WTI SRM-100 User manual

WTI Part No.: 13051
Rev. D
SRM-100
SecureRackModem
Firmware Version 1.13 and Higher
User's Guide
5 Sterling ·Irvine ·California 92618-2517
[phone] ·Toll Free: 1-800-854-7226
Fax: [phone] ·http://www.wti.com

Table of Contents
1. Introduction.............................................1-1
2. Unit Description ..........................................2-1
2.1. Front Panel ..........................................2-1
2.2. Back Panel ..........................................2-2
3. Getting Started ...........................................3-1
3.1. Applying Power to the Unit.................................3-1
3.2. Connecting a PC to the Console Port ...........................3-1
3.3. Communicating with the SRM-100 ............................3-2
4. Hardware Installation.......................................4-1
4.1. RackMountingInstallation .................................4-1
4.2. Connecting Power to the SRM-100 ............................4-1
4.2.1. AC Powered Units .................................4-1
4.2.2. DC Powered Units .................................4-2
4.3. SetUp Switches ........................................4-2
4.3.1. De fault Mo dem Baud Rate (Sw1, Sw2) .....................4-2
4.3.2. De fault Flow Con trol For mat (Sw3) .......................4-3
4.3.3. De fault Bits and Par ity (Sw4) ..........................4-3
4.3.4. De fault Rings to An swer (Sw5) .........................4-3
4.3.5. DefaultARQ/Compres sionStatus (Sw6) ....................4-4
4.3.6. De fault Mo dem Speaker Status (Sw7)......................4-4
4.3.7. DefaultSe cu rity ModeStatus (Sw8) ......................4-4
4.4. Initialize Unit to DefaultSettings .............................4-5
4.5. Cable Connection.......................................4-5
4.5.1. Modem Port .....................................4-5
4.5.2. Console Port.....................................4-5
4.5.3. Telco Line ......................................4-6
5. Set-Up and Configuration ....................................5-1
5.1. CommandModeAccess ...................................5-1
5.1.1. Access Via the Console Port............................5-1
5.1.2. Access via Modem .................................5-2
5.2. The General ParametersMenu ...............................5-3
5.3. The Modem Parameters Menu ...............................5-6
5.4. Save Parameters .......................................5-8
6. The Password Directory......................................6-1
6.1. Add Name / Password ....................................6-2
6.2. Edit / Delete from List....................................6-3
6.3. Edit / Delete from Search ..................................6-4
6.4. Viewing the PasswordDirectory ..............................6-5
6.5. Zero Activity Counters ...................................6-6
6.6. Save Parameters .......................................6-6
i

7. Operation ..............................................7-1
7.1. SRM Operating Modes....................................7-1
7.2. Password Functions .....................................7-1
7.2.1. The SystemPassword ...............................7-2
7.2.2. The Console Port Password ............................7-2
7.2.3. UserPasswords ...................................7-2
7.2.4. Dial Back Numbers.................................7-3
7.2.5. Pass word on Dial Back...............................7-3
7.3. Suppressing the Confirmation Prompt ...........................7-4
7.4. Dialing Out from the Modem Port .............................7-4
7.5. Viewing the Audit Log....................................7-5
7.6. The Utilities Menu ......................................7-7
7.6.1. Zero All Activity Counters ............................7-7
7.6.2. De lete Audit Log ..................................7-7
7.6.3. DeleteEntirePasswordDirectory ........................7-7
7.6.4. DefaultParameters .................................7-8
7.6.5. Send Test Message .................................7-8
7.6.6. Upload Parameters .................................7-8
7.6.7. Download Parameters ...............................7-9
7.6.8. Pass-Through Mode (Console-Modem) .....................7-9
8. Saving and Restoring Parameters and Password Directory ................8-1
Appendices:
A. Interface Descriptions .....................................Apx-1
A.1. Console Port........................................Apx-1
A.2. Modem Port ........................................Apx-1
B. Specifications ..........................................Apx-2
C. Customer Service ........................................Apx-3
List of Figures
2.1. Front Panel (Not to Scale) ....................................2-1
2.2. Back Panel (DC Version Shown) ................................2-2
3.1. The SRM-100 Help Screen....................................3-3
4.1. Terminal Block Assembly and Grounding Screw (DC Units Only).............4-2
5.1. The SRM-100 Help Screen....................................5-2
5.2. The General Parameters Menu..................................5-3
5.3. The Modem Parameters Menu..................................5-6
6.1. The Edit Password Directory Menu...............................6-1
6.2. The Edit/Delete Name/Password Menu.............................6-3
6.3. The Password Directory (Sample Data Shown) ........................6-5
7.1. The Audit Log ...........................................7-5
7.2. The Utilities Menu ........................................7-7
A.1. Console Port Interface (DTE) ................................Apx-1
A.2. Modem Port Interface (DCE) ................................Apx-1
ii
SRM-100 - Secure Rack Modem, User's Guide Table of Contents

