Verify Permissions and Ownership of Old Passwords File
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Description
To properly set the owner of /etc/security/opasswd
, run the command:
$ sudo chown root /etc/security/opasswd
To properly set the group owner of /etc/security/opasswd
, run the command:
$ sudo chgrp root /etc/security/opasswd
To properly set the permissions of /etc/security/opasswd
, run the command:
$ sudo chmod 0600 /etc/security/opasswd
Rationale
The /etc/security/opasswd
file stores old passwords to prevent
password reuse. Protection of this file is critical for system security.