Western Telematic SRM-100 manuale d’uso

WTI Part No.: 13051 Rev. D SRM-100 Secure Rack Modem Firmware Version 1.13 and Higher User's Guide 5 Sterling · Irvine · California 92618-2517 (949) 586-9950 · Toll Free: 1-800-854-7226 Fax: (949) 583-9514 · http://www.wti.com[...]

Table of Contents 1. In tro duc tion ............................................. 1-1 2. Unit De scrip tion .......................................... 2-1 2.1. Front Panel .......................................... 2-1 2.2. Back Panel .......................................... 2-2 3. Get ting Started ........................................... 3-1[...]

7. Op era tion .............................................. 7-1 7.1. SRM Op er at ing Modes .................................... 7-1 7.2. Pass word Func tions ..................................... 7-1 7.2.1. The Sys tem Pass word ............................... 7-2 7.2.2. The Con sole Port Pass word ............................ 7-2 7.2.3. User Pa[...]

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 Acce[...]

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[...]

2. Unit Description 2.1. Front Panel À ON Indicator: Lights when power is applied to the unit. Á RDY: Flashes to indicate that the unit is ready to receive calls or enter the Command Mode. Â PASS: Lights when a caller has entered a valid password and has been allowed to access the connected device. Ã DCD: Lights when DCD is high at the Modem Po[...]

2.2. Back Panel À Power 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). Á Power Switch  Voltage Selector Switch: (AC Units Only) For selecting 115 VAC or 230 VAC op[...]

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 S[...]

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 S[...]

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 wil[...]

5. Exit/Disconnect: When you have finished exploring the various SRM command menus, return to the "SRM>" Command Prompt, and then type /X and press [Enter] to exit from command mode. This completes the introductory overview of the SRM-100. In order to demonstrate the SRM's security functions, you must completely install the unit, [...]

4. Hardware Installation 4.1. Rack Mounting Installation When installing the SRM-100 is an instrument rack, the following factors must be accounted for: 1. Enclosed Racks: Enclosed racks must provide adequate ventilation. Make certain that the rack is not overly crowded, and note that each unit in the rack generates its own heat. An enclosed rack s[...]

4.2.2. DC Powered Units When connecting the SRM to a -48 VDC power source, first remove the protective cover from the DC terminal block. Switch off the DC power source, then attach the wires from the power source to the screw terminals, and connect your ground line to the labeled ground screw. Next, replace the protective cover, and switch the DC p[...]

4.3.2. Default Flow Control Format (Sw3) SetUp Switch three selects the default flow control (handshaking) format for the serial Modem Port. The Modem Port flow control format can also be selected via the Modem Parameters Menu. If the unit is reinitialized, the flow control format will return to the setting specified b y SetUp Switch three. Default[...]

4.3.5. Default ARQ/Compression Status (Sw6) SetUp Switch six selects the default enabled/disabled status for the ARQ/Compression feature. The ARQ mode and compression feature can also be enabled or disabled via the Modem Parameters menu (/M). If the SRM-100 is reset to default parameters, these features will return to the default settings selected [...]

4.4. Initialize Unit to Default Settings If SetUp Switch settings are changed, new parameters will not take effect until the SRM-100 is initialized. CAUTION: After initialization, menu selected parameters will return to the settings specified by the SetUp Switches and the Password Directory will also be erased. Note: To reset the SRM to default par[...]

4.5.3. Telco Line Use a standard RJ11 phone cable to connect your phone line outlet to the Telco Line port on the SRM back panel. If the SRM's Telco Line port includes two RJ11 connectors, connect your phone line to the connector labeled "Wall" or "Line". 4 - 6 SRM-100 - Secure Rack Modem, User's Guide Hardware Install[...]

5. Set-Up and Configuration This section describes the procedure for configuring the SRM unit to fit the needs of your installation. Note that the default SRM parameters are intended to fit the requirements of most applications. Before configuring the unit, please review the default settings to determine if any parameters must be changed. In many c[...]

5.1.2. Access via Modem To access the SRM Command Mode via modem, dial the number for the phone line connected to the SRM unit. When the Password Prompt is displayed, key in your System Password (Default = SUPER) and press [Enter] . The SRM will display the Help Screen as shown in Figure 5.1. Note that the password is case sensitive. If the System [...]

