Lightwave Communications SCS1620 User manual

Secure Console Server
Model SCS1620
Product Guide
Part Number 15.00.032
Revision B
February 2002

SCS1620 Product Manual Lightwave Communications
Page ii www.lightwavecom.com

A Lantronix Company SCS1620 Product Manual
15.00.032 Rev. B Page iii
Copyright & Trademark
© 2002, Lightwave Communications, a Lantronix Company. All rights reserved. No part of the
contents of this book may be transmitted or reproduced in any form or by any means without the
written permission of Lantronix. Printed in the United States of America. Also electronically
distributed via Adobe PDF file format.
Ethernet is a trademark of XEROX Corporation. UNIX is a registered trademark of The Open
Group. Windows 95, Windows 98, Windows 2000, and Windows NT are trademarks of
Microsoft Corp. Netscape is a trademark of Netscape Communications Corporation. Adobe
Acrobat and PDF are trademarks of Adobe Corporation. Other trademarks and service marks are
held by their respective owners.
SCS1620 Product Guide
Lightwave Communications, Inc. (LCI)
100 Washington Street
Milford, CT 06460 USA
Phone (800) 871-9838 • (203) 878-9838
Fax: (203) 874-0157
Email: info@lightwavecom.com
Internet: www.lightwavecom.com
Lantronix
15353 Barranca Parkway
Irvine, CA 92618 USA
Phone: (949) 453-3990
Fax: (949) 453-3995
Internet: www.lantronix.com

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Disclaimer & Revisions
Operation of this equipment in a residential area is likely to cause interference in which case the
user, at their own expense, will be required to take whatever measures may be required to correct
the interference.
Attention: This product has been designed to comply with the limits for a Class A
digital device pursuant to Part 15 of FCC Rules. These limits are designed to provide
reasonable protection against such interference when operating in a commercial
environment. This equipment generates, uses, and can radiate radio frequency
energy, and if not installed and used in accordance with this guide, may cause
harmful interference to radio communications.
Changes or modifications to this device not explicitly approved by Lantronix will void the user's
authority to operate this device.
The information in this guide may change without notice. The manufacturer assumes no
responsibility for any errors that may appear in this guide.
Date Rev. Part
No. Comments
February 2002 B 15.00.032 Manual style updates. Kernel v2.01 enhancements

A Lantronix Company SCS1620 Product Manual
15.00.032 Rev. B Page v
Declaration of Conformity
(according to ISO/IEC Guide 22 and EN 45014)
Manufacturer’s Name & Address:
Lightwave Communications, 100 Washington Street, Milford, CT 06460 USA
Declares that the following product:
Product Name & Model: Secure Console Server 1620 (SCS1620)
Conforms to the following standards or other normative documents:
Safety:
EN60950: 1992+A1, A2, A3, A4, A11
Electromagnetic Emissions:
EN55022 Class A: 1998 (CISPR 22, Class A: 1993, A1: 1995, A2: 1996)
EN 1000-3-2/A14: 2000
EN 10003-3: 1994
Electromagnetic Immunity:
EN55024: 1998 Information Technology Equipment-Immunity Characteristics:
EN61000-4-2: 1995 Electro-Static Discharge Test
EN61000-4-3: 1996 Radiated Immunity Field Test
EN61000-4-4: 1995 Electrical Fast Transient Test
EN61000-4-5: 1995 Power Supply Surge Test
EN61000-4-6: 1996 Conducted Immunity Test
EN61000-4-8: 1993 Magnetic Field Test
EN61000-4-11: 1994 Voltage Dips & Interrupts Test
Supplementary Information:
This Class A digital apparatus complies with Canadian ICES-003 (CSA) and has been verified as
being compliant within the Class A limits of the FCC Radio Frequency Device Rules (FCC Title
47, Part 15, Subpart B CLASS A), measured to CISPR 22: 1993 limits and methods of
measurement of Radio Disturbance Characteristics of Information Technology Equipment. This
product also complies with the requirements of the Low Voltage Directive 72/23/EEC and the
EMC Directive 89/336/EEC.
This product carries the CE mark since it has been tested and found compliant with the following
standards:
Safety: EN 60950
Emissions: EN 55022 Class A
Immunity: EN 55024

