Rohde & Schwarz SGS100A Manual de usuario

R&S®SGS100A

SGMA RF Source

Instrument Security Procedures

1175.6332.02 ─ 04

(;ÙÍP2)

Contents

R&S®SGS100A

2Instrument Security Procedures 1175.6332.02 ─ 04

Contents

1 Overview................................................................................................. 2

2 Instrument Models Covered..................................................................2

3 Security Terms and Definitions............................................................ 3

4 Types of Memory and Information Storage in the R&S SGS............. 3

5 Instrument Declassification.................................................................. 6

6 Special Considerations for USB Ports and LAN Services................. 7

1 Overview

In many cases, it is imperative that the R&S SGS SGMA RF Sources are used in a

secured environment. Generally these highly secured environments do not allow any

test equipment to leave the area unless it can be proven that no user information

leaves with the test equipment. Security concerns can arise when devices need to

leave a secured area e.g. to be calibrated or serviced.

This document describes the types of memory and their usage in the R&S SGS. It pro-

vides a statement regarding the volatility of all memory types and specifies the steps

required to declassify an instrument through memory clearing or sanitization proce-

dures. These sanitization procedures are designed for customers who need to meet

the requirements specified by the US Defense Security Service (DSS).

2 Instrument Models Covered

Table 2-1: SGMA RF Source models

Product name Order number

R&S SGS100A 1416.0505.02

The SGMA RF Source base unit must be ordered together with one of the following

frequency options:

●R&S SGS-B106

●R&S SGS-B106V

Security Terms and Definitions

R&S®SGS100A

3Instrument Security Procedures 1175.6332.02 ─ 04

3 Security Terms and Definitions

Clearing

The term "clearing" is defined in Section 8-301a of DoD 5220.22-M, "National Industrial

Security Program Operating Manual (NISPOM)". Clearing is the process of eradicating

the data on media so that the data can no longer be retrieved using the standard inter-

faces on the instrument. Therefore, clearing is typically used when the instrument is to

remain in an environment with an acceptable level of protection.

Sanitization

The term "sanitization" is defined in Section 8-301b of DoD 5220.22-M, "National

Industrial Security Program Operating Manual (NISPOM)". Sanitization is the process

of removing or eradicating stored data so that the data cannot be recovered using any

known technology. Instrument sanitization is typically required when an instrument is

moved from a secure to a non-secure environment, such as when it is returned for ser-

vice of calibration.

The memory sanitization procedures described in this document are designed for cus-

tomers who need to meet the requirements specified by the US Defense Security Ser-

vice (DSS). These requirements are specified in the "Clearing and Sanitization Matrix"

in Section 14.1.16 of the ISFO "Manual for the Certification and Accreditation of Classi-

fied Systems under the NISPOM".

Instrument declassification

The term "instrument declassification" refers to procedures that must be undertaken

before an instrument can be removed from a secure environment, for example when

the instrument is returned for calibration. Declassification procedures include memory

sanitization or memory removal, or both. The declassification procedures described in

this document are designed to meet the requirements specified in DoD 5220.22-M,

"National Industrial Security Program Operating Manual (NISPOM)", Chapter 8.

4 Types of Memory and Information Storage

in the R&S SGS

The SGMA RF Source contains various memory components.

The following table provides an overview of the memory components that are part of

your instrument. For a detailed description regarding type, size, usage and location,

refer to the subsequent sections.

Types of Memory and Information Storage in the R&S SGS

R&S®SGS100A

4Instrument Security Procedures 1175.6332.02 ─ 04

Memory type Size Content Volatility User

Data

Sanitization

procedure

SDRAM (CPU

board)

256 Mbyte Temporary information storage

for operating system and

instrument firmware

Volatile Yes Turn off instru-

ment power

EEPROM (RF

module, pro-

cessor mod-

ule)

4 x

4 kbyte up to

1 Mbyte

●Module-specific data:

– Serial number

– Revision

– Options

●Calibration correction data

●Initial CPU configuration

data

Non-volatile No None required

(no user data)

Smart card

(processor

module)

32 kbyte Hardware information:

●Serial number

●Product options

●Operation time

●Power-on count

Non-volatile No None required

(no user data)

Flash (pro-

cessor board)

256 Mbyte ●Operating System

●Instrument firmware

●Boot code

●Maintenance and recovery

system

●User data, instrument and

password settings

Non-volatile Yes "Sanitize inter-

nal memory"

procedure

(see "Flash"

on page 5)

4.1 Volatile Memory

The volatile memory in the instrument does not have battery backup. It loses its con-

tents as soon as power is removed from the instrument. The volatile memory is not a

security concern.