1. Introduction
The SRM-100 Secure Rack Modem is designed for applications that require secure, dial-up
access to console ports on rack mounted equipment. WTI's Secure Rack Modem can recognize
up to 100 passwords, track activity for each password and create a log record of successful
and/or unsuccessful access attempts.
Password Protected Access
Up to 100 User Passwords can be stored in the SRM's non-volatile memory. Each User
Password can be assigned a user name for easy reference, and an optional Dial Back number
which instructs the unit to call the user at a predefined number before allowing access. A
separate System Password restricts access to the SRM command mode, this allows the system
administrator to contact the unit via modem in order to change parameters or check access
activity. Access to the SRM Command Mode via the Console Port can also be password
protected.
Access Activity Logs
The SRM-100 provides two convenient ways to track access activity; the Audit Log and the
Password Directory. The Audit Log lists the 100 most recent connection attempts, including
the time, date, password entered, port used, call duration, and reason for disconnect. The
Password Directory displays user names, passwords and dial back numbers, and counts use of
each individual password. The Audit Log and Password Directory can only be viewed by the
System Administrator; callers who log on with a User Password are not allowed to view these
screens.
Three Different Operating Modes
The SRM-100 provides three distinct operating modes; the User Mode, the Command Mode,
and the Unsecured Mode.
·User Mode: Provides password protected access to the secure device connected to the
SRM's serial modem port.
·Command Mode: Provides password protected access to the SRM Command Menus,
which are used to define passwords and select configuration parameters.
·Unsecured Mode: When this mode is activated, the SRM will function similar to an
unsecured modem; callers are allowed to access the secure device without entering a
password.
1-1

Features
·Password Protected Command Mode
·Recognizes Up to 100 User-Defined Passwords
·Tracks Access Attempts and Password Activity
·Requires Only One 19 Inch Rack Unit.
·Filtered, Surge Protected Power Supply.
·AC and -48 Volts DC Powered Versions.
Typographic Conventions
Throughout this manual, typefaces and characters have been used to denote the following:
COURIER FONT Indicates characters typed on the keyboard. For example, /H or /G.
[Bold Font] Text set in bold face and enclosed in square brackets, indicates a specific
key. For example, [Enter] or [Esc].
1-2
SRM-100 - Secure Rack Modem, User's Guide Introduction

2. Unit Description
2.1. Front Panel
ÀON Indicator: Lights when power is applied to the unit.
ÁRDY: Flashes to indicate that the unit is ready to receive calls or enter the Command
Mode.
ÂPASS: Lights when a caller has entered a valid password and has been allowed to access
the connected device.
ÃDCD: Lights when DCD is high at the Modem Port.
ÄRXD: Lights when RXD is high at the serial Modem Port.
ÅTXD: Lights when TXD is high at the serial Modem Port.
ÆRTS: Lights when RTS is high at the serial Modem Port.
ÇCTS: Lights when CTS is high at the serial Modem Port.
ÈDTR: Lights when DTR is high at the serial Modem Port.
Notes:
•Normally, the DTR signal must be high in order for the modem to communicate
with the secure device. If the DTR signal is low, the SRM-100 will prompt callers
to enter a password, but will disconnect when a valid User Password is entered.
•When the Ignore DTR option (See Section 5.3) is enabled, the SRM-100 will
ignore the DTR signal at the serial Modem Port. This allows the serial Modem
Port to be connected to a device that does supply a DTR line.
2-1
Figure 2.1: Front Panel (Not to Scale)

