Bedienungsanleitung Canon MF426 (Seite 15 von 751) (Englisch)

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Preventing Unauthorized Access

2820-003

This section describes the security measur

es on how to prevent unauthorized access from the external network. This is

a must-read for all users and administrators before using this machine, other printers, and multifunction machines

connected to the network. In recent years, a printer/multifunction machine connected to the network can offer you a

variety of useful functions, such as printing from a computer, operating from a computer using the remote function,

and sending scanned documents via the Internet. On the other hand, it is essential to take security measures to

reduce the security risk for information leakage, as a printer/multifunction machine has become more exposed to

threats, such as unauthorized access and theft, when it is connected to the network. This section explains necessary

settings you need to specify to prevent unauthorized access before using a printer/multifunction machine connected

to the network.

Security Measures to Prevent Unauthorized Access from the External Network

Assigning a Private IP Address(P. 7)

Using Firewall to Restrict Transmission(P. 8)

Specifying the TLS Encrypted Communication (P. 8)

Setting PIN to Manage Information Stored in the Multifunction Machine(P. 8)

Assigning a Private IP Address

An IP address is a numerical label assigned to each device participating in a computer network. A "global IP address" is

used for the communication connecting to the Internet, and a "private IP address" is used for the communication

within a local area network, such as a LAN in the company. If a global IP address is assigned, your printer/

multifunction machine is open to the public and can be accessed via the Internet. Thus, the risk of information leakage

due to unauthorized access from external network increases. On the other hand, if a private IP address is assigned,

your printer/multifunction machine is closed to a local area network and can be accessed by only users on your local

area network, such as a LAN in the company.

Global IP Address

Can be accessed fr

om the external network

Private IP Address

Can be accessed from the users within a local area network

Basically, assign a private IP address to your printer/multifunction machine. Make sure to conrm the IP address,

assigned to the printer/multifunction machine you are using, is a private IP address or not. A private IP address is

found in one of the following ranges.

Ranges for Private IP addresses

● Fr

om 10.0.0.0 to 10.255.255.255

● From 172.16.0.0 to 172.31.255.255

● From 192.168.0.0 to 192.168.255.255

For information on how to conrm the IP address, see

Setting IPv4 Address(P. 31) .

● If a global IP addr

ess is assigned to a printer/multifunction machine, you can create a network environment

to reduce the risk of unauthorized access by installing security software, such as a rewall that prevents

Setting Up

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