Preventing Unauthorized Access
19YU-003
This section describes the security measures 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. 6)
Using Firewall to Restrict Transmission(P. 7)
Specifying the TLS Encrypted Communication (P. 7)
Setting PIN to Manage Information Stored in the Multifunction Machine(P. 7)
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 from 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 confirm 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
●
From 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 confirm the IP address, see Setting IPv4 Address(P. 30) .
●
If a global IP address 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 firewall that prevents
Setting Up
6
Summary of Contents for imageRUNNER C3025
Page 1: ...imageRUNNER C3025i C3025 User s Guide USRMA 1888 00 2017 06 en Copyright CANON INC 2017 ...
Page 84: ... Menu Preferences Network Device Settings Management On Setting Up 75 ...
Page 116: ...LINKS Loading Paper in the Paper Drawer P 135 Optional Equipment P 742 Basic Operations 107 ...
Page 160: ...Basic Operations 151 ...
Page 179: ...5 Select Apply LINKS Basic Operation P 121 Basic Operations 170 ...
Page 201: ... Start Use this button to start copying Copying 192 ...
Page 215: ...LINKS Basic Copy Operations P 193 Copying 206 ...
Page 228: ... Sending and Receiving Faxes via the Internet Using Internet Fax I Fax P 250 Faxing 219 ...
Page 330: ...LINKS Checking Status and Log for Scanned Originals P 303 Scanning 321 ...
Page 333: ...LINKS Using ScanGear MF P 325 Scanning 324 ...
Page 361: ...6 Click Fax Fax sending starts Linking with Mobile Devices 352 ...
Page 367: ...Updating the Firmware 444 Initializing Settings 446 Managing the Machine 358 ...
Page 444: ...5 Click Edit 6 Specify the required settings 7 Click OK Managing the Machine 435 ...
Page 567: ... Only When Error Occurs Setting Menu List 558 ...
Page 633: ...5 Select Apply Maintenance 624 ...
Page 772: ...Appendix 763 ...
Page 802: ... 18 MD4 RSA Data Security Inc MD4 Message Digest Algorithm ...