nanog mailing list archives
Re: DNS Flood
From: Vui Le <vuile () laihwa es net>
Date: Thu, 12 Aug 1999 14:11:51 -0700
Hi Jamie, We are seeing it as well (same spoofed addresses). In our case, we tracked it to NAPNET @ AADS-NAP. Folks from NAPNET are looking at it but we have not heard back from them. - Vui
Are there any other ISP's who are experiencing DNS floods, specifically I am looking for traffic destined for (or coming from) the following IPs199.108.32.203 216.15.178.201 129.180.11.17 216.41.23.68 208.235.124.20 203.251.77.1It 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
======================================================================== Vui Q. Le Phone: (510) 495-2204 Energy Sciences Network (ESnet) Fax : (510) 486-6712 Network Engineering Services Group Email: vuile () es net Lawrence Berkeley National Laboratory URL : http://www.es.net/ ========================================================================
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)