03-21-2013
SFTP user include/exclude without preventing SSH login
I have been asked to see if we can restrict SFTP access to authorised users only. There will be business users who will log on with SSH, but they are locked into a menu. They will have write access to the production data to do their job, but we don't want them to have access to read/write the files with SFTP or anything else for that matter.
For plain FTP, we would use the /etc/ftpusers file and re-create it each night with all users in /etc/passwd except those in the allowed list. Not clever, but it worked.
We're running RHEL / Centos 6.3 and the server is running vsftp is installed for plain FTP along with openssh-server-5.3p1-81.el6_3.x86_64 The sshd_config file defines sftp as starting up /usr/libexec/openssh/sftp-server
Any suggestions? Badly, the users home directory is a common area with the application & data below it, so I can't just enforce the chroot jail. User SSH login is by userid/password rather than certificate. Not sure if that helps or hinders.
Thanks, in advance,
Robin
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