[Bug 2648] allow max connections config

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=2648

Darren Tucker <dtucker at zip.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |WONTFIX
             Status|NEW                         |RESOLVED

--- Comment #3 from Darren Tucker <dtucker at zip.com.au> ---
(In reply to DarkTrick from comment #2)
> I didn't expect it to be such a complex request. I was expecting
> some central ssh-request receiver, that has knowledge of that. 

There is a central process that receives the connections, but it
immediately forks of a new process to handle the connection.  That
child process has to do quite a bit of protocol work before it finds
out what the username is.

There's a very limited feedback mechanism between those those
processes: a pipe that's closed when the child is either authenticated
or the child dies  which is used to implement MaxStartups.  If you were
going to implement this you'd probably extend those to provide more
information and provide a go/no go decision to the child, but you'd
also have to add a mechanism to catch when the user logs out, keep
track of the counts and do option parsing.

Thanks for the suggestion, but as I said I don't think it's worth the
complexity to implement given that many OSes already implement
something like it.

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