Bug#365884: openssh-client: please offer the possibility to execute a shell command before initiating the connection
On Wed, May 03, 2006 at 10:29:56PM +0200, Florian Weimer wrote:
> * Marc Haber:
> > If this is already possible without wrapping the ssh client, the
> > documentation is too well hidden.
>
> It's called ProxyCommand. The additional overhead should be
> negligible.
The uglyness of the configuration in this case is not negligible:
proxycommand sh -c 'knock <knock params>; sleep 1; exec socket %h %p'
is absolutly ugly, means one more process, the ssh client giving up
control over the TCP connection and other things. A bad hack, IMO.
Greetings
Marc
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