Keeping or stopping TCP forwardings when the foreground process quits?

raf ssh at
Wed Sep 8 11:10:05 AEST 2021

On Tue, Sep 07, 2021 at 12:52:01PM +0000, Peter Stuge <peter at> wrote:

> Hi,
> Philipp Marek wrote:
> > But the TCP forwards still worked - of course,
> > as the ControlMaster process was still active!
> > 
> > What I'd like to ask/discuss is -- perhaps the TCP forwarding should
> > (optionally, by default) be bound to the interactive SSH process -
> > and when that one quits, the forwarding is stopped?
> I'd also like such behavior, but I don't know if the session owner
> (the Master process) can reliably tell when a Slave process exits?
> A first step might be to enable Slave processes to not only add but
> also remove previously established channels?
> //Peter

Perhaps, when explicitly doing forwarding, you could
add "-o ControlMaster=no" to the command line (or alias
or script). If I understand correctly, that should work
now, without any changes to ssh.


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