheeler <jsw@inconcepts.biz> Sr Network Operator / Innovative Network Concepts