To maintain an appropriate level of security, configure Secure Shell (SSH) key file permissions.

Procedure

  1. View the public host key files, located in /etc/ssh/*key.pub.
  2. Verify that these files are owned by root, that the group is owned by root, and that the files have permissions set to 0644.

    The permissions are (-rw-r--r--).

  3. Close all files.
  4. View the private host key files, located in /etc/ssh/*key.
  5. Verify that root owns these files and the group, and that the files have permissions set to 0600.

    The permissions are (-rw-------).

  6. Close all files.