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Table of Contents
1.0 System Description .........................................................................................9
1.1 System Features ..........................................................................................9
1.2 Hardware Features ....................................................................................10
2.0 System Overview...........................................................................................11
2.1 Typical Use ................................................................................................11
2.2 System Components..................................................................................11
2.3 Access Control...........................................................................................11
2.4 Connection Formats..................................................................................11
2.4.1 Serial...................................................................................................11
2.4.2 Network..............................................................................................11
2.4.3 Modem...............................................................................................12
2.4.4 Power Manager..................................................................................12
2.5 Device Port Buffer.....................................................................................12
2.6 System Resource Information....................................................................12
3.0 Installation.....................................................................................................13
3.1 Physical Installation....................................................................................13
3.2 Power.........................................................................................................13
3.2.1 AC Input.............................................................................................13
3.2.2 DC Input.............................................................................................14
3.3 Connecting a Terminal (Console)..............................................................14
3.4 Connecting to the Device Port..................................................................15
3.5 Connecting the Network Port ...................................................................16
3.6 Connecting the Modem Port.....................................................................16
3.7 Power Manager Port..................................................................................17
4.0 Quick Start Set-up.........................................................................................18
4.1 Method #1 - Using Front Panel Display.....................................................18
4.2 Method #2 - Quick Start via Telnet ...........................................................20

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5.0 SCS1620 Administration ...............................................................................21
5.1 System Administrator Functions................................................................21
5.1.1 Log In as System Administrator..........................................................21
5.1.2 Logging Out.......................................................................................22
5.2 Security and Passwords.............................................................................22
5.2.1 Change the sysadmin password.........................................................22
5.2.2 Change the root password.................................................................22
5.3 The setup User Interface..........................................................................23
Auto-Run of setup on Initial Startup...............................................................23
Manually using setup......................................................................................24
5.3.1 Start of setup Script..........................................................................26
5.3.2 Configure Hostname and IP...............................................................27
5.3.3 Configure Timezone...........................................................................31
5.3.4 Configure DNS...................................................................................32
5.3.5 Configure Services..............................................................................35
5.3.6 Configure Modem..............................................................................37
5.3.7 PPP, and CHAP or PAP ......................................................................41
5.3.8 Configure NIS.....................................................................................44
5.3.9 Configure LDAP..................................................................................46
5.3.10 Configure the Firewall........................................................................48
5.3.11 Done...................................................................................................53
5.4 SAVE..........................................................................................................56
5.4 Reboot.......................................................................................................57
6.0 Commands....................................................................................................58
6.1 Summary of Commands ............................................................................58
6.1.1 SAVE Command.................................................................................58
6.1.2 reboot Command.............................................................................59
6.1.3 poweroff Command.........................................................................59
6.2 System Commands....................................................................................60
6.3 Device Commands.....................................................................................65
6.4 Creating and Managing Users...................................................................67
6.5 End User commands..................................................................................71
6.5.1 User Log In .........................................................................................71
6.5.2 Escape Sequence ...............................................................................72
6.5.3 Break Sequence..................................................................................72
7.0 Modem Setup ...............................................................................................73
7.1 Installing a Modem Card...........................................................................73
7.2 Modem Initialization..................................................................................74
8.0 User Access and Functions............................................................................75
8.1 Terminal Port.............................................................................................75
8.2 Network Port.............................................................................................75
8.3 Modem Module.........................................................................................75
8.4 Selecting a Device Port .............................................................................76
8.5 Direct Mode ..............................................................................................76