2.2. Back Panel
ÀPower Input: (DC Unit Shown) The DC version includes a dual-bus terminal block for
-48 VDC operation and a ground screw. The AC version includes an IEC-32 inlet for
connection to a three wire (grounded) power cord (supplied with unit).
ÁPower Switch
ÂVoltage Selector Switch: (AC Units Only) For selecting 115 VAC or 230 VAC
operation .
ÃDefault Button: Resets unit to default parameters and erases the Password Directory as
described in Section 4.4.
Note: The default procedure will clear all menu-selected parameters, and erase the
Password Directory.
ÄSetUp Switches: Eight DIP switches, which select the default Modem Baud Rate,
Flow Control, Parity, Rings to Answer, Compression, Speaker (On/Off) and Security
Mode. For more information on the SetUp Switches, refer to Section 4.3.
ÅConsole Port: For connection to your PC, terminal, or other device. Allows access to
Command Mode. DB9, RS232, DTE configuration. Note that the command mode can
also be accessed via modem as explained in Section 5.1.2.. Appendix A.1 describes the
Console Port interface.
ÆModem Port: For connection to the secure device. The SRM-100 will protect dial-up
access to this device by requiring a password and/or calling the user back at a predefined
number. Appendix A.2 describes the Modem Port interface.
ÇTelco Line: For connection to your telecommunications (telephone) line. The RJ11 Jack
labeled "Wall" or "Line" is used for connection to your telco line. The Jack labeled
"Phone" is not used.
2
SRM-100 - Secure Rack Modem, User's Guide Table of Contents
Figure 2.2: Back Panel (DC Version Shown)

3. Getting Started
This section provides a brief introduction to the procedures that are used to communicate with
the SRM unit and access the configuration menus. For more detailed instructions regarding
installation and configuration, please refer to Sections 4 through 6.
3.1. Applying Power to the Unit
Connect an appropriate power source to the SRM unit. Note that the SRM is available in both
AC and DC powered versions.
·AC Units: Set the Voltage Selector Switch (located on the SRM back panel) to the
appropriate voltage. Connect the supplied power cable to the receptacle on the SRM back
panel, then connect the plug to a suitable AC outlet.
·DC Units: Remove the protective cover from the DC terminal block, switch off the DC
power source, and attach the wires from the -48 VDC power source to the screw terminals.
Connect your ground line to the grounding screw, then replace the protective cover and
switch the DC power source back on.
CAUTIONS:
•This device should only be operated with the type of power source indicated
on the instrument nameplate. If you are not sure of the type of power service
available, please contact your local power company.
•Reliable earthing (grounding) of this unit must be maintained. Particular
attention should be given to supply connections when connecting to power
strips, rather than direct connections to the branch circuit.
After connecting the unit to the power source, press the Power Switch to the On position. The
ON indicator should light, and after a brief pause, the RDY indicator should begin to flash.
3.2. Connecting a PC to the Console Port
For this overview, a PC will be connected to the SRM Console Port. This will allow you to
access the Command Mode and display the menus which are used to select configuration
parameters, check connection activity, and define and display user passwords.
Note: Although this overview demonstrates the procedure for communicating with
the unit via the Console Port, the Command Mode can also be accessed via modem
as described in Section 5.1.2.
To connect your PC to the SRM Console Port, proceed as follows:
1. Attach a standard null modem cable to a COM Port on your PC. Make certain to connect
to the COM port that is used by your communications program (e.g. ProComm).
2. Connect the other end of the cable to the Console Port, located on the SRM back panel.
For a description of the Console Port interface, please refer to Appendix A.
3-1

