nanog mailing list archives
DNS Flood
From: "Jamie D." <jamie () cerf net>
Date: Thu, 12 Aug 1999 12:19:31 -0700
Are there any other ISP's who are experiencing DNS floods, specifically I am looking for traffic destined for (or coming from) the following IPs
199.108.32.203 216.15.178.201 129.180.11.17 216.41.23.68 208.235.124.20 203.251.77.1
It appears someone is running a script that is using these nameservers, as well as the name servers of other educational facilities, to do a lookup on mulitple servers in the amplitude of 3-4 a second. This activity has been happening for the past 3 weeks, we have null routed this traffic on our backbone, but it still shows up in Cache flow. This traffic actually saturated our customer's pipe as well as increased the load on our backbone router. If anyone has seen anything at all like that, (specifically people from UU.net or AT&T Worldnet) please lets band together and find the person doing this. Thanks Jamie D. | noc () cerf net AT&T CERFnet| Network Analyst 1-888-237-3638 opt 2 opt 2
Current thread:
- DNS Flood Jamie D. (Aug 12)
- Re: DNS Flood Henry R. Linneweh (Aug 12)
- Re: DNS Flood Vui Le (Aug 12)
- <Possible follow-ups>
- Re: DNS Flood prue (Aug 12)