5.2. The General Parameters Menu To access the General Parameters menu (Figure 5.2), activate the command mode, then type /G [Enter] . To change parameters, key in the number for the desired item, press [Enter] , then follow the instructions in the submenu. 1. System Password: This password protects access to the Command Mode. When a caller connect[...]

2. Console Port Password: When the Console Port Password is defined, the SRM will display a prompt before allowing access to the SRM Command Mode via the Console Port. (Up to 16 characters, Default = undefined). Notes: • If the Console Port Password is not defined, users are allowed to access the SRM command mode via the Console Port without a pa[...]

9. Password Attempts: The number of password attempts that will be accepted when a user attempts to access the SRM via modem. If this number is exceeded, the SRM will terminate the modem connection. (Default = 3). Note: If the number of password attempts is set to zero, the User Password requirement is disabled. In this case, if the unit is contact[...]

5.3. The Modem Parameters Menu The Modem Parameters Menu selects communication parameters for both the SRM’s internal modem and the SRM's serial Modem Port. To display the Modem Parameters Menu, access the Command Mode as described in Section 5.1, then type /M and press [Enter] . To change the setting for any item in this menu, key in the nu[...]

5. Local Echo: Enables / disables the local echo for the SRM’s internal modem. (Default = Off). 6. Rings to Answer: Determines how many rings will elapse before the SRM’s internal modem answers an incoming call. Note that if the SRM is reinitialized, the modem will return to the setting selected by SetUp Switch 5. (Default Determined by SetUp S[...]

15. Ignore DTR: When this item is enabled, the SRM-100 will ignore the DTR hardware input line at the serial Modem Port. This allows the serial modem port to be connected to a device that does have a DTR line. (Default = On) When you have finished selecting modem configuration parameters, press [Esc] to return to the main Help Screen. User-selected[...]

6. The Password Directory When the SRM-100 is properly configured, each inbound caller will be prompted to enter a password before being allowed to access the secure device. The Password Directory is basically a listing of all valid user passwords, user names, and their associated Dial Back numbers. The SRM-100 will accept up to 100 User Passwords,[...]

6.1. Add Name / Password To add new User Passwords to the directory, go to the Edit Password Directory Menu (/E), type 1 (Add Name / Password) and press [Enter] . The SRM will display a submenu that contains the following items: 1. Name: Assigns a Name to each User Password. Note that the SRM will not prompt callers to enter the User Name in order [...]

6.2. Edit / Delete from List Options 2 and 3 in the Edit Password Directory Menu are used to edit and/or delete passwords from the Password Directory. The difference between these two options is the manner in which the desired password is selected. When Option 2 is used, the desired password is selected from a list of all passwords. When Option 3 i[...]

5. Delete Password: To delete the selected password, type 5 and press [Enter] . a) The SRM-100 will ask for confirmation, and then delete the selected password from the directory. Note that passwords cannot be “undeleted”. After you confirm that the selected password should be deleted, the SRM will display the next password in the list. b) To c[...]

4. Delete Password: To delete the selected password, type 5 and press [Enter] . a) The SRM-100 will ask for confirmation, and then delete the selected password from the directory. Note that passwords cannot be "undeleted". After you confirm that the selected password should be deleted, the SRM will display the next password in the list. b[...]

2. Password: The User Password that is currently defined for this name. Note that the password is case sensitive. 3. Dial Back Number: The Dial Back Number currently defined for this name. Note that if the Dial Back Number has not been defined, this field will read "undefined". 4. Activity: The number of times this password has been used [...]

7. Operation 7.1. SRM Operating Modes The SRM-100 provides three separate operating modes; the User Mode, the Command Mode, and the Unsecured Mode. 7.1.1. User Mode The User Mode is activated when a caller enters a User Password at the login prompt. The User Mode only allows the caller to access the secure device which is connected to the serial mo[...]

7.2.1. The System Password The System Password restricts user access to the SRM Command Mode via modem and via the Console Port. The Command Mode allows system administrators to invoke commands to select configuration parameters, edit the password directory, and review connection activity. The SRM allows definition of one System Password, which is [...]

7.2.4. Dial Back Numbers Both the System Password and the User Passwords allow definition of a Dial Back Number. When a Dial Back Number has been defined for a given password, callers who enter that password will not be granted immediate access. Instead, when a valid password is entered, the SRM will disconnect, call the defined Dial Back Number fo[...]

