LKBEN10601: Howto flush the dns cache of a microsoft internet security and acceleration server
LKB | Created: 02/04/2020 | Version: 0 | Language: EN | Rating: 0 | Outdated: False | Marked for deletion: False
Author: Wim Peeters - Keskon GmbH & Co. KG
Symptom
A dns record has changed and is cached on the proxy server
Cause
This is by design
Solution
You can use the DNSTools.exe to do this. The DNSTools utility can be downloaded by Microsoft.
This displays the information about test.lubby.org
"C:\Programme\Microsoft ISA Server\DNSTools.exe" /D /SN test.lubby.org
and this one deletes the entry
"C:\Programme\Microsoft ISA Server\DNSTools.exe" /C /SN test.lubby.org
To fush the whole cache you use the /C parameter only.
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.