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Ricoh Aficio SP C821DNT1 Design Guide - Page 71

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Print Controller Design Guide for Information Security Data Flow WebDocBox supports HTTP, a protocol used by Web browsers installed on network-connected computers. The session is initiated when the first request for connection is received from the Web browser, after which WebDocBox sends commands to the shared service layers in accordance with the specific operations requested. If 30 minutes passes with no additional access attempts from the same browser, the session is terminated. To initiate a new session, it is then necessary to access the WebDocBox top page (the main screen that displays the list of Document Server files). Data Security Considerations As a security feature common to all Web applications, it is possible to perform access control by allowing connection only with users who provide a specific IP address when the session is initiated. Users who do not provide an authorized IP address are not even able to view Document Server data. In addition, it is possible to prevent the viewing and altering of data through the use of encrypted communication (HTTPS over SSL). With the use of User Authentication, it is possible to limit the conditions under which remote operations can be performed on Document Server files. Only users who have been pre-approved for access and clear the authentication process are allowed to perform the remote operations. Additionally, it is possible to place limits on the specific operations that each registered user is capable of performing. Users are unable to perform operations that have been prohibited, even if they clear the authentication process. This prevents any potential leakage or alteration of image data. It is possible to protect individual Document Server documents with a password (see 1.7.2 Document Server Documents (MFP models only) for more details). It is possible to restrict remote access to stored documents using the same ACL mentioned in section 1.52. Users logged in as Document Administrators are able to disable the password lock as well as view, edit and delete all documents. However, Document Administrators are not able to send (FAX, e-mail, forward), capture or print out the documents. When sending stored image files to the PC in PDF format, it is possible to encrypt the file as well as set a password for decrypting the PDF data at the PC side. This prevents any illegal use of the data in the unlikely event the transmission is intercepted. When transmitting stored Scanner files as e-mail attachments, using S/MIME, it is possible to encrypt the entire e-mail (incl. the file attachment), as well as attach a digital signature. This precludes the possibility of data leakage, data alteration, and sender impersonation. Page 71 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

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Print Controller Design Guide for Information Security

Page 71 of 86

Data Flow

WebDocBox supports HTTP, a protocol used by Web browsers installed on network-connected

computers. The session is initiated when the first request for connection is received from the Web

browser, after which WebDocBox sends commands to the shared service layers in accordance with

the specific operations requested. If 30 minutes passes with no additional access attempts from the

same browser, the session is terminated. To initiate a new session, it is then necessary to access the

WebDocBox top page (the main screen that displays the list of Document Server files).

Data Security Considerations

As a security feature common to all Web applications, it is possible to perform access control by

allowing connection only with users who provide a specific IP address when the session is initiated.

Users who do not provide an authorized IP address are not even able to view Document Server data.

In addition, it is possible to prevent the viewing and altering of data through the use of encrypted

communication (HTTPS over SSL).

With the use of User Authentication, it is possible to limit the conditions under which remote operations

can be performed on Document Server files. Only users who have been pre-approved for access and

clear the authentication process are allowed to perform the remote operations. Additionally, it is

possible to place limits on the specific operations that each registered user is capable of performing.

Users are unable to perform operations that have been prohibited, even if they clear the authentication

process. This prevents any potential leakage or alteration of image data.

It is possible to protect individual Document Server documents with a password (see 1.7.2 Document

Server Documents (MFP models only)

for more details).

It is possible to restrict remote access to stored documents using the same ACL mentioned in section

1.52. Users logged in as Document Administrators are able to disable the password lock as well as

view, edit and delete all documents. However, Document Administrators are not able to send (FAX,

e-mail, forward), capture or print out the documents.

When sending stored image files to the PC in PDF format, it is possible to encrypt the file as well as set

a password for decrypting the PDF data at the PC side. This prevents any illegal use of the data in the

unlikely event the transmission is intercepted.

When transmitting stored Scanner files as e-mail attachments, using S/MIME, it is possible to encrypt

the entire e-mail (incl. the file attachment), as well as attach a digital signature. This precludes the

possibility of data leakage, data alteration, and sender impersonation.