Transcript SENA One-Stop Solution in Device Networking HelloDevice Super series SS100/110/400/800 www.sena.com Dec, 2004 Contents     Overview Configuration Ways  Text-based Interface  Web-based Interface Features  Operation Modes  TCP/UDP Multiple Remote Hosts 

SENA
One-Stop Solution in Device Networking
HelloDevice Super series
SS100/110/400/800
www.sena.com
Dec, 2004
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
www.sena.com
2
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
www.sena.com
3
4
Overview (2)
Connections
Remote Host
Device
Host (SS)
• LAN
• RS-232
• Wireless (802.11b)
• RS-422
• PSTN
• RS-485
• Mobile (CDMA)
www.sena.com
Any device with
serial interface
Configuration Ways
1. Text-based Interface
2. Web-based Interface
www.sena.com
Text-based Interface
1.
2.
3.
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.
www.sena.com
6
Web-based Interface
Web-based interface using web browsers such as IE, Netscape and Opera
www.sena.com
7
Features
1.
2.
3.
4.
5.
6.
7.
8.
www.sena.com
Operation Modes
TCP/UDP Multiple Remote Hosts
Security
PC Card Support
Data Logging and Event Handling
SNMP
Dynamic Domain Name
Customization Support
9
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
TCP socket
modem
modem
www.sena.com
DTE
TCP/UDP Multicasting
1.
2.
3.
4.
5.
www.sena.com
Overview
Configuration
Connection
Application Diagram
Application Areas
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.
www.sena.com
11
Configuration
• Access the SS web interface
– Choose Serial port --> Configuration --> Port # --> Remote host
configuration
www.sena.com
12
Connection
www.sena.com
13
Application Diagram
www.sena.com
14
Application Areas
Applications which require Multiple data transmission include:
• LED Signboard,
• Electronic Metering,
• Any customer requiring Multiple data transmission.
www.sena.com
15
Security
1.
2.
3.
4.
5.
www.sena.com
SSL Encryption: Overview
SSL Encryption: Configuration
SSL Encryption: Connection
Other Security Features
Application Areas
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.
www.sena.com
17
SSL Encryption: Configuration
• Access the SS web interface
– Choose Serial port --> Configuration --> Port # --> Host mode
configuration
– Choose Serial port --> Configuration --> Port # --> Cryptography
configuration
www.sena.com
18
SSL Encryption: Connection
• Run SSL or TLS client application
– openssl s_client –connect 192.168.0.2:6001 –ssl3
www.sena.com
19
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
www.sena.com
20
Application Areas
Applications which require more secure communications include:
•
•
•
•
•
Financial,
Retail/POS,
Government,
Medical, and
Any customer requiring enhanced security to protect sensitive
information.
www.sena.com
21
PC Card Support
1.
2.
3.
4.
5.
www.sena.com
Overview
CF Memory card configuration
Modem card configuration
LAN card configuration
WLAN card configuration
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.
www.sena.com
23
CF Memory card configuration
• Access the SS web interface
– Choose PC Card --> Configuration
www.sena.com
24
Modem card configuration
• Access the SS web interface
– Choose PC Card --> Configuration
www.sena.com
25
LAN card configuration
• Access the SS web interface
– Choose PC Card --> Configuration
www.sena.com
26
WLAN card configuration
• Access the SS web interface
– Choose PC Card --> Configuration
www.sena.com
27
Data Logging and Event Handling
1.
2.
3.
4.
www.sena.com
Overview
Data Logging Configuration
Data Event Handling Configuration
Data Event Handling Test
Overview
29
• 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.
www.sena.com
Data Logging Configuration
• Access the SS web interface
– Choose Serial port --> Configuration --> Port # --> Port logging
www.sena.com
30
Data Event Handling Configuration
• Access the SS web interface
– Choose Serial port --> Configuration --> Port # --> Port logging
www.sena.com
31
Data Event Handling Test
• Event Handling via SNMP browser and SMTP email
www.sena.com
32
SNMP
1. Overview
2. Configuration
3. Connection
www.sena.com
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.
www.sena.com
34
Configuration
• Access the SS web interface
– Choose Network --> SNMP configuration
www.sena.com
35
Connection
• Authentication, Login, and Link up traps in Kiwi SNMP browser
www.sena.com
36
Dynamic Domain Name
1. Overview
2. Configuration and Connection
www.sena.com
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.
www.sena.com
38
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
www.sena.com
39
Customization Support
1.
2.
3.
4.
Overview
User Web Customization - HTML pages
User Web Customization – CGI & Java pages
Serial Filter Application
www.sena.com
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.
www.sena.com
41
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 @ http://winscp.sourceforge.net/eng/
– Install as other applications
• Pscp (command line interface)
– Download pscp.exe @
http://www.chiark.greenend.org.uk/~sgtatham/putt
y/download.html
– Copy pscp.exe into C:\Windows directory
www.sena.com
42
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!
www.sena.com
43
User Web Customization - HTML pages (3/3)
Browsing SS User Web Pages
www.sena.com
44
User Web Customization – CGI & Java pages (1/3)
Preparation: Recognizing SDK Card
• After recognition, SDK is mounted on /mnt/flash/ directory
[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.
www.sena.com
-----------------------------------------------------------------------------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
---> 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
45
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
www.sena.com
46
User Web Customization – CGI & Java pages (3/3)
Sample CGI Source file and Output
[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/lib
[email protected]:/mnt/flash/work# cp ex.cgi /usr2/cgi-bin/
[email protected]:/mnt/flash/work#
www.sena.com
47
48
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
www.sena.com
49
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
www.sena.com
50
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
www.sena.com
51
Serial Filter Application (4/4)
Sample Filter and Output
[email protected]:/mnt/flash/work# cp /mnt/flash/sample/filter/periodic_filter.c ./myfilter.c
[email protected]:/mnt/flash/work# gcc -o myfilter myfilter.c -L/mnt/flash/lib -lpthread
[email protected]:/mnt/flash/work# cp myfilter /usr2
[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
www.sena.com
Case Studies
1. Door Access Application (Customized)
2. Medical Application (Customized)
3. Bridge Monitoring System
www.sena.com
Door Access Application (Customized)
www.sena.com
53
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
www.sena.com
54
Bridge Monitoring System
System Architecture
SS110
www.sena.com
55
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
www.sena.com
56
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
www.sena.com
57
Contact SENA
SENA Technologies, Inc.
[email protected]
Phone:+82-2-529-7025
Fax: +82-2-573-7710
Web Address: http://www.sena.com
210 Yangjae-dong Seocho-gu
Seoul 137-130, South Korea
www.sena.com
58