Re: architected shim layers [was Re: threats ID]

[Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>]

Brian;

> Masataka, please moderate your language.

Moderate your language and never say layer 3.5 again.

> I understand layering
> well enough to know that the layers in the OSI model are very
> abitrary choices,

I never say anything on OSI model.

In the Internet, layer 3 is connectionless whereas layer 4
maybe connection oriented.

> and a better model would have been a recursive
> one, with no predefined number of layers.

If you understand layering correctly, you should know that
internal of a layer is not visible from the adjacent
layers.

Recursive means some layer may have internal structure, which,
because of layering, is not visible from outside.

> NAT is indeed a defective shim layer, but what this WG has been
> mainly talking about is architecturally designed shims.

What some of the WG member has been talking about was
architecturally designed NAT. It failed, of course.

						Masataka Ohta