[Webinar] Streamline your web hosting managementRegister Today

x
?
Solved

Disable DNS Lookup

Posted on 2008-10-19
3
Medium Priority
?
1,677 Views
Last Modified: 2013-12-16
Hi,

I am using vsftpd & experience high tarffic on udp port 53 which is DNS, I beleive this is when a log is writen to audit.log by the vsftpd. When i stop teh ftp server there is no more DNS traffic.
How can i disable the DNS lookup ? ther is no option through vsftpd & its not the syslog.
Can either be the PAM or some other OS options,

Danny
0
Comment
Question by:wefi
  • 2
3 Comments
 
LVL 3

Assisted Solution

by:leonjs
leonjs earned 800 total points
ID: 22753076
Quick question, are you running vsftpd on the inside network? Is it communicating with other machines in the inside network or is it communicating with machines outside the network.

If vsftpd is doing transactions with machines outside the network we can put a statement in the firewall to not all this kind of traffic from that host.

If the traffic is inside the network only in most cases it will never hit the firewall and you can make a similar change to your switches.

I am not familiar with vsftpd to say whether or not it has settings in the conf file for dns but i do think you could take out the nameservers in /etc/resolv.conf then this traffic will not be a issue anymore, assuiming this machine does not need dns at all.
0
 

Accepted Solution

by:
wefi earned 0 total points
ID: 22753108
Commenting out is a nic eworkaround which i can use but i was thinking there is a way to stop this.
I would need resolving at some point.

0
 

Author Comment

by:wefi
ID: 22753170
h
0

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

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

I have written articles previously comparing SARDU and YUMI.  I also included a couple of lines about Easy2boot (easy2boot.com).  I have now been using, and enjoying easy2boot as my sole multiboot utility for some years and realize that it deserves …
This article explains how to use the rsync command to create backups and sync data across hosts. Rsync is a very useful command that is often used to copy data, make backups, migrate hosts, and bridge the gap between site staging and production envi…
How to Install VMware Tools in Red Hat Enterprise Linux 6.4 (RHEL 6.4) Step-by-Step Tutorial
Michael from AdRem Software outlines event notifications and Automatic Corrective Actions in network monitoring. Automatic Corrective Actions are scripts, which can automatically run upon discovery of a certain undesirable condition in your network.…
Suggested Courses
Course of the Month9 days, 11 hours left to enroll

591 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