subsystems (was: OpenSSH/scp ->> F-Secure SSH server Problems)

Markus Friedl Markus.Friedl at
Wed Mar 14 20:54:16 EST 2001

On Tue, Mar 13, 2001 at 11:00:17PM -0500, Greg A. Woods wrote:
> > > The "built-in subsystem" feature is bad design.  It has no business
> > > being directly in the transport protocol.  It is an ugly wart.
> > 
> > No, it is a robust way of specifying server systems without having to
> > rely on locations of binaries, etc.
> [...]
> Point of fact is that this silly protocol wart did not make OpenSSH more
> robust [...]

If you are talking about "protocol warts", then you should really read
the spec again. "subsystem" is more general then both "shell" or
"exec", so it's no "protocol wart" at all.


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