[OpenAFS] Native Kerberos 5 authentication in openafs-1.4

[Jeffrey Altman]

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Earl:

AFS is a bit different from an IMAP service.   For the IMAP service
you have configured the authentication methods, mailbox info, and
client principal information.   There are a very small number of
mailboxes that you access and therefore providing this level of
information is reasonable.

When I access a file path in AFS space, how is the AFS client service
supposed to

(a) know that I need/want a token at all.  Anonymous access is used for
    most requests outside my home cell.

(b) know which Kerberos identity I want to use for access to a given
    cell.  I have multiple Kerberos principals from multiple
    institutions all who have AFS cells.   Do I need to use cross realm
    Kerberos to obtain the token or do I need to perform a new kinit for
    a principal in the realm locally associated with the cell?

(c) prompt me for new credentials when my TGT expires or when it doesn't
    know which principal to use for accessing which cell?

Jeffrey Altman




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