Removing power from this memory meets the memory sanitization requirements speci-

fied in the "Clearing and Sanitization Matrix" in Section 5.2.5.5.5 of the ISFO Process

Manual for the Certification and Accreditation of Classified Systems under the NIS-

POM.

SDRAM

The SDRAM on the CPU board has a size of 256 Mbyte and contains temporary infor-

mation storage for operating system and instrument firmware. The SDRAM loses its

memory as soon as power is removed.

Sanitization procedure: Turn off instrument power

4.2 Non-Volatile Memory

The R&S SGS contains various non-volatile memories. Out of these, only the internal

Flash memory contains user data as well as instrument configuration in its Journaling

Flash File System (JFFS) area. The Flash memory can be sanitized via "Sanitize inter-

nal memory" procedure.

Non-Volatile Memory

Types of Memory and Information Storage in the R&S SGS

R&S®SGS100A

5Instrument Security Procedures 1175.6332.02 ─ 04

All non-volatile memories of the R&S SGS are not a security concern.

EEPROM

The RF module as well as the processor module of the R&S SGS SGMA RF Source

are equipped with in total four serial EEPROM devices with a size of 4 kbyte up to

1 Mbyte. The EEPROMs contain module-specific data, calibration correction data and

initial processor configuration data. The EEPROM does not hold user data nor can the

user access the EEPROM storage.

Sanitization procedure: None required (no user data)

Smart card

The processor module of the R&S SGS SGMA RF Source is equipped with a smart

card with a size of 32 kbyte. It contains information related to the installed hardware,

such as the serial number of the module, product options, operating time and power-on

cycle count. The smart card does not hold user data nor can the user access the stor-

age.

Sanitization procedure: None required (no user data)

Flash

The single-chip Flash memory, located on the processor board, has a size of

256 Mbyte of storage. The Flash contains boot code, maintenance and recovery sys-

tem, the operating system and instrument firmware. Furthermore user data, instrument

and password settings are stored here.

Figure 4-1: Logical sections of the Flash memory

The Flash memory is logically divided into three sections:

●Boot code/OS kernel:

The 8 Mbyte memory section contains the boot code and the operating system ker-

nel. This area is initialized during production and can be updated in case of firm-

ware update. It cannot be accessed by the user and is not modified during instru-

ment operation.

●Recovery area:

The 64 Mbyte memory section contains recovery data which is used to restore the

factory instrument configuration if required. This area is initialized during produc-

tion. It cannot be accessed by the user and is not modified during instrument oper-

ation.

●Journaling Flash File System (JFFS):

The remaining memory section is controlled by a Journaling Flash File System

(JFFS). This area is shared between operating system files, instrument firmware

and user data. Operating system files and instrument firmware are encapsulated in

preconfigured, read-only squash FS file systems. Both cannot be modified during

Non-Volatile Memory

Instrument Declassification

R&S®SGS100A

6Instrument Security Procedures 1175.6332.02 ─ 04

instrument operation nor can they be modified in parts. During firmware update,

they are replaced in total.

In the remaining JFFS area the following information is stored:

– User data and instrument settings (automatically or manually saved instrument

setups)

– Passwords

– LAN and USB port enable/disable states

– Internal adjustment data

The R&S SGS provides a sanitizing procedure that ensures that user data is irretrieva-

bly removed from the instrument.

Sanitization procedure: "Sanitize internal memory" procedure

The sanitizing procedure is part of the instruments maintenance system which can be

accessed by pressing the front panel buttons RF, LAN and ID during power-on.

After activating the sanitizing procedure, the following steps occur:

●The file rootfs.squashfs (read-only, encapsulating operating system files) and

the file optfs (read-only, encapsulating instrument firmware) are temporarily

saved in SDRAM.

●A full sector erase command as per manufacturer data sheet is applied to each

sector of the JFFS area. This explicitly includes sectors which might be declared as

defect.

●Every addressable location of the JFFS area is overwritten by a single character.

