Sena STS Series User manual

1
Secure Terminal Server
STS Series
User Guide
Version 1.3.3
2005-11-08

2
Copyright Information
Copyright 1998-2005, Sena Technologies, Inc. All rights reserved.
Sena Technologies reserves the right to make any changes and improvements to its product without
providing prior notice.
Trademark Information
HelloDevice™is a trademark of Sena Technologies, Inc.
Windows® is a registered trademark of Microsoft Corporation.
Ethernet® is aregistered trademark of XEROX Corporation.
Notice to Users
Proper back-up systems and necessary safety devices should be utilized to protect against injury,
death or property damage due to system failure. Such protection is the responsibility of the user.
This device is not approved for use as a life-support or medical system.
Any changes or modifications made to this device without the explicit approval or consent of Sena
Technologies will void Sena Technologies of any liability or responsibility of injury or loss caused by
any malfunction.
Technical Support
Sena Technologies, Inc.
210 Yangjae-dong, Seocho-gu
Seoul 137-130, Korea
Tel: [phone]
Fax: [phone]
E-Mail: [e-mail]
Website: http://www.sena.com

3
Revision history
Revision Date Name Description
V1.0.2 2003-12-3 O.J. Jung Initial Release
V1.1.0 2004-01-12 O.J. Jung Revision with release of version 1.1.0
V1.1.1 2004-01-30 O.J. Jung Typographical errors are fixed
V1.2.0 2004-06-11 O.J. Jung Revision with release of version 1.2.0
V1.3.0 2004-10-11 O.J. Jung Revision with release of version 1.3.0
V1.3.1 2004-10-15 O.J. Jung Added Appendix 6
V1.3.2 2005-05-18 O.J. Jung Appendix 7 is added, PC Card List is updated,
The description about DSR behavior is corrected.
Typographical errors are fixed.
V1.3.3 2005-11-08 Hunn Lee Temperature and Humidity update

4
Contents
1. Introduction 7
1.1. Overview...................................................................................................................................7
1.2. Package Check List...................................................................................................................8
1.3. Product Specification.................................................................................................................9
1.4. Terminologies and acronyms...................................................................................................10
2. Getting Started 12
2.1. Panel Layout...........................................................................................................................12
2.1.1. STS800 Panel Layout.....................................................................................................12
2.1.2. STS1600 Panel Layout...................................................................................................13
2.2. Connecting the Hardware........................................................................................................13
2.2.1. Connecting the power.....................................................................................................13
2.2.2. Connecting to the network..............................................................................................14
2.2.3. Connecting to the device ................................................................................................15
2.2.4. Accessing the System Console.......................................................................................15
2.2.5. Using the System console ..............................................................................................16
2.2.6. Using Remote console....................................................................................................17
2.3. Accessing the Web Browser Management Interface ...............................................................18
3. Network Configuration 21
3.1. IP Configuration.......................................................................................................................21
3.1.1. Using a Static IPAddress................................................................................................22
3.1.2. Using DHCP ...................................................................................................................23
3.1.3. Using PPPoE..................................................................................................................24
3.2. SNMP Configurations..............................................................................................................25
3.2.1. MIB-II System objects Configuration...............................................................................26
3.2.2. Access Control Configuration..........................................................................................27
3.2.3. Trap Receiver Configuration ...........................................................................................27
3.2.4. Management using SNMP..............................................................................................27
3.3. Dynamic DNS Configuration....................................................................................................28
3.4. SMTP Configuration................................................................................................................29
3.5. IP Filtering...............................................................................................................................30
3.6. SYSLOG server configuration.................................................................................................32
3.7. NFS server configuration.........................................................................................................32
3.8. Ethernet configuration.............................................................................................................33
3.9. Web server configuration.........................................................................................................34
3.10. TCP service configuration......................................................................................................34
4. Serial Port Configuration 36

