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I only want to disable SSH access but retain FTP access to user myuser. I've perform the following command usermod -s /bin/false myuser. Upon testing, it disable both SSH and FTP.

  1. How can I reverse this?

  2. How can I disable SSH access for myuser but allow FTP access?

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What OS and distribution are you using? What SSH and FTP server software? – depquid Mar 21 '13 at 16:54
@depquid Debian Squeeze, Pro FTP, how do I find out what type of SSH? – IMB Mar 21 '13 at 16:55
To get the ssh version run ssh -V. To reverse what you did do usermod -s /bin/bash. – terdon Mar 21 '13 at 17:04
@terdon Thanks OpenSSH_5.5p1 Debian-6+squeeze3, OpenSSL 0.9.8o 01 Jun 2010 – IMB Mar 21 '13 at 17:05
up vote 1 down vote accepted

To allow FTP access, try turning off ProFTPD's check for a valid shell by setting the following in /etc/proftpd.conf:

RequireValidShell Off


WARNING: If you have other users on the system whose FTP access has been disabled by setting their shell to one that is not a valid login shell, making this directive change will give them FTP access.

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