HP Commercial LaserJet Printers and MFPs - Imaging and Printing Security Best Practices

Chapter 3 HP LaserJet and Color LaserJet MFP Security Checklist 60
Note:
This setting disables configuration from the MFP EWS. It also disables all
EWS-related settings from Web Jetadmin (they will disappear from Web
Jetadmin menus). With this setting configured, the only way to make
changes to the EWS settings again is to re-enable them using Web
Jetadmin. Always remember to disable EWS Config after making
changes.
Your MFPs are now securely configured.