Re: Authenticate Against the Domain



Passwords are not stored by Windows Dave. It merely keeps a "digest" of your
password and so can confirm that you know it but without *it* knowing it
itself (also called a 'zero-knowledge proof')

There's a difference between 'authentication' and 'authorisation'. A user is
authenticated when they enter an account name and password, e.g. when they
log on. Thereafter, you can find who they were authenticated as by calling,
say, the GetuserNameEx API. Once you have some guaranteed accurate
information like this then it can be used to determine whether you're
authorised to access some resource. In the example I mention here, the
textual "domain\account" name could be used as some sort of key. Internally,
though, you can also get the security token associated with your process and
pass that around as proof of who you were authenticated as.

Can you provide any more information about what your FAX server will accept
as proof of who you were authenticated as?

Tony Proctor

"FreeMinded" <thedaveboyle@xxxxxxxxx> wrote in message
news:1177320988.499108.254800@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi folks, I would like to develop functionality into our VB6 and .net
applications so that the user is authenticated based on their windows/
domain credentials, and they don't have to enter a password any more.

The module i'm developing interfaces with the fax software on our fax
server. This fax software requires that the user logs in. The client
application that the user has locally doesn't require the user to log
in though - they are authenticated against the domain.

Can anyone with familiarity in this field explain to me what would be
involved in adding this functionality to our application? What is
involved in getting the application to automatically authenticate the
user against the domain instead of having to type in a username and
password?

Currently the application does this:

objLF.Session.Logon(ServerName, Port, UserId, UserPassword)

where the password is taken from a textbox. Would it be possible to
get that password value from the domain controller?

Thanks,

Dave



.



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