Knowledge Base ISC Main Website Ask a Question/Contact ISC
I keep getting log messages like the following. Why? Jun 21 12:00:00.000 client 10.0.0.1#1234: update denied
Author: ISC Support Reference Number: AA-00279 Views: 2649 Created: 2011-05-10 13:29 Last Updated: 2017-02-17 11:48 0 Rating/ Voters

Someone may be trying to update your DNS zone using the RFC 2136 Dynamic Update protocol, but they do not possibly have permission to do so.

Windows 2000 machines have a habit of sending dynamic update requests to DNS servers without being specifically configured to do so. If the update requests are coming from a Windows 2000 machine, see <http://support.microsoft.com/support/kb/articles/q246/8/04.asp> for information about how to turn them off.

If you get this log message when trying to perform a DNS update with a program such as nsupdate, please check your named configuration.


© 2001-2017 Internet Systems Consortium

For assistance with problems and questions for which you have not been able to find an answer in our Knowledge Base, we recommend searching our community mailing list archives and/or posting your question there (you will need to register there first for your posts to be accepted). The bind-users and the dhcp-users lists particularly have a long-standing and active membership.

ISC relies on the financial support of the community to fund the development of its open source software products. If you would like to support future product evolution and maintenance as well having peace of mind knowing that our team of experts are poised to provide you with individual technical assistance whenever you call upon them, then please consider our Professional Subscription Support services - details can be found on our main website.

Feedback
  • There is no feedback for this article
Quick Jump Menu