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Appendix A – Terminal Port and Adapter Pinouts ..................................................78
Appendix B – Flash Update Procedure....................................................................84
B.1 Updating the SCS1620 Software...............................................................84
B.1.1 Software Download............................................................................84
B.2 Flash Replacement Procedure...................................................................84
Appendix C – System Specifications........................................................................87
C.1 Physical......................................................................................................87
C.2 Environmental............................................................................................87
C.3 Electrical ....................................................................................................87
C.3.1 AC Power ...........................................................................................87
C.3.2 DC Power ...........................................................................................88
C.4 Interface.....................................................................................................88
C.4.1 Terminal and Device...........................................................................88
C.4.2 Network..............................................................................................88
C.4.3 Modem...............................................................................................88
C.4.4 Power Manager..................................................................................88
C.5 Compliance and Certification....................................................................89
Appendix D – DC Power Specifications...................................................................90
D.1 DC Power Source ......................................................................................90
D.2 Overcurrent Protection..............................................................................90
D.3 DC Supply Connector................................................................................90
Appendix E – Hexadecimal ASCII Code..................................................................91
Appendix F – Some UNIX Command Help..............................................................93
F.1 less command............................................................................................93
F.2 vi Editor commands...................................................................................95
F.2.1 Using vi...............................................................................................95
F.2.2 vi Modes.............................................................................................95
F.2.3 Using vi in Command mode...............................................................96
F.2.4 Closing a file opened in vi..................................................................96

A Lantronix Company SCS1620 Product Manual
15.00.032 Rev. B Page 9
1.0 System Description
The Lightwave Secure Console Server 1620 (SCS1620) is a fully customizable
console server offering secure encryption and authentication. The SCS1620 is a
compact solution for remote and local management of up to 16 devices with
RS-232C compatible serial consoles.
1.1 System Features
•Connect up to sixteen (16) RS-232 serial consoles
•10/100-baseT IP network compatible
•ID / Password Security, configurable access rights
•OpenSSH version 2 security
•Open LDAP
•NIS capable for remote database rights
•Modem support for PPP (PAP or CHAP) and Callback
•No unintentional break will ever be sent to attached servers
•Local access through TERMINAL port (the 1620's Console port)
•Support for Lightwave PCU8 Power Control Unit
•Field upgradeable Flash memory
MODEM Module
(optional)
RS-232 DEVICE
Ports (1-16)
TERMINAL
(RS-232) Port
POWER MANAGER
Port (to PCU8)
10/100
NETWORK Port
Redundant Power Inputs
(AC shown; 48VDC available)
Two-line
LCD Display Front Panel
Setup Switches

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1.2 Hardware Features
•1RU tall (1.75 inches) rack-mountable Server
•One (1) 10/100 baseT Network Port for connection to your IP network
•Sixteen (16) serial DEVICE ports, RS232, connected via Category 5
(RJ45) wiring
•One (1) serial TERMINAL port, for VT100 console or PC with emulation
•One (1) POWER MANAGER port, DB9F serial interface, for Lightwave
PCU8 Power Control Unit
•Optional: One (1) Modem Module, for analog Dial-Up connections
•256KB-per-port Buffer Memory for DEVICE ports
•Front Panel 2-line backlit LCD display and pushbutton controls
•128MB FLASH Memory, 128MB RAM
•Redundant Power Inputs
•Power Options: Universal AC (100-240V) or -48VDC
•Convection cooled, silent operation, low power consumption

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2.0 System Overview
2.1 Typical Use
The SCS1620 is often used to manage up to 16 serial devices (servers, routers,
switches, etc.) where security is mandatory. Each attached device must have an
RS-232C compatible serial console port.
A User accesses the attached servers with keyboard commands from their local
terminal, through a network connection, or through a dial-up connection.
2.2 System Components
All system components are enclosed in a rack-mountable metal chassis. Each
chassis has 16 DEVICE ports, one TERMINAL port, and one NETWORK port.
An optional MODEM module is available and can be added at any time. Power
supplies are factory-installed, and may be either for universal AC operation, or for
–48 VDC operation. The SCS1620 front panel features an LCD display and
pushbuttons for access to some system information.
2.3 Access Control
Access to attached servers is controlled by assigning access rights to system
user profiles. Each user profile is assigned an ID, a password, and access rights.
Users must have a user profile to access any of the attached devices.
The System Administrator determines and configures the profile settings of the
SCS1620. Other access options may include externally-configured authentication
methods using NIS, OpenLDAP, or other OS-based methods.
2.4 Connection Formats
2.4.1 Serial
All devices attached to both the device ports and the terminal port must support
the RS-232C standard. Category 5 cabling with RJ45 connections is used for the
Device port connections and for the Terminal Port.
Device ports (numbered 1 through 16) can be individually configured as DTE or
DCE devices, and support seven (7) baud rate options of 2400, 4800, 9600,
19200, 38400, 57600 and 115200 baud.
2.4.2 Network
The SCS1620 network interface is a 10/100 BaseT connector, for use with a
conventional TCP/IP network using standard RJ45-terminated Category 5
cables. The network parameters must be configured by the system administrator
before the Console Server may be accessed over the network.

