# phpman > man > LWP::Authen::Ntlm(3pm)

## NAME
    [LWP::Authen::Ntlm](https://www.chedong.com/phpMan.php/perldoc/LWP%3A%3AAuthen%3A%3ANtlm/markdown) - Library for enabling NTLM authentication (Microsoft) in LWP

## SYNOPSIS
     use [LWP::UserAgent](https://www.chedong.com/phpMan.php/perldoc/LWP%3A%3AUserAgent/markdown);
     use [HTTP::Request::Common](https://www.chedong.com/phpMan.php/perldoc/HTTP%3A%3ARequest%3A%3ACommon/markdown);
     my $url = '<http://www.company.com/protected_page.html>';

     # Set up the ntlm client and then the base64 encoded ntlm handshake message
     my $ua = [LWP::UserAgent](https://www.chedong.com/phpMan.php/perldoc/LWP%3A%3AUserAgent/markdown)->new(keep_alive=>1);
     $ua->credentials('www.company.com:80', '', "MyDomain\\MyUserCode", 'MyPassword');

     $request = GET $url;
     print "--Performing request now...-----------\n";
     $response = $ua->request($request);
     print "--Done with request-------------------\n";

     if ($response->is_success) {print "It worked!->" . $response->code . "\n"}
     else {print "It didn't work!->" . $response->code . "\n"}

## DESCRIPTION
    [LWP::Authen::Ntlm](https://www.chedong.com/phpMan.php/perldoc/LWP%3A%3AAuthen%3A%3ANtlm/markdown) allows LWP to authenticate against servers that are using the NTLM
    authentication scheme popularized by Microsoft. This type of authentication is common on
    intranets of Microsoft-centric organizations.

    The module takes advantage of the [Authen::NTLM](https://www.chedong.com/phpMan.php/perldoc/Authen%3A%3ANTLM/markdown) module by Mark Bush. Since there is also another
    [Authen::NTLM](https://www.chedong.com/phpMan.php/perldoc/Authen%3A%3ANTLM/markdown) module available from CPAN by Yee Man Chan with an entirely different interface, it
    is necessary to ensure that you have the correct NTLM module.

    In addition, there have been problems with incompatibilities between different versions of
    [Mime::Base64](https://www.chedong.com/phpMan.php/perldoc/Mime%3A%3ABase64/markdown), which Bush's [Authen::NTLM](https://www.chedong.com/phpMan.php/perldoc/Authen%3A%3ANTLM/markdown) makes use of. Therefore, it is necessary to ensure that
    your [Mime::Base64](https://www.chedong.com/phpMan.php/perldoc/Mime%3A%3ABase64/markdown) module supports exporting of the "encode_base64" and "decode_base64"
    functions.

## USAGE
    The module is used indirectly through LWP, rather than including it directly in your code. The
    LWP system will invoke the NTLM authentication when it encounters the authentication scheme
    while attempting to retrieve a URL from a server. In order for the NTLM authentication to work,
    you must have a few things set up in your code prior to attempting to retrieve the URL:

    *   Enable persistent HTTP connections

        To do this, pass the "keep_alive=>1" option to the [LWP::UserAgent](https://www.chedong.com/phpMan.php/perldoc/LWP%3A%3AUserAgent/markdown) when creating it, like
        this:

            my $ua = [LWP::UserAgent](https://www.chedong.com/phpMan.php/perldoc/LWP%3A%3AUserAgent/markdown)->new(keep_alive=>1);

    *   Set the credentials on the UserAgent object

        The credentials must be set like this:

           $ua->credentials('www.company.com:80', '', "MyDomain\\MyUserCode", 'MyPassword');

        Note that you cannot use the [HTTP::Request](https://www.chedong.com/phpMan.php/perldoc/HTTP%3A%3ARequest/markdown) object's "authorization_basic()" method to set
        the credentials. Note, too, that the 'www.company.com:80' portion only sets credentials on
        the specified port AND it is case-sensitive (this is due to the way LWP is coded, and has
        nothing to do with [LWP::Authen::Ntlm](https://www.chedong.com/phpMan.php/perldoc/LWP%3A%3AAuthen%3A%3ANtlm/markdown))

## AVAILABILITY
    General queries regarding LWP should be made to the LWP Mailing List.

    Questions specific to [LWP::Authen::Ntlm](https://www.chedong.com/phpMan.php/perldoc/LWP%3A%3AAuthen%3A%3ANtlm/markdown) can be forwarded to <jtillman@bigfoot.com>

## COPYRIGHT
    Copyright (c) 2002 James Tillman. All rights reserved. This program is free software; you can
    redistribute it and/or modify it under the same terms as Perl itself.

## SEE ALSO
    LWP, [LWP::UserAgent](https://www.chedong.com/phpMan.php/perldoc/LWP%3A%3AUserAgent/markdown), lwpcook.