5
4.1. Overview.................................................................................................................................36
4.2. Individual Port Configuration ...................................................................................................39
4.2.1. Port Enable/Disable........................................................................................................40
4.2.2. Port Title .........................................................................................................................40
4.2.3. Apply All Port Settings.....................................................................................................40
4.2.4. Host Mode Configuration ................................................................................................41
4.2.5. Remote host configuration..............................................................................................49
4.2.6. Port IP filtering configuration...........................................................................................50
4.2.7. Cryptography configuration.............................................................................................51
4.2.8. Serial port parameters ....................................................................................................56
4.2.9. Modem configuration ......................................................................................................59
4.2.10. Port Logging .................................................................................................................60
4.2.11. Port event handling configurations................................................................................62
4.3. All Port Configurations.............................................................................................................66
5. PC Card Configuration 68
5.1. LAN Card Configuration ..........................................................................................................69
5.2. Wireless LAN Card Configuration............................................................................................70
5.3. Serial Modem Card Configuration ...........................................................................................72
5.4.ATA/IDE Fixed Disk Card Configuration...................................................................................72
6. System Administration 74
6.1. System Status .........................................................................................................................74
6.2. System Logging.......................................................................................................................74
6.3. User Logged on List................................................................................................................76
6.4. Change Password...................................................................................................................77
6.5. Device Name Configuration.....................................................................................................77
6.6. Date and Time Settings...........................................................................................................77
6.7. Configuration management.....................................................................................................78
6.8. Firmware Upgrade...................................................................................................................80
6.9. User File Uploading.................................................................................................................83
7. System Statistics 85
7.1. Network Interfaces Statistics ...................................................................................................85
7.2. Serial Ports Statistics...............................................................................................................85
7.3. IP Statistics..............................................................................................................................86
7.4. ICMP Statistics........................................................................................................................88
7.5. TCP Statistics..........................................................................................................................90
7.6. UDP Statistics..........................................................................................................................92
8. CLI guide 93
8.1. Introduction .............................................................................................................................93

6
8.2. Flash partition..........................................................................................................................93
8.3. Supported Linux Utilities..........................................................................................................94
8.3.1. Shell & shell utilities:.......................................................................................................94
8.3.2. File and disk utils:...........................................................................................................94
8.3.3. System utilities:...............................................................................................................94
8.3.4. Network utilities:..............................................................................................................94
8.4.Accessing CLI as root or system administrator........................................................................94
8.5. Examples ................................................................................................................................94
8.5.1. Disabling the Telnet Port of the Unit................................................................................94
8.5.2. Periodical program execution..........................................................................................96
Appendix 1. Connections 97
A 1.1. Ethernet Pin outs..................................................................................................................97
A 1.2. Console and Serial port pin-outs..........................................................................................97
A 1.3. Ethernet Wiring Diagram......................................................................................................98
A 1.4. RS232 Serial Wiring Diagram ..............................................................................................98
Appendix 2. PC card supported by STS 100
Appendix 3. STS Configuration files 102
A 3.1. System.cnf .........................................................................................................................102
A 3.2. Redirect.cnf........................................................................................................................104
Appendix 4. Well-known port numbers 108
Appendix 5. Guide to the Bootloader menu program 109
A 5.1. Overview............................................................................................................................109
A 5.2. Main menu .........................................................................................................................109
A 5.3. RTC configuration menu ....................................................................................................109
A 5.4. Hardware test menu...........................................................................................................110
A 5.5. Firmware upgrade menu....................................................................................................114
Appendix 6. Using STS Series with Serial/IP 116
A 6.1. STS Series vs. Serial/IP options.........................................................................................116
A 6.2. Connection example - Telnet and SSLv3 encryption..........................................................117
Appendix 7. How to make a certificate for SSL encryption 121
A 7.1. Install the OpenSSL package.............................................................................................121
A 7.2. Make root CA (for Self-signed)...........................................................................................121
A 7.3. Making a certificate request ...............................................................................................123
A 7.4. Signing a certificate request...............................................................................................123
A 7.5. Making certificate for STS..................................................................................................124

7
1. Introduction
1.1. Overview
The STS Series is a secure terminal server (or device server) that makes your legacy serial devices
manageable by industry-standard Ethernet network. Based on open network protocols such as TCP/IP
and UDP, it gives you ultimate flexibility to your serial devices. With PPPoE (PPP-over-Ethernet)
connection feature of the STS Series, the RS232 serial devices could be managed over DSL-based
broadband network.
With the rich broadband network connectivity protocols such as DHCP, PPPoE and Dynamic
DNS, you could easily manage the legacy serial devices over broadband Internet by using DSL or
cable modem connection. The built-in Dynamic DNS protocol of the STS Series enables you to access
the serial devices with their domain names.
The STS Series also provides you with full-featured system management functionality of system
status display, firmware upgrade, remote reset and system log display by using various ways such as
telnet, serial console port or web.
You could easily configure and administrate the STS Series, with the full-featured management
functions of status monitor, remote reset, error log monitor and firmware upgrade by using Telnet and
serial console port under the password protection support.
For critical applications of secure data communication, the STS Series supports SSLv2, SSLv3
and TLSv1 for data encryption. In addition, IP address filtering function is provided for protecting
unintentional data streams to be transmitted to the STS Series.
Typical application areas of the STS Series are:
- Industrial automation
- Network management
- Retail/Point of sale
- Remote metering
- Remote display
- Building automation
- Security/Access control systems
- General data acquisition application
- Medical application
The STS Series gives you ideal remote management capability of control, monitoring, diagnosis and
data gathering over RS232 serial devices.
Please note that this manual assumes user knowledge of Internetworking protocols and
serial communications.