●Again, a full sector erase command as per manufacturer data sheet is applied to

each sector of the JFFS area, including defect sectors.

●The JFFS is recreated and operating system files as well as instrument firmware

are restored.

●Passwords are reset to factory values, USB and Ethernet interfaces are enabled.

The "Sanitize internal memory" procedure meets the memory sanitization requirements

specified in the "Clearing and Sanitization Matrix" in Section 14.1.16 of the ISFO "Man-

ual for the Certification and Accreditation of Classified Systems under the NISPOM".

5 Instrument Declassification

Before you can remove the SGMA RF Source from a secured area (for example to per-

form service or calibration), all classified user data needs to be removed. You can

declassify the SGMA RF Source as follows:

1. Turn off the SGMA RF Source. This will sanitize the volatile memory.

2. To sanitize the internal Flash memory, perform the following steps:

a) Make sure, that no USB mass memory device is conntected.

b) Press the front panel buttons RF, LAN and ID and hold them while switching on

the instrument again.

Special Considerations for USB Ports and LAN Services

R&S®SGS100A

7Instrument Security Procedures 1175.6332.02 ─ 04

After a few seconds, the maintenence system is indicated by flashing LEDs.

Sanitizing starts now. Erasing the Flash memory is indicated by a running red LED.

When flashing stops, the result is indicated by the LEDs:

● All LEDs are green: Sanitizing was successful!

● All LEDs are red (with one flashing orange): Sanitizing failed!

In this case, retry sanitizing or contact the Rohde & Schwarz service depart-

ment.

Afterwards the power can be removed or the instrument can be rebooted. During the

first reboot after sanitizing the internal adjustments are performed. Since permanent

adjustment values are located in the instrument’s EEPROMs, the validity of the SGMA

RF Source’s calibration is maintained throughout the sanitization.

Following these steps removes all user data from the SGMA RF Source. The SGMA

RF Source can now leave the secured area.

These declassification procedures meet the needs of customers working in secured

areas.

Validity of instrument calibration after declassification

The calibration makes sure that measurements comply to government standards.

Rohde & Schwarz recommends that you follow the calibration cycle suggested for your

instrument.

The EEPROM is the only memory type used to hold permanent adjustment values

required to maintain the validity of the R&S SGS's calibration. Therefore, performing

the declassification procedure does not affect the validity of the instrument’s calibra-

tion.

6 Special Considerations for USB Ports and

LAN Services

There are special considerations for R&S SGS USB ports and LAN services to avoid

unauthorized data access in a high-security location.

6.1 Special Considerations for USB Ports

USB ports can pose a security risk in high-security locations. Generally, this risk comes

from small USB pen drives, also known as memory sticks or key drives. They can be

easily concealed and can quickly read/write several Gbyte of data.

Special Considerations for USB Ports

Special Considerations for USB Ports and LAN Services

R&S®SGS100A

8Instrument Security Procedures 1175.6332.02 ─ 04

Disabling USB ports

You can disable the USB ports of the R&S SGS in the setup dialog:

1. Select "Setup", "Security", "USB Storage" and then "Disable".

2. Enter the Security Password and confirm with "Accept".

When disabled, no USB storage device is accepted by the instrument. Other non-

memory USB devices (such as keyboards and mice) are not affected.

The enable/disable state of the USB port is stored on the Flash memory.

6.2 Special Considerations for LAN Ports

To protect the instrument against unauthorized data access in your high-security loca-

tion, you can disable the LAN interface.

Disabling LAN ports

You can disable the LAN ports of the R&S SGS in the setup dialog:

1. Select "Setup", "Security", "LAN Services" and disable "LAN Interface".

2. Enter the Security Password and confirm with "Accept".

When disabled, no LAN connection can be established with the instrument.

The enable/disable state of the LAN port is stored on the Flash memory.

For more information concerning the security features, refer to the R&S SGS100A

Operating Manual.

Mühldorfstr. 15, 81671 München, Germany

Phone: +49 89 41 29 - 0

Fax: +49 89 41 29 12 164

Email: [email protected]

Internet: www.rohde-schwarz.com

Subject to change – Data without tolerance limits is not binding.

R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.

Trade names are trademarks of their owners.

Throughout this manual, products from Rohde & Schwarz are indicated without the ® symbol , e.g.

R&S®SGS is indicated as R&S SGS.

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