On Fri, 13 Jun 2008 14:14:55 -0400 Jon Kibler <[EMAIL PROTECTED]> wrote:
> TCP is used for zone transfers. > If my server responded to TCP queries from anyone other than a secondary > server, I would be VERY concerned. I wouldn't be unless it looked like a DDoS - and it might for some that are seeing the results of a DNS-based DDoS mitigation device you or an upstream put in for the first time. These boxes force clients to switch over from UDP to TCP for queries when a well formed UDP DNS attack hits. John
