SENA

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SENA

• One-Stop Solution in Device Networking

HelloDevice Super series SS100/110/400/800
Dec, 2004
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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)
Connections
Device
Remote Host
Host (SS)
Any device with serial interface

• RS-232
• RS-422
• RS-485

• LAN
• Wireless (802.11b)
• PSTN
• Mobile (CDMA)

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Configuration Ways

• Text-based Interface
• Web-based Interface

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Text-based Interface

• System Console
• Telnet (port 23) or
• SSH (port 22)

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

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

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Operation modes

• Various operation modes

Remote host

• TCP/UDP

device
TCP/UDP socket

• modem emulation

Remote host
DTE
TCP socket

• Dial-in/out mode

Remote host
modem
TCP socket
DTE
modem
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TCP/UDP Multicasting

• Overview
• Configuration
• Connection
• Application Diagram
• 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 (incomingoutgoing) 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 --gt Configuration --gt Port
  --gt Remote host configuration

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Connection
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Application Diagram
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Application Areas

• Applications which require Multiple data
  transmission include

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

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Security

• SSL Encryption Overview
• SSL Encryption Configuration
• SSL Encryption Connection
• Other Security Features
• 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 --gt Configuration --gt Port
  --gt Host mode configuration
• Choose Serial port --gt Configuration --gt Port
  --gt Cryptography configuration

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SSL Encryption Connection

• Run SSL or TLS client application
• openssl s_client connect 192.168.0.26001 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 Areas

• Applications which require more secure
  communications include

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

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PC Card Support

• Overview
• CF Memory card configuration
• Modem card configuration
• LAN card configuration
• 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 --gt Configuration

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Modem card configuration

• Access the SS web interface
• Choose PC Card --gt Configuration

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LAN card configuration

• Access the SS web interface
• Choose PC Card --gt Configuration

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WLAN card configuration

• Access the SS web interface
• Choose PC Card --gt Configuration

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Data Logging and Event Handling

• Overview
• Data Logging Configuration
• Data Event Handling Configuration
• 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 --gt Configuration --gt Port
  --gt Port logging

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Data Event Handling Configuration

• Access the SS web interface
• Choose Serial port --gt Configuration --gt Port
  --gt Port logging

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Data Event Handling Test

• Event Handling via SNMP browser and SMTP email

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SNMP

• Overview
• Configuration
• 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 --gt SNMP configuration

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Connection

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

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Dynamic Domain Name

• Overview
• 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 --gt Dynamic DNS configuration

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

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Customization Support

• Overview
• User Web Customization - HTML pages
• User Web Customization CGI Java pages
• 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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User Web Customization - HTML pages (1/3)
Preparation

• 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 _at_ http//winscp.sourceforge.net/eng/
• Install as other applications
• Pscp (command line interface)
• Download pscp.exe _at_ http//www.chiark.greenend.org
  .uk/sgtatham/putty/download.html
• Copy pscp.exe into C\Windows directory

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User Web Customization - HTML pages (2/3)
Running User HTML file

• 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!

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User Web Customization - HTML pages (3/3)
Browsing SS User Web Pages
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User Web Customization CGI Java pages (1/3)
Preparation Recognizing SDK Card

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

root_at_192.168.0.15 editconf -------------------
--------------------------------------------------
--------- Welcome to SS-110 configuration page
IP mode DHCP IP
address 192.168.0.15 ---------------------------
--------------------------------------------------
- Select menu 1. Network configuration
ltEntergt Refresh ---gt 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 ltESCgt Back, ltEntergt
Refresh ---gt 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 ---gt ------------------------
--------------------------------------------------
---- Welcome to SS-110 configuration page
------------------------------------------------
------------------------------ Select menu 1.
Network configuration 6. Exit without
saving 7. Exit and apply changes 8. Exit and
reboot ltEntergt Refresh ---gt 7 Are you sure to
save changes? (y/n) y Saving.. Configuration is
saved successfully Are you sure to apply changes?
(y/n) y Applying........ Configuration is
applied successfully
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User Web Customization CGI Java pages (2/3)
Compiling and Copying files

• 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

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User Web Customization CGI Java pages (3/3)
Sample CGI Source file and Output
root_at_192.168.0.15/mnt/flash/work cat
ex.c include ltstdio.hgt include
ltstdlib.hgt include ltstring.hgt main(int argc,
int argv) printf("Content-type
text/html\n\n") printf("lthtmlgt")
printf("ltbody bgcolor\"0000C0\"gt")
printf("ltbgtltfont color\"FF0000\"gtThis is a
sample CGI pagelt/fontgtlt/bgt\ n")
printf("lt/bodygt") printf("lt/htmlgt\n")
fflush(stdout) root_at_192.168.0.15/mnt/fla
sh/work gcc -o ex.cgi ex.c -L/mnt/flash/lib root_at_
192.168.0.15/mnt/flash/work cp ex.cgi
/usr2/cgi-bin/ root_at_192.168.0.15/mnt/flash/work
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Serial Filter Application (1/4)
SS Serial Filter Structure

• 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

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Serial Filter Application (2/4)
Sample file

• 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

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Serial Filter Application (3/4)
How to

• 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

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Serial Filter Application (4/4)
Sample Filter and Output
root_at_192.168.0.15/mnt/flash/work cp
/mnt/flash/sample/filter/periodic_filter.c
./myfilter.c root_at_192.168.0.15/mnt/flash/work
gcc -o myfilter myfilter.c -L/mnt/flash/lib
-lpthread root_at_192.168.0.15/mnt/flash/work cp
myfilter /usr2 root_at_192.168.0.15/mnt/flash/work
editconf ---------------------------------------
--------------------------------------- Serial
port configuration - Port 1 --gt Filter
application --------------------------------------
---------------------------------------- Select
menu 1. Filter application path name
/bin/ss.filter 2. Filter application
arguments ltESCgt Back, ltEntergt Refresh ---gt 1
Enter a filter application full path name(ex
/bin/filter) ---gt /usr2/myfilter ----------------
--------------------------------------------------
------------ 1. Filter application path
name /usr2/myfilter 2. Filter application
arguments ltESCgt Back, ltEntergt Refresh ---gt 2
Enter filter application arguments ---gt 'You will
see this msg every 1 sec' 1
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Case Studies

• Door Access Application (Customized)
• Medical Application (Customized)
• 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
  visitors 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
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.
• info_at_sena.com
• Phone[phone]
• Fax [phone]
• Web Address http//www.sena.com
• 210 Yangjae-dong Seocho-gu
• Seoul 137-130, South Korea