Information
The admin_restrictions_ setting in the 'listener.ora' file can require that any attempted real-time alteration of the parameters in the 'listener' via the 'set' command file be refused unless the 'listener.ora' file is manually altered, then restarted by a privileged user.
Rationale:
Blocking unprivileged users from making alterations of the 'listener.ora' file, where remote data/service settings are specified, will help protect data confidentiality.
Solution
To remediate this recommendation:
Use a text editor such as 'vi' to set the admin_restrictions_ to the value 'ON'.