> Any body can provide me asp .net source codes for authentication
> against the active directory ??
http://support.microsoft.com/kb/326340/en-us

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Raffaele Rialdi
Microsoft .NET MVP http://mvp.support.microsoft.com -
http://italy.mvps.org UGIdotNET - User Group Italiano .NET
http://www.ugidotnet.org Weblog: http://blogs.ugidotnet.org/raffaele