SENA

www.sena.comwww.sena.com

SENA

Dec, 2004

HelloDevice Super seriesSS100/110/400/800

One-Stop Solution in Device Networking

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Contents Overview Configuration Ways

Text-based Interface Web-based Interface

Features Operation Modes TCP/UDP Multiple Remote Hosts Security PC Card Support Data Logging Event Handling SNMP Dynamic Domain Name Customization Support

Case Studies Door Access Application (Customized) Medical Application (Customized) Bridge Monitoring System

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Overview (1)• Linux-based Open platform (kernel 2.4.2)• Supports 1/4/8 serial port (RS232/422/485)• 1 PCMCIA slot

– ATA flash memory, LAN/WLAN, PSTN/CDMA Modem• Flexible host mode mode

– TCP/UDP single/multi-session support– Primary/Secondary host support

• Powerful Security– Industry-standard encryption support

• SSL v3, and TLS v1– Encryption algorithm support

• 3DES, and RC4• Flexible customization

– Linux CLI with development environment– Source file add/modify/compile/link in 1MB user space– Web customization

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Overview (2)

Remote Host Host (SS) Device

• LAN

• Wireless (802.11b)

• PSTN

• Mobile (CDMA)

• RS-232

• RS-422

• RS-485

Any device with serial interface

Connections


Configuration Ways

1. Text-based Interface2. Web-based Interface

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1. System Console2. Telnet (port 23) or3. SSH (port 22)

Text-based Interface

Privileges

• Admin user can access and edit configuration parameters.

• Root user can have full control on SS via CLI, in addition to access and configuration rights.

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Web-based interface using web browsers such as IE, Netscape and Opera

Web-based Interface


Features

1. Operation Modes2. TCP/UDP Multiple Remote Hosts3. Security4. PC Card Support5. Data Logging and Event Handling6. SNMP7. Dynamic Domain Name8. Customization Support

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Operation modesVarious operation modes

•TCP/UDP

device

Remote host

•modem emulation

modem

DTE

TCP/UDP socket

Remote host

TCP socket

DTEmodem

Remote host

TCP socket

•Dial-in/out mode


TCP/UDP Multicasting

1. Overview2. Configuration3. Connection4. Application Diagram5. Application Areas

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Overview• SS supports an enhancement transmission method "TCP/UDP

multicasting", which transmits serial device data to multiple hosts simultaneously.

• Max. 32 hosts (incoming+outgoing) per one port allowed.

• Max. 16 outgoing connections (registered remote hosts) per one port allowed

• Each registered TCP host can have a backup host

• UDP host mode does not support backup host since there is no way to check status of primary remote host.

• Multicasting feature is very useful in application areas where user needs to transmit a message to several display signboard devices simultaneously.

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Configuration• Access the SS web interface

– Choose Serial port --> Configuration --> Port # --> Remote host configuration

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Connection

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Application Diagram

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Application AreasApplications which require Multiple data transmission include:

• LED Signboard,• Electronic Metering,• Any customer requiring Multiple data transmission.


Security

1. SSL Encryption: Overview2. SSL Encryption: Configuration3. SSL Encryption: Connection4. Other Security Features5. Application Areas

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SSL Encryption: Overview

• SSL creates a secure connection between a client and a server, over which any amount of data can be sent securely.

• By setting the cryptography method as one of SSLv2, SSLv3, SSLv3 rollback to v2 or TLSv1, the Super Series can communicate with other device supporting SSL/TLS cryptography method in encrypted sessions.

• SSL configuration settings are available only when the host mode is set to TCP or Modem Emulation mode.

• SSL works by using a private key to encrypt data that's transferred over the SSL connection.

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SSL Encryption: Configuration• Access the SS web interface

– Choose Serial port --> Configuration --> Port # --> Host mode configuration

– Choose Serial port --> Configuration --> Port # --> Cryptography configuration

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SSL Encryption: Connection

• Run SSL or TLS client application– openssl s_client –connect 192.168.0.2:6001 –ssl3

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Other Security Features Serial data encryption

3DES, RC4

Static Key encryption

Secured Web interface

HTTPS

IP filtering

serial port based IP filtering

box based IP filtering

Secured file uploading

SCP

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Application AreasApplications which require more secure communications include:

• Financial,• Retail/POS,• Government,• Medical, and• Any customer requiring enhanced security to protect sensitive

information.


PC Card Support

1. Overview2. CF Memory card configuration3. Modem card configuration4. LAN card configuration5. WLAN card configuration

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Overview

• PC card types that can be added to the SS include a serial modem, compact-flash card, wireless LAN card, and a network LAN card.

