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Ricoh Aficio SP C820DNT1 Design Guide - Page 54

Scanner MFP Models Only, 3-1 Overview of Scanner Operations, 3-2 Data Flow Security Considerations

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Print Controller Design Guide for Information Security 2-3 Scanner (MFP Models Only) 2-3-1 Overview of Scanner Operations • Depending on the settings selected, the Scanner function does one of the following: 1) Saves the scanned image to the HDD and then sends it via the network I/F as an e-mail (via an SMTP server), to a folder (FTP server, client PC with Windows 98 or newer), or forwarding server (via ScanRouter), 2) Saves the scanned image to the HDD alone without forwarding it, or 3) Temporarily stores the image to the HDD and then forwards it to one of the destinations mentioned above. With the third option, the page location data for the data temporarily stored to the HDD is deleted once the destination receives the transmission, or after the maximum number of transmission attempts has been reached. • With the TWAIN I/F, the TWAIN driver can initiate a scanning job under specified conditions from a network-connected client PC, after which the image is sent back to the TWAIN driver. • Access to the Scanner function itself or to specific features can be restricted with the use of User Authentication, the Available Functions settings for each individual user, and an external coin/card operated device. Use of the TWAIN feature is only allowed after a crosscheck with the User Code, User ID and password pre-programmed in the TWAIN driver U/I. • Operational log entries are created for both scanning and forwarding jobs. The forwarding results can be printed out or viewed directly from the operation panel ("Scanned File Status"). These results are stored in non-volatile memory, i.e. the data is preserved even after the MFP main power is turned off. 2-3-2 Data Flow Security Considerations • Forwarding operations are unidirectional, sending image data to pre-programmed e-mail addresses, folders and forwarding servers only. Since there is no receiving aspect, it is not possible for the Scanner function to receive any illegal data from an external interface. • When sending image data to an SMTP server, it is possible to introduce an authentication process at the POP server before making the connection to the SMTP server (POP before SMTP), and at the SMTP server itself (SMTP authentication). • When sending image data to an SMTP server or Windows PC (SMB), it is possible to encrypt the password using a DIGEST algorithm. When sending the file in PDF format, it is possible to pre-set the Page 54 of 86

