[OpenAFS] Re: feasibility of moving lightweight-principals issue "upstream" to kerberos

Jeffrey Altman jaltman@secure-endpoints.com
Sun, 01 Jan 2006 01:54:30 -0500


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Adam Megacz wrote:

> Yes.  One facet of what I'm getting at is that users should be able to
> use face-to-face interaction as an authentication mechanism if their
> AFS admins wish to allow that in their cell.  Right now there is a
> technological barrier to this policy option.

I really think you are confusing the authentication and authorization
issues.   AFS does not manage identification.   That is performed by
whatever authentication system you are using.   If you want to setup
an authentication model that allows identities to be issued based upon
one user in your authentication domain vouching for another, by all
means implement a web interface that allows that.   However, this has
nothing at all to do with AFS which is simply a service that relies
on an external authentication service.

As I have pointed out numerous times this past week, if you can control
a DNS domain then you can deploy a Kerberos realm and as the
administrator of that realm you can implement whatever policy your heart
desires.

I have also described how you can use authentication services other than
Kerberos with AFS by implementing a token issuing daemon that accepts
your authentication mechanism and returns a token to the end user.

The new Network Identity Manager that is being shipped with MIT Kerberos
for Windows and will be distributed with OpenAFS in a future release is
entirely modular.  You can implement your own "identity" modules for it
that can support your authentication model.   For Unix, you can
implement your own command line tools and PAM modules to obtain tokens
for your users.

Jeffrey Altman


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