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CF Memory card configuration• Access the SS web interface

– Choose PC Card --> Configuration

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Modem card configuration• Access the SS web interface


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LAN card configuration• Access the SS web interface


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WLAN card configuration• Access the SS web interface



Data Logging and Event Handling

1. Overview2. Data Logging Configuration3. Data Event Handling Configuration4. Data Event Handling Test

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Overview

• The SS can capture all system and port data, and save it into a log file. This buffer can be viewed from the web, saved to memory, or saved to a Flash Card, syslog server or NFS server.

• System logs track events such as logins, authentication failures, system configuration changes, and more.

• Port logs document the data flow through the SS serial ports.

• In addition, the SS can be configured for system alerts and notifications. It can send email messages when an alarm message is detected in the serial port data.

• The SS uses SMTP for sending email notifications and SNMP for trap alerts.

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Data Logging Configuration• Access the SS web interface

– Choose Serial port --> Configuration --> Port # --> Port logging

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Data Event Handling Configuration• Access the SS web interface

– Choose Serial port --> Configuration --> Port # --> Port logging

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Data Event Handling Test• Event Handling via SNMP browser and SMTP email


SNMP

1. Overview2. Configuration3. Connection

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Overview

• SS supports SNMP that provides status and performance of connected serial devices through their Ethernet connections.

• Applications such as NMS or an SNMP browser can exchange information with the SS.

• The SS supports SNMP authentication, Login, and Link up traps.

• The SS supports both versions 1 and 2 of the SNMP protocol and delivers the System and Port alerts as traps.

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Configuration• Access the SS web interface

– Choose Network --> SNMP configuration

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Connection• Authentication, Login, and Link up traps in Kiwi SNMP browser


Dynamic Domain Name

1. Overview2. Configuration and Connection

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Overview

• Dynamic DNS Protocol enables users to access the SS via a domain name for floating IP environments such as DSL line and DHCP.

• To use this service, users must set-up an account in Dynamic DNS Network Services and add domain name, user name and password on the SS DDNS configuration page.

• Whenever user reboots the SS in floating IP environments, it sends updated IP address to Dynamic DNS Network Services.

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Configuration and Connection• Access the SS web interface

– Choose Network --> Dynamic DNS configuration

• Access the SS web interface and use domain name• For e.g., ismdemo.dyndns.biz


Customization Support

1. Overview2. User Web Customization - HTML pages3. User Web Customization – CGI & Java pages4. Serial Filter Application

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Overview• Web customization options

– Plain HTML files– CGI written in C

• User application implementation– Filter applications in C– Other applications in C or shell scripts

• To quickly develop custom applications that run on the HelloDevice Super Series, SDK (Software Development Kit) is needed.

• SS SDK is a 256MB CF card composed of executable binaries (including gcc), header files, and library files.– Executable binaries run on SS (MPC855T Linux)– Header files and Library files are compatible with SS platform

• With SS SDK, users can compile their own C/C++ source code to run on SS without installing cross-compile utilities on their PC.

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• If you are using Windows, using SCP (secure copy protocol) client tools for Windows will be handy for file transfer from/to SS

• Winscp (GUI)– Download @ http://winscp.sourceforge.net/eng/– Install as other applications

• Pscp (command line interface)– Download pscp.exe @

http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html

– Copy pscp.exe into C:\Windows directory

Preparation

User Web Customization - HTML pages (1/3)

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• Prepare index.html file and other related files (e.g. index.html and webtest.swf)

• Just copy the files to SS, /usr2/usrweb directory using SCP tools (e.g. winscp) and it will work!

Running User HTML file


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Browsing SS User Web Pages

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[email protected]:~# editconf

------------------------------------------------------------------------------ Welcome to SS-110 configuration page … IP mode: DHCP IP address: 192.168.0.15------------------------------------------------------------------------------ Select menu: 1. Network configuration … <Enter> Refresh---> 3------------------------------------------------------------------------------ PC Card configuration------------------------------------------------------------------------------ Currently configured PC card: (none)

Select menu: 1. Change card configuration 2. Stop the card service to disable or remove card

3. Probe a new card <ESC> Back, <Enter> Refresh---> 3 Do you want to probe a new pc card? (y/n): y

A new PC card is discovered.

