Disallow new ssh connections for a while ?

Vilius · 01-06-2011, 06:12 AM

Hello,

What is the best way to disallow new ssh connections for the duration of my session ?

I want to evade read/write collisions. Things work like that - one session put files on server, other copies these files and then deletes them. So in order to evade collision:
- I check if there are no established connections.
- Then I deny new connections temporarily.
- Do the job.
- Allow new connections again.

Maybe there are better ways to achieve the same result ?

thanks
Vilius

Reuti · 01-06-2011, 06:44 AM

You can touch /etc/nologin and put even a message in this file. Depending on your PAM setup, it will disallow new connections. To avoid locking out yourself this way when you exit accidentally, a cron-job could remove the file during night. When you are done, you can just remove the file.

It's also possible to stop/start the sshd or block port 22 in the firewall temporarily.