[Info-vax] An alternative history of computing

[Simon Clubley]

On 2021-07-24, Arne Vajhøj <arne at vajhoej.dk> wrote:
>
> A protocol is open if it itself is documented.
>
> Other protocols on top of it can be open or closed without
> impacting that.
>
> There are also closed protocols on top of TCP/IP - that
> does not make TCP/IP closed.
>

Those lower levels exist to provide services to the higher application
levels. There is an expected set of core functionality at application
level in order for a protocol to be useful and you can't call something
open if you can't implement that expected set of functionality using the
public standards.

Simon.

-- 
Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
Walking destinations on a map are further away than they appear.