Brother HL-4040CDN - Manual (Page 143)

Security features
136
12
d
Type https://printer_ip_address/ into your browser to access your printer. (Where
printer_ip_address
is the IP address or the print server name) Then, click Continue to this
website (not recommended).
e
Click Certificate Error, and then click View certificates. For the rest of the instructions, follow the steps
from d on page 143.