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2.4.3 Modem
The optional Modem module connects to a conventional telephone line using
standard RJ11 modular telephone cable. The analog modem on the card
connects at speeds up to 38,400 baud. The Modem is required for any PPP
features.
With the Modem installed, the SCS1620 supports:
•Plain Text TTY
•PPP connection, with PAP or CHAP authentication
•Callback connection
2.4.4 Power Manager
The POWER MANAGER port is provided for connection to Lightwave's Power
Control Unit, the PCU8. This serial interface uses a DB9 female connector. The
Power Manager port is configured as Port 17, and is similar to the DEVICE ports.
2.5 Device Port Buffer
Each device port stores 256 KB (approximately 400 screens) of I/O data in a
FIFO buffer. This data may be viewed while the user is not directly interacting
with the attached device.
2.6 System Resource Information
The SCS1620 is programmable using OS-level commands and options. The
System Administrator (sysadmin) configures the product using a command-line
interface or one of several prepared scripts, using UNIX / Linux commands.
There are numerous resources on the Internet (and elsewhere) providing
information about security options, programming tools and techniques and
configuration advice. A few of the Internet sites are listed below.
•SSH info: www.openSSH.org
•RFC's (the standards and details behind the Internet): www.rfc-editor.org
•RFC1700; assigned numbers: www.faqs.org/rfcs/rfc1700.html
•PuTTY, a free Win32 Telnet/SSH Client (recommended):
http://www.chiark.greenend.org.uk/~sgtatham/putty/
•Security: www.bastille-linux.org
•An online manual on Linux security:
http://www.linuxdoc.org/LDP/solrhe/Securing-Optimizing-Linux-RH-
Edition-v1.3/
The following sites have more information about Linux (from basic to advanced):
•www.kernel.org
•www.linuxdoc.org
•www.linuxlinks.com

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3.0 Installation
The SCS1620 uses convection cooling to dissipate excess heat. Be careful to not
block the air vents on the sides of the unit. If mounted in an enclosed rack, it is
recommended that the rack have a ventilation fan to provide adequate airflow
through the unit.
3.1 Physical Installation
The SCS1620 may be installed either in an EIA-standard 19-inch rack (1U tall) or
as a desktop unit. For desktop use, four rubber feet are provided, and the rack
mount brackets may be removed.
3.2 Power
The SCS1620 consumes less than 20W of electrical power. The SCS1620 is
available as AC-powered models or DC-powered models, and offers redundant
input power connections.
3.2.1 AC Input
The AC version of the SCS1620 uses two universal auto-switching AC power
supplies for redundant operation. The power supplies accept AC input voltage
between 100-240 VAC with a frequency between 50/60 Hz. The system is fully
functional on either supply. The supplies are individually switched and fused, and
the AC inputs are isolated except for chassis ground.
AC power inputs and power switches on rear of SCS1620 chassis

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3.2.2 DC Input
The DC version of the SCS1620 accepts standard –48 VDC telco power. The
SCS1620 accepts two DC power inputs for supply redundancy. The DC power
Wago connectors are provided with the DC-powered systems, and the
connectors are also available separately from Lightwave.
See Appendix D for specifications regarding the DC power source.
3.3 Connecting a Terminal (Console)
The TERMINAL port (a Console port) is used for local access to the SCS1620
and the attached devices. A dumb terminal or computer may be attached to the
serial port if the port uses RS-232-C protocol and VT100 emulation is supported.
Inserting a serial Console cable in the TERMINAL port

