Re: Failure Rate for Heimdal SW?

["Henry B. Hotz" <hotz@jpl.nasa.gov>]

On Aug 13, 2004, at 12:05 AM, Niklas Edmundsson wrote:

> On Thu, 12 Aug 2004, Henry B. Hotz wrote:
>
>> I have one of those availability requirements that says Kerberos  
>> can't fail for more than X hours per year.  Now I've got good  
>> historical data on the hardware/OS that I can put in that form.
>>
>> Anybody got any "software failures" which are remotely statistical in  
>> nature? Any ideas on how to assign an availability number to the  
>> software component? Any failures that require/cause a Kerberos  
>> restart?
>
> Would security-related bugs count as a software failure?

I don't think so.  It's an availability requirement.  You could  
discover a vulnerability and then fix it a few days or hours later, but  
Kerberos wouldn't be unavailable for the duration.

> By "Kerberos", do you mean the Kerberos server(s) or the entire  
> Heimdal package?

The "service", which I would interpret to be the server.  The client SW  
is whatever comes with the OS and isn't what the central on-line  
service provides.
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The opinions expressed in this message are mine,
not those of Caltech, JPL, NASA, or the US Government.
Henry.B.Hotz@jpl.nasa.gov, or hbhotz@oxy.edu