8
1.2. Package Check List
- STS Series external box
- External 110V or 230V power supply or power cord
- CAT5 cable
- Console cable kit
- Quick Start Guide
- CD-ROM, including the Serial/IP Com Port Redirector, HelloDevice-IDE, HelloDevice Manager
and manuals

9
1.3. Product Specification
STS800 STS1600
8-port 16-port
Serial speeds 75bps to 230Kbps
Flow Control:
Hardware RTS/CTS, Software Xon/Xoff
RJ45 connector
Signals:
RS232 Rx, Tx, RTS, CTS, DTR, DSR, DCD, GND
Serial Interface
Modem controls: DTR/DSR and RTS/CTS
10/100 Base-Tx Ethernet with RJ45 Ethernet connector
Network Interface Supports static and dynamic IP address
Protocols - ARP, IP/ICMP, TCP, UDP, Telnet, SSH v1 & v2,
- SSL v2 & v3, TLS v1
- DNS, Dynamic DNS, HTTP, HTTPS,
- SMTP with/without Authentication, pop-before SMTP,
- DHCP client, NTP, PPPoE, SNMP v1 & v2
PCMCIA Supports one of the following PC cards:
ATA flash memory card
802.11b Wireless LAN card
10/100 Base-TX LAN Card
Modem card
User ID & Password
HTTPS
Secure terminal interface: SSH
Data Encryption: SSLv2/v3, TLS v1, 3DES and RC4
IP address filtering
Security
SCP
Modem emulation Full support for AT commands
Web, Telnet or Serial console port or HelloDevice Manager
O/S support: Windows 98/ME/NT/2000/XP
System log
Automatic email delivery of error log
System statistics
Full-featured system status display
Management
Firmware
Stored in Flash memory and upgradeable via serial console, telnet or web
Diagnostic LED Power
Ready
10/100 Base Link, Act
Serial InUse/Rx/ Tx for each port
PC Card
Environmental Operating temperature: 0’C to 50’C
Storage temperature: –20’C to 66’C
Humidity: 90% Non-condensing
Power 5VDC, 1.5A @ 5VDC 110 ~ 240VAC
245 x 153 x 30 (mm) 432 x 193 x 44.5Dimension
L x W x H (mm) DIN-rail mount option 19 in. rack mountable
Weight (kg) 1.5 2.8
Certification FCC(A), CE(A), MIC

10
Warranty 5-year limited warranty
1.4. Terminologies and acronyms
This section will define commonly used terms in this manual. These terms are related to
Internetworking, and defined in regards to their use with STS Series.
 MAC address
On a local area network or other network, the MAC (Media Access Control) address is the computer's
unique hardware number. (On an Ethernet LAN,it is the same as the Ethernet address.)
It is a unique 12-digit hardware number, which is composed of 6-digit OUI (Organization Unique
Identifier) number and 6-digit hardware identifier number. The STS Series has the following MAC
address template: 00-01-95-xx-xx-xx. The MAC address can be found on the bottom of the original
package.
 Host
A user’s computer connected to the network
Internet protocol specifications define "host" as any computer that has full two-way access to
other computers on the Internet. A host will have a specific "local” or “host number" that, together with
the network number, forms its unique IP address.
 Session
A series of interactions between two communication end points that occur during the span of a single
connection
Typically, one end point requests a connection with another specified end point. If that end point
replies, agreeing to the connection, the end points take turns exchanging commands and data ("talking
to each other"). The session begins when the connection is established at both ends and terminates
when the connection is ended.
 Client/Server
Client/server describes the relationship between two computer programs in which one program, the
client, makes a service request from another program, the server, which fulfills the request.
A server is a computer program that provides services to other computer programs on one or
many computers. The client is the requesting program or user in a client/server relationship. For
example, the user of a Web browser is effectively making client requests for pages from servers all
over the Web. The browser itself is a client in its relationship with the computer that is getting and
returning the requested HTML file. The computer handling the request and sending back the HTML file
is a server.