Is forbidding concurrent ssh sessions a good idea?

[E.S. Rosenberg]

2012/11/12 Yedidyah Bar-David <linux-il at didi.bardavid.org>:
> On Mon, Nov 12, 2012 at 06:32:25PM +0200, E.S. Rosenberg wrote:
>> +1 for tmux, this does however imply that all the admins are using the
>> same account to login (bad scenario) with or instead the tmux/screen
>> line should be added at the end of /root/.profile and not ~/.profile
>
> IIRC screen, perhaps tmux too, has some rather complex set of permissions
> management options, which I would not be surprized if it turns out that
> actually do allow sharing a session from two different users. I did not
> try this. I su to the person's user if I want to share a session. Note
> that (by default?) you need to chown your tty to the other user or
> screen won't work.
>
>>
>> Just note that tmux inside of tmux or screen inside of screen tend to
>> behave bad/not work, screen inside of tmux works, I never tried the
>> other way around.
>
> Never had problems with screen inside screen. Actually, my everyday
> work environment comprizes of 3-level screens, some of which also have
> tmux inside them. I use different key combinations to travel around and
> it works very well. IIRC I did have to change a few configuration options
> when moving it from RedHat/CentOS to Debian, but other than that, it
> worked more-or-less error-free for something like 5 years now.
>
> Tell me if you want my configuration. It's not very elaborate, only
> does what it's meant to do - if you google for things like screenrc
> you'll find many examples of what people do with it.
Oh sorry I meant by default, if you take the time to modify the
key-bindings of the screen/tmux you want to nest then you should be
fine.
Regards,
Eliyahu - אליהו
> --
> Didi
>