access from the external networks. If you want to assign a global IP address to and use a printer/multifunction machine, contact your network administrator.Using Firewall to Restrict TransmissionA firewall is a system that prevents unauthorized access from the external networks and protects against attacks/intrusions to a local area network. You can use a firewall on your network environment to block access from theexternal network that appears to be dangerous, by restricting communication from specified IP address of theexternal network. The function installed to a Canon printer/multifunction machine enables you to set up the IPaddress filter. For information on how to set up an IP address filter, see Specifying IP Addresses for FirewallRules(P. 238) .Specifying the SSL Encrypted CommunicationFor information on the SSL Encrypted Communication, see Implementing Robust Security Features(P. 254) , andon the procedures to specify, see Enabling SSL Encrypted Communication for the Remote UI(P. 255) .Setting PIN to Manage Information Stored in the PrinterIf a malicious third party attempts to gain unauthorized access to a printer/multifunction machine, setting PIN toinformation stored in the machine will reduce the risk of information leakage. Canon printer/multifunction machineenables you to protect various type of information by setting PIN.Setting PIN to Each Function● Setting PIN for Using Remote UIFor more information, see Setting a Remote UI PIN(P. 235) .● Setting PIN for the System Manager SettingsFor more information, see Setting the System Manager ID(P. 226) .Listed above are some examples of security measures for preventing unauthorized access. For more information onthe other security measures, see Security(P. 221) and take necessary security measures for preventingunauthorized access to suit your environment.Security224
