nanog mailing list archives
Re: DNS problems to RoadRunner - tcp vs udp
From: John Kristoff <jtk () ultradns net>
Date: Fri, 13 Jun 2008 14:05:44 -0500
On Fri, 13 Jun 2008 14:14:55 -0400 Jon Kibler <Jon.Kibler () aset com> 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
Current thread:
- Re: DNS problems to RoadRunner - tcp vs udp, (continued)
- Re: DNS problems to RoadRunner - tcp vs udp Jon Kibler (Jun 13)
- RE: DNS problems to RoadRunner - tcp vs udp Tomas L. Byrnes (Jun 13)
- Re: DNS problems to RoadRunner - tcp vs udp Justin Shore (Jun 13)
- Re: DNS problems to RoadRunner - tcp vs udp Justin Shore (Jun 13)
- Re: DNS problems to RoadRunner - tcp vs udp Robert E. Seastrom (Jun 14)
- Re: DNS problems to RoadRunner - tcp vs udp Simon Leinen (Jun 14)
- Re: DNS problems to RoadRunner - tcp vs udp Randy Bush (Jun 14)
- Re: DNS problems to RoadRunner - tcp vs udp Jon Kibler (Jun 13)
- Re: DNS problems to RoadRunner - tcp vs udp Scott McGrath (Jun 14)
- Re: DNS problems to RoadRunner - tcp vs udp Jeroen Massar (Jun 14)
- Re: DNS problems to RoadRunner - tcp vs udp Scott McGrath (Jun 14)
- Re: DNS problems to RoadRunner - tcp vs udp Jeroen Massar (Jun 14)
- Re: DNS problems to RoadRunner - tcp vs udp Sean Donelan (Jun 14)
- Re: DNS problems to RoadRunner - tcp vs udp Mike Lewinski (Jun 14)
- Re: DNS problems to RoadRunner - tcp vs udp Nathan Ward (Jun 14)
- Re: DNS problems to RoadRunner - tcp vs udp Mark Andrews (Jun 15)
- Re: DNS problems to RoadRunner - tcp vs udp Michael Sinatra (Jun 15)