------------------------------------------------------------------------------ PC Card configuration------------------------------------------------------------------------------ Currently configured PC card: ATA/IDE fixed disk card Model: SanDisk SDP 5/3 0.6 Size: 257 MB File system: ext2 …--->------------------------------------------------------------------------------ Welcome to SS-110 configuration page …------------------------------------------------------------------------------ Select menu: 1. Network configuration … 6. Exit without saving

7. Exit and apply changes 8. Exit and reboot <Enter> Refresh---> 7Are you sure to save changes? (y/n): ySaving..Configuration is saved successfullyAre you sure to apply changes? (y/n): yApplying........Configuration is applied successfully

• After recognition, SDK is mounted on /mnt/flash/ directory

User Web Customization – CGI & Java pages (1/3)

Preparation: Recognizing SDK Card

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• Make working directory such as /mnt/flash/work

• Copy cgi source file (e.g. ex.c) into the working directory

• Compile *.c file with the option of “–L/mnt/flash/lib” (Library path)

• Copy *.cgi binary file to /usr2/cgi-bin/ directory

• Copy index.html that has CGI link in it to /usr2/usrweb/ directory


Compiling and Copying files

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[email protected]:/mnt/flash/work# cat ex.c#include <stdio.h>#include <stdlib.h>#include <string.h>

main(int argc, int *argv[]){ printf("Content-type: text/html\n\n"); printf("<html>"); printf("<body bgcolor=\"#0000C0\">"); printf("<b><font color=\"#FF0000\">This is a sample CGI page</font></b>\n"); printf("</body>"); printf("</html>\n"); fflush(stdout);}[email protected]:/mnt/flash/work# gcc -o ex.cgi ex.c -L/mnt/flash/[email protected]:/mnt/flash/work# cp ex.cgi /usr2/cgi-bin/[email protected]:/mnt/flash/work#


Sample CGI Source file and Output

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Serial Filter Application (1/4)

• Users just need to write filter application only to customize serial port application rather than writing whole source code

• Typical situation for serial application customization:– Add/remove protocol

header– Periodically check serial

device

SS Serial Filter Structure

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• Location = /mnt/flash/sample/filter

• periodic_filter.c– Periodic query of the serial device application might

start from here

• empty_filter.c– Do nothing. Adding/removing header application

might start from here

Sample file


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• Log into the SS (Telnet or SSH)

• Copy sample file from SDK to working directory (e.g. /mnt/flash/work)

• Compile source file (Be careful with compile options)gcc -o myfilter myfilter.c -L/mnt/flash/lib –lpthread

• Copy compiled binary to /usr2 directory

• Specify filter application and arguments using configuration web or menu configuration

How to


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[email protected]:/mnt/flash/work# cp /mnt/flash/sample/filter/periodic_filter.c ./[email protected]:/mnt/flash/work# gcc -o myfilter myfilter.c -L/mnt/flash/lib [email protected]:/mnt/flash/work# cp myfilter /[email protected]:/mnt/flash/work# editconf…------------------------------------------------------------------------------ Serial port configuration - Port #1 --> Filter application------------------------------------------------------------------------------ Select menu: 1. Filter application path name: /bin/ss.filter 2. Filter application arguments: <ESC> Back, <Enter> Refresh---> 1 Enter a filter application full path name(ex: /bin/filter)---> /usr2/myfilter------------------------------------------------------------------------------ … 1. Filter application path name: /usr2/myfilter 2. Filter application arguments: <ESC> Back, <Enter> Refresh---> 2 Enter filter application arguments---> 'You will see this msg every 1 sec' 1

Sample Filter and Output



Case Studies

1. Door Access Application (Customized)2. Medical Application (Customized)3. Bridge Monitoring System

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Door Access Application (Customized)

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Door Access Application (Customized)

• Target Device : RF-ID Card Reader

• Application Details:– Customer has added a user customized filtering

program that transmits only needed serial-based RF's to the management station through the SS110.

– As a result, the time that is required to process visitor’s door access requests has been dramatically minimized.

– Why SS instead of the PS?• Fast response required Local protocol parser

application is required on the SS to reduce the network traffic

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Bridge Monitoring System

SS110

System Architecture

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Bridge Monitoring System

• Target Device : Gage length deformation sensors on a Railway Bridge

• Application Details:– Long gage length deformation sensors (GPS) that are

installed throughout a railway bridge to gain actionable information from the bridge

– Why SS110? • Powerful logging capability (Syslog server)• Wireless LAN thru PCMCIA slot

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Medical Application

• Target Device: Medical Monitoring Device

• Application Details:– Serial based medical devices are connected to

Ethernet using the SS400/800– Medical devices are reset remotely by sending

“serial-break” signal thru the SS– “Serial-break” feature is implemented using the SS

customization feature

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Contact SENA

SENA Technologies, Inc.

[email protected]:+82-2-529-7025Fax: +82-2-573-7710Web Address: http://www.sena.com210 Yangjae-dong Seocho-guSeoul 137-130, South Korea

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