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RE: Browser login with Windows domain login
From: "Scovetta, Michael V" <Michael.Scovetta () ca com>
Date: Thu, 8 Apr 2004 11:16:12 -0400

Steven,
   This depends greatly on your application:
ASP on Windows Server: 
   built in, just enable "Windows Integrated Authentication" in IIS
Tomcat/JBoss/etc on Windows Server:
   use JK or JK2 (ISAPI filter for IIS that passes authentication through)
Tomcat/JBoss/etc on non-Windows Server:
   take a look at jCIFS (jcifs.samba.org) -or-
   use JK or JK2 on a Windows server that will pass the request to the non-Windows server
Crazy setup (Perl/CGI/Ruby/whatever)
   use a Windows server to authenticate, then homebrew a **secure** method of transferring
    the username to your web application (back-end channel with request token? encrypted 
    token? something like that)

Unfortunately, only IE supports this "silent" authentication. It'll actually use either NLTM or Kerberos, depending on 
the version of IE, the version of Windows it's running on, and the settings on the IIS server. Mozilla/Fire[bird|fox] 
support it too, but they'll always
pop up a prompt for it. (that would be a nice plugin for Moz, to do it silently, wink wink nudge nudge).

That's my brain-dump on this. Hope it helps.

Michael Scovetta

-----Original Message-----
From: stevenr () mastek com [mailto:stevenr () mastek com]
Sent: Thursday, April 08, 2004 9:22 AM
To: webappsec () securityfocus com
Subject: Browser login with Windows domain login


Hi

I needed some pointers/links/tips from you folks on a problem. 

I have a web-based application. Is it possible to sign in a user into
the browser based application transparently based on the windows NT
domain login. By this I mean that when the user opens the browser and
types in the URL, the client machine should automatically send the user
credentials to the application. FYI, the windows domain login is
authenticated against Microsoft Active Directory.

If this is possible, can anyone point me to some sites/tutorials? I have
googled but have not come up with anything useful, hence this mail.

Are there any known vulnerabilites with this kind of approach for web
based logins?

Any help would be appreciated.

Thanks
Steve


MASTEK
"Making a valuable difference"
Mastek in NASSCOM's 'India Top 20' Software Service Exporters List.
In the US, we're called MAJESCO

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