HP Enterprise printers and scanners - Imaging and Printing Security Best Practices (white paper)

PJL Password
The PJL password protects the default features on the MFP that can be changed by sending PJL commands to the MFP. The PJL
password is required for administrative PJL commands that are used to modify feature settings. If you do not set this password,
you are vulnerable to having your device settings including your control panel display altered. To set the PJL Password:
Click PJL Password under the Security category (Figure 36).
Figure 36: The PJL Password option.
Type a password that is any number between 1 and 2147483647 that is at least nine digits in length, and repeat it in the Repeat
PJL Password field. Do not use the same PJL password for all of your print devices as this can significantly increase the risk of
having your PJL password guessed by an attacker.
Note:
If you have problems configuring this password try configuring it through the EWS.
Printer Firmware Update
HP recommends updating firmware whenever new firmware is available, but you should keep Printer Firmware Update disabled
until you plan to use it. To disable Printer Firmware Update:
Click to select Printer Firmware Update (Figure 37) and select Disable.
Figure 37: The Printer Firmware Update option.
Restrict Color
The Restrict Color options (Figure 38) allow you to manage the usage of color printing supplies within your organization. If you wish
to restrict access to color printing you can configure these settings to match your policy.