[OpenAFS] why kerberos only works in monolithic organizations

[Jeffrey Altman]

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Adam:

I have to disagree with you.   There are models for Kerberos use in
the P2P space in which every machine is its own realm.   These models
work quite well provided there is a method by which the key exchange
between realms can take place without manual administrator intervention
when it is permissible by policy.

The Public Key Initial Authentication mechanism can also be used in a
model in which a client that wants to obtain an identity in a realm
would generate a self-signed certificate and use some currently
undefined registration protocol to establish an identity in that realm.

Granted these models are currently not distributed such that you could
download an implementation from MIT or KTH but that is because there
has not been appropriate demand for such functionality and the current
Kerberos implementors do not have the resources to develop and test
functionality that is not of immediate use to current large scale
users.  However, this functionality is on the drawing board for future
IETF standardization and implementation provided the necessary resources
can be acquired to complete the work.

In any case, this is not the biggest impediment to OpenAFS adoption.
If you can obtain a domain name and publish the appropriate records
in a name server, then you can successfully deploy an AFS cell and
Kerberos realm.  You can then issue principal names in your realm
for access to your cell according to any policy that you wish.  If you
want to allow random people to access your cell, then you can setup a
web front end to kadmin to allow random people to obtain a principal
name.

Jeffrey Altman


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