Explain NTLM

Posted on 2009-02-19
Last Modified: 2012-05-06
Hi There,

I am a newbie to these areas on computing..

Can someone explain NTML in the following context..

Accessing files on a mapped network drive..

Especially how do i create set this up on the server (to network drive is avail in client) and client (from where we are accessing the files from )

The environment has domain and users are part of AD
Question by:justin_smith
    LVL 32

    Expert Comment

    NTLM is a method used by Microsoft to pass on usernames and passwords to network resources for authentication.  Here is more of an explanation

    Author Comment


    i checked that link..

    but i would like to know the follwoing..

    1)what are the places i need to set this up...
    2)any consequences on older windows like NT 4
    3)what is to be done on the client


    LVL 32

    Expert Comment

    1. All you would/should have to do is setup your shared resources with users.  
    2. There should not be any issues. NTLM is on by default on All Windows OS if I remember correctly, as far back nd NT3.5
    3. Nothing has to be done on the client.  You client will automatically pass the logged on users' credentials.  If the network resource understands the credentials and the user has access, they will automatically have access.

    Author Comment

    //All you would/should have to do is setup your shared resources with users.

    other two steps  need no action from they are default..

    whats the first step?
    LVL 32

    Expert Comment

    The first step to what? What are you looking to do?  Please describe.
    LVL 6

    Accepted Solution

    hi Justin,
    Kindly access below url it will help you alot

    for  XP Network Mapping Kindly access below URL

    for AD you can allocate through GPO

    Create a batch file...

    Net use u: \\server\share\%username%\

    Create a GPO and apply to all domain users which runs the script during login.  Next create \\server\share\ and populate the directory with folders containing individual usernames.  You will have mapped each user to their own personal share.

    make the gpo, go to "User Configuration" > "Scripts (logon-logoff)" > Logon > Properties, than will show a window that you will can add an script to the users. There are button "Show Files" you can click there and create (or copy your batch file that you said ).
    Than just link your GPO to OU that you want

    you can find Step by step info in below URL;EN-US;260370

    Hope it will help you!...

    Revert for any Information!...

    Author Comment


    i meant

    "All you would/should have to do is setup your shared resources with users. "
    how is this done?

    Author Comment

    hi guys,

    we got this working by using unc paths instead of mapped drives..

    This is only a workaround at the moment...

    Is there a way to solve this..

    it is so strange that MS has restricted Mapped drives for Services


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