LDAP Server starten und prüfen:
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dsamain.exe -dbpath C:\Users\Nutzer1\Desktop\ntds.dit -ldapport 50005 -allowNonAdminAccess 
ldp.exe 127.0.0.1:50005


Script Teil1:
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$DN = ([adsi]"LDAP://localhost:50005").distinguishedName;
$DomainObj = New-Object System.DirectoryServices.DirectoryEntry("LDAP://localhost:50005/$DN");
$objSearcher = New-Object System.DirectoryServices.DirectorySearcher -ArgumentList $DomainObj;
$ObjSearcher.PageSize = $PageSize; $objSearcher.SizeLimit = 10000;
$ObjSearcher.Filter = '(objectCategory=user)'
$Users = $ObjSearcher.FindAll();
$ObjSearcher.Filter = '(objectCategory=group)'
$Groups = $ObjSearcher.FindAll();
$ObjSearcher.Filter = '(objectCategory=computer)'
$Computers = $ObjSearcher.FindAll();
$ObjSearcher.dispose();

Script Teil 2:
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$Users.properties[0]
$Groups.properties[0]
$Computers.properties[0]

Fortgeschrittene:
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$Users  | Select -ExpandProperty Properties | Select @{n='DisplayName';e={$_.name}},@{n='Beschreibung';e={$_.description}}, @{n='WhenChanged';e={$_.whenchanged}}| Out-GridView;
$Computers | Select -ExpandProperty Properties | Select @{n='DisplayName';e={$_.name}}, @{n='OS';e={$_.operatingsystem}}| Out-GridView;