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How to disconnect idle SFTP users?

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linux-howto

http://serverfault.com – I have a SFTP server, where clients connect every minute to exchange files. There are few clients who connect and then dont disconnect resulting in a lot of connections over a period of time. This is choking up the CPU. I have set ClientAliveInterval and ClientAliveCountMax in sshd_config which disconnects idle ssh connection after a certain period, but id doesnt seem to disconnect the idle sftp connections. How do I force idle sftp connections to disconnect? (HowTos)

grtyyu's picture
Submitted by grtyyu on 01/19/2013 – Made popular on 01/19/2013

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does sftp connection closes by default if it stays idle for a prolonged time ?

i have checked sshd_config files , there is no time out value set. but still the connection closes after certain period of time.

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I'm running Debian stable and I'm looking to establish the following environment for users in my 'sftponly' group:

jailed can transfer with SFTP can transfer with SCP cannot login interactively with SSH

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After using the SSH quite a lot on my 1.5 week old Debian 6 VPS, I wanted to start uploading files through SFTP. I already tried that earlier, but with the root account, which isn't possible with SSH anymore due to security changes.

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After logging in to a server, Can I open a new sftp connection to the same server from the same server itself. Does it have any connection issues/limitations for ports etc. and can I copy/move files using the new sftp connection in the same server. Do we have any limitations of opening new connections to the same server after logging in to the server.

Thank you.

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