AFAIK no. Most are obvious-ish: disallow all, the client and server ones. The 
hardware preauth one is just a placeholder for unimplemented functionality. JPL 
never made much use of them.

The ok as delegate one could be important for AD interoperability if you do a 
HTTP-Negotiate with web servers.

That’s just off the top of my head.

> On Feb 17, 2017, at 3:30 PM, Adam Lewenberg <> wrote:
> I am looking for documentation on the attributes that can be set on a 
> principal. The only thing I could find is page 233 of Jason Garman's 
> "Kerberos: The Definitive Guide" from 2003.
> The kadmin page *lists* the attributes, but is there a man page or Heimdal 
> document page that *describes* what each attribute does and how it affects 
> the principal?
> Thanks, Adam Lewenberg

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