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wag2639
Asked: 2010-06-13 10:28:00 +0800 CST

How do I set default permissions for SFTP for an Ubuntu Server?

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We have an Ubuntu 10.04 server. How can I set it so that new files created (or copied) over SFTP or SSH have g+rw and g+rwx permissions (where appropriate)?

I'm also using setgid (chmod g+s) so that they inherit the proper group owner.

ubuntu ssh permissions sftp umask

2 Answers

  1. In /etc/ssh/sshd_config, you can pass a flag and value in (-u 0002) like the following to set the umask value:

    Subsystem sftp /usr/lib/openssh/sftp-server -u 0002

    Append the -u 0002 to the existing Subsystem sftp line of the configuration file.

    Afterwards, you will need to restart ssh for the changes to take effect:

    service ssh restart
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  2. Best Answer

    In /etc/ssh/sshd_config, change the following:

    Subsystem sftp /usr/lib/openssh/sftp-server

    to:

    Subsystem sftp /bin/sh -c 'umask 0002; exec /usr/libexec/openssh/sftp-server'

    Soure: http://jeff.robbins.ws/articles/setting-the-umask-for-sftp-transactions

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