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15.00.032 Rev. B Page 15
The default communication parameters for the TERMINAL port are:
•9600 baud,
•8 data bits,
•1 stop bit,
•No parity,
•Xon/Xoff flow control, and
•port type of DCE.
Adapters from Lightwave Communications may be used to connect the
TERMINAL port to the serial port on your console or other DTE device.
See Appendix A for adapter and port pinouts.
1. Attach the Lightwave adapter to your console (use PN 200.0066 Adapter
in most cases) or your PC's serial port (use PN 200.0070 Adapter).
2. Connect the Cat 5 cable to the adapter. Connect the other end to the
SCS1620 TERMINAL port.
3. Turn on the terminal or start your computer’s communication program.
3.4 Connecting to the Device Port
Any serial device that has a console port may be connected to the SCS1620 for
consolidated remote administration. Device Ports are individually configurable
(DEVICE_1 through DEVICE_16). The console port must support the RS-232-C
interface. Additionally, many servers must either have the serial port enabled as
a console, or must have the keyboard and mouse detached. Consult the server
hardware and/or software documentation for more information.
Connections on Rear of SCS1620, Device Ports in center
The default communication parameters for the Device ports are:
•9600 baud,
•8 data bits,
•1 stop bit,
•No parity,
•Xon/Xoff flow control, and
•port type of DCE.
Modem
Module Serial Device
ports Terminal
port
Power Manager
(PCU8) port
10/100 Network
port

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The DEVICE ports can be configured for baud rates of 2400 - 115.2K baud, and
as DTE or DCE. The data word must be 8/none/1 and employ Xon / Xoff flow
control.
3.5 Connecting the Network Port
The SCS1620’s network port (10/100 BaseT) allows remote access to the
attached devices and the system administrative functions.
The network parameters for the network port must first be set up before the
SCS1620 may be reached remotely.
See Section 4 for a Quick Start for setting up your Network Port. Also refer to the
setup
setupsetup
setup command in Section 5.3 for additional network configuration.
3.6 Connecting the Modem Port
An optional modem module is available for the SCS1620. The modem may be
installed at the factory or can be ordered separately for later installation.
SCS1620 modem module
The SCS1620 modem is an analog modem supporting connection rates up to
38,400 baud. The modem has a single RJ11-type analog telephone jack plus five
status LEDs. The user interface to the modem is identical to that found on the
terminal port or the network port. The Modem is configured as Device Port 19.
The default communication parameters for the MODEM port are:
•38400 baud,
•8 data bits,
•1 stop bit,
•No parity, and
•RTS/CTS flow control.

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The Modem is initially set up using the setup
setupsetup
setup program (see Section 5.3) of the
system. Refer to Section 7 for Modem Installation instructions, if installing a
modem into a working SCS1620 system.
3.7 Power Manager Port
The Power Manager port is configured as Device Port 17, and operates like the
other DEVICE ports, except that its physical interface is a DB9F serial connector.
The Power Manager port is intended for the Lightwave PCU8 Power Control Unit.
The default communication parameters for the POWER MANAGER port are:
•9600 baud,
•8 data bits,
•1 stop bit,
•No parity,
•Xon/Xoff flow control, and
•port type of DTE.
The Power Manager Port, like the DEVICE ports, can be configured for baud
rates of 2400 - 115.2K baud, and DTE or DCE. The data word must be 8/none/1
and employ Xon / Xoff flow control.

