Solved

Odd Event Logs, 'update 'adomain.com/IN' denied'

Posted on 2007-11-20
5
1,097 Views
Last Modified: 2011-10-03
Error             client 83.170.31.199#1130: update 'adomain.com/IN' denied
Error             client 83.170.31.199#1130: update 'adomain.com/IN' denied
Error             client 83.170.31.199#1025: update 'adomain.com/IN' denied

We host 'adomain.com' we seem to be getting the above errors regularly in the Event Application Log

It looks like there is a process making a DNS request to the server. Can we block or stop the request, ideally before it gets to the event log, as it does fill it with errors.

Cheers
Mike
Error 		client 83.170.31.199#1130: update 'adomain.com/IN' denied

Error 		client 83.170.31.199#1130: update 'adomain.com/IN' denied

Error 		client 83.170.31.199#1025: update 'adomain.com/IN' denied

Information 	client 83.170.31.203#2255: updating zone 'adomain.com/IN': update unsuccessful: pc-niknami.adomain.com/A: 'RRset exists (value dependent)' prerequisite not satisfied (NXRRSET)

Information 	client 83.170.31.203#1791: updating zone 'adomain.com/IN': update unsuccessful: pc-niknami.adomain.com/A: 'RRset exists (value dependent)' prerequisite not satisfied (NXRRSET)

Information 	client 83.170.31.203#1651: updating zone 'adomain.com/IN': update unsuccessful: pc-niknami.adomain.com/A: 'RRset exists (value dependent)' prerequisite not satisfied (NXRRSET)

Error 		client 83.170.31.199#1026: update 'adomain.com/IN' denied

Error 		client 83.170.31.199#1130: update 'adomain.com/IN' denied

Error 		client 83.170.31.199#1026: update 'adomain.com/IN' denied

Error 		client 83.170.31.199#22269: update 'adomain.com/IN' denied

Error 		client 83.170.31.199#22269: update 'adomain.com/IN' denied

Error 		client 83.170.31.199#1025: update 'adomain.com/IN' denied

Information 	client 12.160.37.210#53882: notify question section contains no SOA

Error 		client 83.170.31.199#1136: update 'adomain.com/IN' denied

Error 		client 83.170.31.199#1136: update 'adomain.com/IN' denied

Error 		client 83.170.31.199#22260: update 'adomain.com/IN' denied

Error 		client 83.170.31.199#1130: update 'adomain.com/IN' denied

Error 		client 83.170.31.199#22266: update 'adomain.com/IN' denied

Information 	client 83.170.31.203#4040: updating zone 'adomain.com/IN': update unsuccessful: pc-salahmand.adomain.com/A: 'RRset exists (value dependent)' prerequisite not satisfied (NXRRSET)

Information 	client 83.170.31.203#4029: updating zone 'adomain.com/IN': update unsuccessful: pc-salahmand.adomain.com/A: 'RRset exists (value dependent)' prerequisite not satisfied (NXRRSET)

Error 		client 83.170.31.199#22263: update 'adomain.com/IN' denied

Error 		client 83.170.31.199#1025: update 'adomain.com/IN' denied

Open in new window

0
Comment
Question by:mike99c
  • 3
  • 2
5 Comments
 
LVL 51

Expert Comment

by:Netman66
ID: 20324777
It's telling you a non-domain computer is attempting to update a DNS record and is being denied.

It appears the name of the PC is "pc-nicknami" and "pc-salahmand".

It also doesn't look like an MS error - is this a BIND DNS server?
0
 

Author Comment

by:mike99c
ID: 20329981
Yes it is Bind, do you now how we can block the attempt, to stop it reaching the logs?
0
 
LVL 51

Expert Comment

by:Netman66
ID: 20330329
It's already being blocked.  The Events are just so you know.  Personally, I'd want to know rather than ignore it.

Are these machines yours?  Maybe over VPN or something similar?

It's possible machines that are not yours are being attached to the network - would this be a possibility?


0
 

Author Comment

by:mike99c
ID: 20331266
We host the domain but we don't know who's machines they are.
They are not connected over VPN.
Not sure what they are doing, but we get these events every hour and it does fill the log.
Would be good to stop them somehow.
0
 
LVL 51

Accepted Solution

by:
Netman66 earned 500 total points
ID: 20331322
On your firewall, block those 2 IP addresses or filter those ports out.  Right now it appears these two computers are attempting some sort of hack over multiple ports.  You should have some sort of filtering for inbound ports that are not required or an "allow" list of the few inbound that are.

Or notify the ISP that these guys are attempting to hack you.

0

Featured Post

Maximize Your Threat Intelligence Reporting

Reporting is one of the most important and least talked about aspects of a world-class threat intelligence program. Here’s how to do it right.

Join & Write a Comment

So you have two Windows Servers and you have a directory/folder/files on one that you'd like to mirror to the other?  You don't really want to deal with DFS or a 3rd party solution like Doubletake. You can use Robocopy from the Windows Server 200…
Learn about cloud computing and its benefits for small business owners.
This tutorial demonstrates a quick way of adding group price to multiple Magento products.
This video explains how to create simple products associated to Magento configurable product and offers fast way of their generation with Store Manager for Magento tool.

760 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

20 Experts available now in Live!

Get 1:1 Help Now