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Keep track of users logging on and off

Posted on 2004-10-19
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Last Modified: 2013-12-03
Hi,

I am trying to keep track of users logging on and off the system and also if they are idle for a certain of period of time.
Any idea?
Thanks.
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Question by:ewong_111
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jkr earned 2000 total points
ID: 12350877
You could simply write your own Winlogon Notification Package - see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secauthn/security/winlogon_notification_packages.asp ("Winlogon Notification Packages"). It basically boils down to creating a DLL that has the following functionality

//Event handler for the Winlogon Logon event
VOID WLEventLogon (PWLX_NOTIFICATION_INFO pInfo)
{
    //Print the name of the handler to debug output.
    //You can replace this with more useful functionality.
    OutputDebugString (TEXT("NOTIFY:  Entering WLEventLogon.\r\n"));
}

//Event handler for the Winlogon Logoff event.
VOID WLEventLogoff (PWLX_NOTIFICATION_INFO pInfo)
{
    //Print the name of the handler to debug output.
    //You can replace this with more useful functionality.
    OutputDebugString (TEXT("NOTIFY:  Entering WLEventLogff.\r\n"));
}

and is registered with the system under HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify

DllName = mynotifdll.dll
Logon = "WLEventLogon"
Logoff = "WLEventLogoff"

NOTE that the function names are arbitrary.
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by:ewong_111
ID: 12351071
Thanks a million.. you are always so quick and percise
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