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4.0 Quick Start Set-up
Out of the box, the IP network port identity is set to a generic default value.
Quick Start gets your IP network port up and running quickly, so you may
administer the SCS1620 using your network.
Be sure to address the Security issues first when administering the system.
Quick Start assumes the system is plugged in and turned on, and that you
know the IP address that the SCS1620 must be set to in order to operate on
your network, and that you are ready to connect to your network port.
There are two methods to Quick Start the network connections:
•you may use the front panel display and buttons, or
•you may use your existing IP network
4.1 Method #1 - Using Front Panel Display
The front panel display and pushbuttons can be used to set up the basic network
interface, which will allow the sysadmin to access the SCS1620 using your
existing IP network.
Front Panel LCD Display and Pushbuttons
The front panel display initially shows SCS1620 (the server name) and the date
and time. Using the five pushbuttons, the sysadmin can change the IP settings,
Time features and Terminal settings. The front panel display will time out (without
accepting any unsaved changes) and return to 'date and time' if no buttons are
pressed for 30 seconds.
After changing the values for your network, the port will restart (the front panel
display will indicate 'restarting'), after which the network connection is active.
Use the front panel buttons to set up the basic network parameters. There is one
'SELECT' button and four arrow buttons (Up, Left, Right and Down). The front
panel can change the IP Address, Subnet Mask, Gateway and DNS settings;
Date/Time and Time Zone features; and Terminal (Console) port baud rate
settings.

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Use the arrow buttons to navigate from one option to another, or to increment or
decrement a numerical entry of the selected feature. Use SELECT to enter the
Edit mode of a chosen step, or to advance to the next step when editing.
1. To CHANGE the settings, press RIGHT ARROW to enter the display
programming mode, and to scroll between the available options (press
button again for additional steps). Have your information handy since the
display will time out if you take more than 30 seconds between entries.
Options include:
oNetwork Settings
oTerminal Settings
oRelease Date
oTime/Date Settings
oreturn to normal display
In this case, stop scrolling at the Network Settings display.
Normal Network Terminal Release Dates Time / Date Settings >
IP Setting Settings System Time Zone
Subnet Mask LCD Calendar
Gateway
DNS1
DNS2
2. When the display shows the feature that you wish to edit, press the
SELECT key to enter the editing mode. The display will show "Editing
Network Settings" (or other feature if chosen).
3. A cursor appears under one character of the existing IP address setting.
•Use the left or right arrows to move the cursor to the left or to the right
position. Use the Up and Down arrows to increment or decrement the
numerical value. Your new values will be 'saved' later.
•Note: You must change both the IP Address and the Subnet Mask
together for a valid IP address combination.
3. Again, use the left or right arrows to move the cursor to the left or to the
right position. Use the Up and Down arrows to increment or decrement the
numerical value. Press SELECT to choose the remaining options to edit.
4. When done, press the DOWN ARROW key again to 'Save Changes?',
followed by a Yes/No prompt. Use the arrow keys to choose Yes, and
press SELECT to save the changes.
•When you are done, the front panel returns to the Clock display.
•The Network Port will reset to the new settings, and can then connect
to your IP network for further administration.

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•If you take longer than 30 seconds between entries, the SCS1620 will
time out and exit; any of your unsaved changes will be ignored.
5. To REVIEW the saved settings, simply press the UP or DOWN arrows to
step through the current settings.
4.2 Method #2 - Quick Start via Telnet
Assuming you have a functioning IP network, and you know your workstation's IP
address, you can access the SCS1620 via telnet commands. If you add a route
to your workstation, you can use telnet to connect to the SCS1620, instead of the
Terminal Port. The default IP address of the SCS1620 is 10.0.0.1, with a subnet
mask of 255.0.0.0.
•For Windows 9x, from the DOS / command prompt, type:
route add 10.0.0.1 mask 255.0.0.0 <your workstation's IP address>
route add 10.0.0.1 mask 255.0.0.0 <your workstation's IP address>route add 10.0.0.1 mask 255.0.0.0 <your workstation's IP address>
route add 10.0.0.1 mask 255.0.0.0 <your workstation's IP address>
<enter>
<enter><enter>
<enter>
•For Linux / Unix, type:
route add 10.0.0.1 gw <your workstation's IP address> <enter>
route add 10.0.0.1 gw <your workstation's IP address> <enter>route add 10.0.0.1 gw <your workstation's IP address> <enter>
route add 10.0.0.1 gw <your workstation's IP address> <enter>
Then, from your command line, type:
telnet 10.0.0.1 <enter>
telnet 10.0.0.1 <enter>telnet 10.0.0.1 <enter>
telnet 10.0.0.1 <enter>
to access the SCS1620.
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