7.3. Suppressing the Confirmation Prompt The SRM will display a confirmation prompt before executing commands such as /X (exit/disconnect), or performing tasks such as clearing the Audit Log. Normally, this provides one last chance to cancel a command before it is executed. In some cases, you may wish to execute a command without being prompted for[...]

7.5. Viewing the Audit Log The Audit Log provides a means to track password use and access attempts. Item 11 in the General Parameters menu (/G) determines which type of access attempts will be recorded. The Audit Log can be configured to record all connection attempts, only successful attempts, or only unsuccessful attempts. Note that the Audit Lo[...]

As shown in Figure 7.1, the Audit Log screen includes the date, time, call duration, port used, user name, password entered, and exit status. Note the following: 1. Port Used: Lists the port used for each connection attempt: • M(out): An outbound call placed by the modem. This usually indicates that the SRM has performed a dialback in response to[...]

7.6. The Utilities Menu The Utilities Menu allows access to a series of command functions that are related to general operation and maintenance of the SRM unit. To display the Utilities menu, access the SRM Command Mode as described in Section 5.1, then type /U and press [Enter] . The menu shown in Figure 7.2 will appear. The various functions of t[...]

7.6.4. Default Parameters This option allows the system administrator to reset the unit to default parameters without deleting the Password Directory. To clear all menu selected parameters except the Password Directory, and return the SRM-100 to its default configuration, first access the Utilities Menu as described in Section 7.6. When the Utiliti[...]

7.6.7. Download Parameters This function is used to save user-selected SRM parameters to an ASCII text file on your PC or control device. To save SRM parameters, please refer to the instructions in Section 8.1. 7.6.8. Pass-Through Mode (Console-Modem) The Pass-Through Mode allows communication between the device connected to the Console Port and th[...]

8. Saving and Restoring Parameters and Password Directory After the SRM-100 has been properly configured and the Password Directory has been defined, configuration parameters and the Password Directory can be saved as an ASCII text file. Later, if the configuration is accidentally altered, the file can be uploaded to automatically reconfigure the u[...]

8.2. Restoring Saved Parameters Once menu selected parameters and the Password Directory have been saved, the parameters file can be uploaded to the SRM to quickly configure the unit without the need to manually enter each parameter and password. To restore saved parameters, proceed as follows: Note: When the "Upload Parameters" function [...]

A. Interface Descriptions A.1. Console Port A.2. Modem Port Apx- 1 Figure A. 1 : Console Port Interface (DTE) Figure A. 2 : Modem Port Interface (DCE)[...]

B. Specifications Compatibility: ITU V.42bis, V.42, Enhanced V.34, AT&T V.32terbo, ITU V.32bis, V.32, V.22bis, V.22, Bell 212A and 103/113, ITU V.17, Group 3 T.4, T.30 and EIA TR-29 Class 2. Command Set: "AT" Commands Error Correction: V.42 (LAP-M or MNP 3 & 4) Error Correction. Data Compression: V.42bis, (4:1 throughput) or MNP 5[...]

C. Customer Service Customer Service hours are from 8:00 AM to 5:00 PM, PST, Monday through Friday. When calling, please be prepared to give the name and make of the unit, its serial number and a description of its symptoms. If the unit should need to be returned for factory repair it must be accompanied by a Return Authorization number from Custom[...]

Index A AC Power ......................... 4-1 Activity Counters .................. 6-6, 7-7 Zero ........................... 6-6 Add Name / Password .................. 6-2 ARQ/Compression .................... 4-4 AT Commands ...................... 7-9 Audit Log ...................... 5-5, 7-7 Viewing ......................... 7-5 B Back Panel Comp[...]

F Flow Control Format ................ 4-3, 5-6 Front Panel ........................ 2-1 G General Parameters Menu ............ 5-3 to 5-5 Grounding ...................... 3-1, 4-1 H Handshake Format ................. 4-3, 5-6 Hang-Up String ...................... 5-7 Hardware Installation .............. 4-1 to 4-6 I Ignore DTR ....................[...]

S Save Password ...................... 6-2 Saving Parameters .................... 8-1 Secure Device ....................... 4-5 Security Mode .................... 5-5, 7-1 Default ......................... 4-4 Send Test Message .................... 7-8 Serial Modem Port ................. 2-2, 4-5 Setting Clock ....................... 5-4 SetUp Swit[...]