Canon imagerunner advance C5550i User Manual page 18

Limiting Communication via a Firewall
A firewall is a system that prevents unauthorized access from external networks in order to prevent attacks or invasion
into the local area network. Access from outside your local network that has potential to be a risk can be shut out
beforehand by limiting communication from a specific external IP address in your network environment.
Communication by Using Firewalls(P. 596)
Setting up TLS Encryption Communication
For TLS communication, see
Managing the Machine's Information via Passwords
Even if the machine receives unauthorized access from a malicious third party, risk of information leakage can be
greatly reduced when various information resources in the machine are protected by passwords.
Password for each function / PIN code setting
● Personal authentication management using User Authentication
Management Settings(P. 558)
● PIN code setting for system management contents
● PIN code settings for accessing Address Book
● Authentication management for Advanced Box
These are examples of preventing unauthorized access. For other details, see
carry out necessary settings according to your environment.
Setting Up
Starting the Remote UI(P. 648) .
Restricting Use of the Address Book(P. 618)
Setting Advanced Box to Public(P. 66)
Configuring the Personal Authentication
Changing the System Manager ID and PIN(P. 583)
Managing the Machine(P. 543) and
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Restricting