3.3. Communicating with the SRM-100
In order to communicate with the SRM unit for the first time, you must set your
communications program (e.g. ProComm) to match the default Console Port parameters. Note
that after you have accessed command mode, you can then use the General Parameters Menu to
select other Console Port parameters as described in Section 5, and then reset your
communications program accordingly.
Start your communications program (e.g. ProComm), and set it to match the following default
Console Port parameters:
·9600 bps
·8 Data Bits, 1 Stop Bit
·No Parity
Note: This overview assumes that first time set-up of the SRM unit will be
performed via a local terminal connected to the SRM Console Port. If necessary,
first time set-up can also be performed via modem; in this case, access the SRM
Command Mode as described in Section 5.1.2.
After setting the communications program to match the default Console Port parameters,
proceed as follows:
1. Press [Enter] to activate the SRM Command Mode.
a) If the Console Port Password has previously been defined, the SRM will display a
password prompt. Key in the Console Port Password, or System Password
(Default = SUPER) and press [Enter].
b) If the Console Port Password has not been defined, you will be granted immediate
access to the SRM command mode.
2. After a brief pause, the unit should display the Help Screen shown in Figure 3.1, followed
by the "SRM>" command prompt.
3. If the Command Prompt and Help Screen are not displayed, check to make certain that the
correct communications parameters have been selected, cable connectors are firmly
seated, and that the cable has been connected to the COM Port that is used by your
communications program.
When the "SRM>" command prompt is displayed, you can invoke the commands listed in the
Help Menu to display the various configuration menus and status screens.
3-2
SRM-100 - Secure Rack Modem, User's Guide Getting Started

For the purpose of this overview, it is only recommended to review the information on each
menu in order to familiarize yourself with the unit; it is not necessary to actually enter
parameters at the configuration menus at this time.
1. View/Set General Parameters: From the command prompt, type /G and press [Enter].
The General Parameters Menu will be displayed. This menu is used to set Console Port
communication parameters, define the System Password, Console Port Password, and
select other general parameters as described in Section 5.2. Press [Esc] to return to the
Main Menu.
2. View/Set Modem Parameters: Type /M and press [Enter] to display the Modem
Parameters menu. This menu is used to select communication parameters for the SRM's
internal modem as described in Section 5.3. Press [Esc] to return to the
Main Menu.
3. Utilities Menu: Type /U and press [Enter] to display the Utilities Menu. This menu is
used to access SRM-100 command features, such as the Pass-Through Mode (see
Section 7.6.8), the Download Parameters Function (see Section 8.1), and others. Press
[Esc] to return to the Main Menu. For more information on the Utilities Menu, please
refer to Section 7.6.
4. Other Menus: At this point, commands such as "View Password Directory" and "View
Audit Log" will not display much information. This is due to the fact that the Password
Directory has not been defined yet, and the Audit Log has not had the opportunity to
record connection activity. If you wish to display these menus, key in the appropriate
command and then press [Enter]. To exit a menu, press [Esc] to return to the
Main Menu.
3-3
SRM-100 - Secure Rack Modem, User's Guide Getting Started
Secure Rack Modem Version: 1.13 Site: (undefined)
COMMANDS
/H Display Help Screen /C View Audit Log
/G View/Set General Parameters /U Utilities
/M View/Set Modem Parameters /X Exit/Disconnect
/E Edit Password Directory
/D View Password Directory
Modem Type: MT2834ZPX
Reset String: ATZ
Init String: AT&C1&D2E0Q1V1M1S0=1&E1&E15S13=0
Hang-Up String: (undefined)
MODEM PORT SETTINGS
Baud Rate: 9600 Result Codes: Verbose
Flow Control: RTS/CTS Speaker: On
Local Echo: Off Error Control: On
Rings to Answer: 1 Compression: On
Quiet Mode: On Ignore DTR: Off
Figure 3.1: The SRM-100 Help Screen