Re: [Tsvwg] [SCTP checksum problems]

[Lloyd Wood <l.wood@eim.surrey.ac.uk>]

On Mon, 23 Apr 2001, Stephen Bailey wrote:

> Lloyd,
> 
> Thanks for your input.
> 
> > Reality check, please.
> 
> Is your point that no protocol should ever assume that there's an
> end-to-end integrity check operating at some layer below it?

No. (How can an *end-to-end* integrity check operate at a lower
layer?)

> The point of the iSCSI integrity check is not that to assume that
> underlying layers (the transport and/or security & integrity) have
> abdicated responsibility for end-to-end integrity. 

I've spent several minutes trying to parse your sentence and its
opposed negatives. I don't think that sentence means whatever you
think it means.

> It is a trust, but verify model.  In a suitably trustworthy [or
> suitably devious] environment you're wasting your time verifying.

In a *perfectly* trustworthy or *perfectly* devious environment that
might be the case. But environments are not perfect - and they change,
too.

So, always verify.

L.

<L.Wood@surrey.ac.uk>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>