For more information on configuring printer security settings, see the Embedded Web Server Administrator's Guide for your printer.
Check your printers for the following settings:
Disk encryption is enabled.
The following ports are restricted:
TCP 79 (Finger)
TCP 21 (FTP)
UDP 69 (TFTP)
TCP 5001 (IPDS)
TCP 9600 (IPDS)
TCP 10000 (Telnet)
The default cipher list is the OWASP Cipher String ‘B.’