Re: DNS Amplification attack?

Wil Schultz wrote:

Anyone else noticing "." requests coming in to your DNS servers?

http://isc.sans.org/diary.html?storyid=5713

I'm seeing them coming from the following addresses in my ns server logs.

69.50.142.110 69.50.142.11 76.9.16.171 66.230.128.15 66.230.160.1

We're also seeing a great number of these, but the idiots spoofing the queries are hitting several non-recursive nameservers we host - and only generating 59-byte "REFUSED" replies. Looks like they probably just grabbed a bunch of DNS hosts out of WHOIS and hoped that they were recursive resolvers. -- Kameron Gasso | Senior Systems Administrator | visp.net Direct: 541-955-6903 | Fax: 541-471-0821