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3.3 – Fax Security
Super G3 Fax Board and Multi Line Fax Board
Canon imageRUNNER ADVANCE systems that support Super G3 fax capabilities with the optional
Super G3 Fax Board installed can be connected to the Public Switched Telephone Network for sending
and receiving of fax data. In order to maintain the security of customer’s networks in relation to this
potential interface, Canon has designed its Super G3 Fax Boards to function in accordance with the
following security considerations:
Super G3 Fax Board Communication Mechanism
The modem on the Super G3 Fax Boards does not have Data Modem capability, but only Fax
Modem capability. As a result, TCP/IP communication through the phone line is impossible.
In addition, there is no functional module such as a Remote Access Service that enables
communication between a phone line and a network connection within the device.
Fax Transmission
The PC Fax function can fax documents from the PC via Network, using a Fax driver that runs
on the PC. However, data transfer from the PC via Network to the device and data transfer
(FAX transmission) from the phone line via the G3 FAX board is structurally separated.
Fax Received
Although a received fax document can be accessed from the network through the Confidential
Fax Mail Box function inherent in the device or automatically forwarded to a network, it is not
possible to breach the network in either instance as these capabilities are afforded following
completion of facsimile communication. Since the data stored in the Confidential Fax Mail Box
is in a format proprietary to Canon, there is no threat of virus infection. Even if the device
receives a data file pretending to be a FAX image data but contains a virus, the received data
must be decoded first. While trying to decode the virus the phone line will be disconnected
with a decode error and the received data will be discarded. The Super G3 Fax Boards cannot
receive data files, but are only capable of receiving and decoding facsimile transmissions.
As a result, virus-laden files sent to an imageRUNNER ADVANCE system via its phone line
connection cannot be processed.
Fax Polling
Fax Polling is the only function that enables users to handle documents stored in a polling box.
Any action associated with these documents stored in a polling box is performed using G3 Fax
protocols, which provide no means of accessing a local network.
Other Fax Features
Fax Forwarding / Mailbox Fax Forwarding
The Fax Forwarding function allows imageRUNNER ADVANCE systems equipped with a fax
board to forward inbound fax transmissions to specific recipients. This is done by setting
predetermined conditions or storing faxes in a secure Memory Reception Inbox for later
printing rather than permitting incoming messages to pile up in an open output tray.
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White Paper: Canon imageRUNNER ADVANCE Security
Section 3 – Information Security