Errors Logon Alerts in Performance Monitor
Article ID: 176616
Article Last Modified on 10/31/2006
APPLIES TO
- Microsoft Windows NT Workstation 3.51
- Microsoft Windows NT Workstation 4.0 Developer Edition
- Microsoft Windows NT Server 3.51
- Microsoft Windows NT Server 4.0 Standard Edition
This article was previously published under Q176616
SYMPTOMS
In Performance Monitor, if you have set up an alert for Errors Logon to
catch failed logon attempts, you see an alert generated every five seconds.
CAUSE
The number of failed logon attempts since the server was last restarted has
exceeded the alert parameter that was set when the alert was configured.
MORE INFORMATION
The counter for Errors Logon is not reset to zero whenever the alert is
issued. This can lead Administrators to believe that a password hacking
program is being used, or that a rogue service is on the network. If the
alert parameter is set to five, after Windows NT records six bad logon
attempts, it will log an alert every five seconds (the default interval)
until the computer is restarted.
Additional query words: audit perfmon
Keywords: kbprb KB176616