Solved

Urgent ! bind dns server being attacked

Posted on 2004-10-14
3
2,105 Views
Last Modified: 2010-08-05
Hi,

My server is down, there is no others alert msg in /var/log/messages,only ALOT of these msgs appeared(at below)

What wrong with my DNS, or some1 is DDOS attacking my dns?

So far, i only allow my server to do recursive lookup:
allow-recursion {
127.0.0.1;
xx.xx.xx.xx;

Seem like nothing wrong with my named.conf, is too many attack from different IPs, and is not feasible to block all the IPs..

Anyone can HELP.

Thanks man,
-Qaz


Oct 14 06:40:24 gs named[3152]: client 64.226.28.68#4902: query (cache) denied
Oct 14 06:40:24 gs named[3152]: client 207.155.252.95#1053: query (cache) denied
Oct 14 06:40:24 gs last message repeated 3 times
Oct 14 06:40:24 gs named[3152]: client 213.130.44.55#41880: query (cache) denied
Oct 14 06:40:24 gs named[3152]: client 207.155.252.95#1053: query (cache) denied
Oct 14 06:40:24 gs named[3152]: client 207.155.252.95#1053: query (cache) denied
Oct 14 06:40:24 gs named[3152]: client 209.63.205.1#1485: query (cache) denied
Oct 14 06:40:24 gs named[3152]: client 217.115.141.107#51230: query (cache) denied
Oct 14 06:40:25 gs named[3152]: client 195.94.80.1#53: query (cache) denied
Oct 14 06:40:25 gs named[3152]: client 213.130.44.55#41880: query (cache) denied
Oct 14 06:40:25 gs named[3152]: client 217.115.141.107#51230: query (cache) denied
Oct 14 06:40:25 gs named[3152]: client 195.94.80.1#53: query (cache) denied
Oct 14 06:40:26 gs named[3152]: client 213.130.44.55#41880: query (cache) denied
Oct 14 06:40:26 gs named[3152]: client 64.226.28.68#22864: query (cache) denied
Oct 14 06:40:26 gs named[3152]: client 64.226.28.68#23356: query (cache) denied
Oct 14 06:40:26 gs named[3152]: client 12.127.17.71#36702: query (cache) denied
Oct 14 06:40:26 gs named[3152]: client 64.226.28.68#47798: query (cache) denied
Oct 14 06:40:26 gs named[3152]: client 217.115.141.107#51230: query (cache) denied
Oct 14 06:40:26 gs named[3152]: client 12.8.14.153#18432: query (cache) denied
Oct 14 06:40:26 gs named[3152]: client 194.109.24.113#1525: query (cache) denied
Oct 14 06:40:26 gs named[3152]: client 195.94.80.1#53: query (cache) denied
Oct 14 06:40:26 gs named[3152]: client 194.109.22.38#4096: query (cache) denied
Oct 14 06:40:26 gs named[3152]: client 213.130.44.55#41880: query (cache) denied
Oct 14 06:40:27 gs named[3152]: client 209.220.225.42#3039: query (cache) denied
Oct 14 06:40:27 gs last message repeated 2 times
Oct 14 06:40:27 gs named[3152]: client 194.109.22.34#38983: query (cache) denied
Oct 14 06:40:27 gs named[3152]: client 217.115.141.107#51230: query (cache) denied
Oct 14 06:40:27 gs named[3152]: client 194.109.22.34#11651: query (cache) denied
Oct 14 06:40:27 gs named[3152]: client 195.94.80.1#53: query (cache) denied
0
Comment
Question by:qazakax
3 Comments
 
LVL 1

Accepted Solution

by:
bestondoa earned 25 total points
ID: 12398973
Hello,

Those messages are normal and indicate that those IPs are trying to use your DNS but are not allowed due to configuration options.

Is your DNS server for public use, or do you limit the usage to certain clients?

Cheers,

Bestondoa
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

rdate is a Linux command and the network time protocol for immediate date and time setup from another machine. The clocks are synchronized by entering rdate with the -s switch (command without switch just checks the time but does not set anything). …
If you have a server on collocation with the super-fast CPU, that doesn't mean that you get it running at full power. Here is a preamble. When doing inventory of Linux servers, that I'm administering, I've found that some of them are running on l…
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…

895 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now