Section	Page
04/23/2010	1
For these details, please refer to the Operating Instructions for the specific machine in question.	6
Hardware Configuration	7
MFP	7
LP	9
TPM (Trusted Platform Module): When the MFP/LP main power is turned on, this security module (chip) performs a verification on the validity of the software installed on the hardware platform, which includes checking for any illegal alterations.	10
Shared Service Layers	11
Principal Machine Functions	12
Data Security	14
External I/F	14
Protection of Program Data from Illegal Access via an External Device	14
IC card-based authentication functions: Authentication is mutual and encrypted, which prevents impersonation and ensures that data is properly protected.	16
Firmware Installation/Update	17
Remote Firmware Installation via Web SmartDeviceMonitor Professional IS (performed by the end user)	19
Verification of Firmware/Program Validity	20
Note: Produced by STMicroelectronics, TPM is a product of the ST19WP18 family, which has earned Common Criteria certification (EAL5+).	20
Authentication	21
IC Card Authentication	24
Access Control	25
In addition, it is possible to create an access control list (ACL) for each individual Address Book entry and Document Server document at both the individual user and group levels.	25
If the MLP/LP is initialized in this way, all of the user information, document data, and settings stored in the MLP/LP since installation will be initialized (erased).	26
Data Erase/Overwrite	27
To execute the overwrite, the operator can choose from two options: \	28
The execution of this feature does not clear engine-related information such as the value of the total counter, or engine-related adjustment settings contained in SP mode and UP mode.	28
Through this arrangement, the copy of the HDD storage key is automatically decrypted once the Encryption Key Restore has been completed.	31
Document Server Documents (MFP models only)	33
Access Privileges and Operations for Stored Documents	34
Without HDD: 500 entries	38
Overview of Capture Operations	39
Operations that Generate Captured Images	39
Capture Settings	41
Security Considerations	42
Captured Documents and Log Data	42
Additional Methods for Increased Security	42
(Authentication not required)	42
Copier (MFP Models Only)	43
Overview of Copier Operations	43
Data Security Considerations	43
Protection of Copy Jobs in Progress	43
Protection of Document Server Documents	43
Refer to 1.7.2 Document Server Documents (MFP models only) for details on the Document Lock feature.	44
Restricting the Available Functions for Each Individual User	45
Job/Access Log Data Collection	45
Print Backup	45
(printing out, editing, copying).	46
Overview of Printer Operations	47
Data Flow	47
Data Security Considerations	51
The \	53
Overview of Scanner Operations	54
Data Flow Security Considerations	54
Protection of Data when Performing Scanning and Sending Operations	55
Protection of Document Server Documents	56
Protection of Sending Results and Status Information	57
Protection of the Scanner Features Settings	57
Data Stored in the Job Log	58
Terminology	58
FTP (File Transfer Protocol): A protocol used when transferring files over a TCP/IP network.	58
Overview of FAX operations	59
Data Security Considerations	60
Protection of the Journal and Documents in Document Server Storage	61
Protection of FAX Transmission Operations	61
Protection of FAX Features Settings	62
The \	62
Job Log	62
Protection of Internet FAX Transmissions using S/MIME	62
Preventing FAX Transmission to Unintended Destination(s)	63
This prevents a FAX from being sent to an unintended destination when, for example, the operator accidentally touches an additional Quick Dial key.	63
Overview of NetFile Operations	64
Data Flow	65
Supplementary	65
Network Topology for a System Using Integration Server Authentication (Sample)	66
As long as the track ID is not stolen from the communication path between the PC and MFP/LP (which can be protected against by enabling SSL encryption) or from the PC itself, it is impossible to perform any unauthorized operations on these print jobs	68
Web Server Framework	69
WebDocBox (MFP models only)	70
For more details on job and access logs, please refer to 1.9 Job/Access Logs.	72
@Remote	73
Overview of @Remote Operations	73
Data Security Considerations	73
Security is increased even further by the fact that the symmetric key used is not a static key, but rather one that is generated every time a new session is initiated.	73
Overview of Copy Data Security Operations	74
Data Flow	75
Following this, an entry for the event itself is stored in the access log, along with the username.	75
Overview of Operations	77
1	77
Overview of SDK Application Functions	79
3: DSDK Œ MFP/LP Hardware Configuration	79
Scanning Functions: Sending Data Over the Network with the Copier and Scanner (MFP models only)	80
FAX Functions (MFP models only)	80
Network Functions	81
Printer Functions	81
Machine Administrative Functions (MFP models only)	81
Authentication Functions	81
Data Security Considerations	83
Preventing the Installation of Illegal Applications	83
Authentication of SDK Applications at Installation	83
Prevention of Access to Address Book Data and Machine Management Data	85
Protection Against Attacks on Principal MFP/LP Functions, Prevention of Damage to the System	85
Protection Against Attacks from External Sources	85

Match case Limit results 1 per page

Print Controller Design Guide for Information Security

Page 54 of 86

2-3

Scanner (MFP Models Only)

2-3-1 Overview of Scanner Operations

•

Depending on the settings selected, the Scanner function does one of the following:

1) Saves the scanned image to the HDD and then sends it via the network I/F as an e-mail (via an

SMTP server), to a folder (FTP server, client PC with Windows 98 or newer), or forwarding server (via

ScanRouter),

2) Saves the scanned image to the HDD alone without forwarding it, or

3) Temporarily stores the image to the HDD and then forwards it to one of the destinations mentioned

above.

With the third option, the page location data for the data temporarily stored to the HDD is deleted once

the destination receives the transmission, or after the maximum number of transmission attempts has

been reached.

•

With the TWAIN I/F, the TWAIN driver can initiate a scanning job under specified conditions from a

network-connected client PC, after which the image is sent back to the TWAIN driver.

•

Access to the Scanner function itself or to specific features can be restricted with the use of User

Authentication, the Available Functions settings for each individual user, and an external coin/card

operated device. Use of the TWAIN feature is only allowed after a crosscheck with the User Code,

User ID and password pre-programmed in the TWAIN driver U/I.

•

Operational log entries are created for both scanning and forwarding jobs. The forwarding results can

be printed out or viewed directly from the operation panel (“Scanned File Status”). These results are

stored in non-volatile memory, i.e. the data is preserved even after the MFP main power is turned off.

2-3-2 Data Flow Security Considerations

•

Forwarding operations are unidirectional, sending image data to pre-programmed e-mail addresses,

folders and forwarding servers only. Since there is no receiving aspect, it is not possible for the

Scanner function to receive any illegal data from an external interface.

•

When sending image data to an SMTP server, it is possible to introduce an authentication process at

the POP server before making the connection to the SMTP server (POP before SMTP), and at the

SMTP server itself (SMTP authentication).

•

When sending image data to an SMTP server or Windows PC (SMB), it is possible to encrypt the

password using a DIGEST algorithm. When sending the file in PDF format, it is possible to pre-set the