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I have a user that has their shell set to nologin, or actually a different binary "noshell" provided by cPanel.

whatever the case, I want to know if setting their shell this way is enough to prevent them from accessing the server and reaching its files.

when I log in with their key to SFTP I receive an error telling me unexpected end of file, but I am not entirely sure if that would be enough.

Additionally, how do I explicitly deny this user from using SFTP?

Thanks

  • I put my untrusted users (students!) in a group, set their shells to /bin/false, and then set up the internal-sftp engine in SSH so that it chroots them and sets a stricter default umask. – ivanivan Jun 6 '18 at 13:04
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I can confirm that with OpenSSH_7.2p2 (On Ubunutu), setting user shell to /usr/sbin/nologin disables sftp.

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