How to create a custom passfilt.dll for Windows 2003 Domain Contro

Giganews Newsgroups
Subject: How to create a custom passfilt.dll for Windows 2003 Domain Contro
Posted by:  Don B. (Do…@discussions.microsoft.com)
Date: Fri, 16 May 2008

I have been task to find an in-house solution to modify the complexity level
for AD passwords. It appears the only way to modfy from either having it
enabled or disable in Group Policy, is to create your own passfilt.dll file
and register the custom dll on each DC & disable using complexity in the GPO.
I am looking for some sample source code or documentation on creating a
custom passfilt.dll for Windows 2003 domain controllers.

I have found a few forums talking about customizing the passfilt.dll to
modify the complex password settings. But nothing on how to actually code the
dll. I did fine in one forum that the information could be found in Microsoft
Windows SDK. The only version that can be downloaded is for Windows 2008
server and doesn't have the sample code that the forum mention. I assume that
I might need the Windows 2003 SDK version? But that isn't available anymore.
I also read in a MS forum a MS engineer said that the passfilt.dll is no
longer used and it is in LASS.exe? But I couldn't find any info on that one
either. He didn't provide any links or referances.

Thank you,
Don

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