Moxa Technologies EtherDevice EDR-G903 User manual

EDR-G903/G902 User’s Manual
Second Edition, January 2011
www.moxa.com/product
© 2011 Moxa Inc. All rights reserved.
Reproduction without permission is prohibited.

EDR-G903/G902 User’s Manual
The software described in this manual is furnished under a license agreement and may be used only in accordance with
the terms of that agreement.
Copyright Notice
Copyright ©2011 Moxa Inc.
All rights reserved.
Reproduction without permission is prohibited.
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The MOXA logo is a registered trademark of Moxa Inc.
All other trademarks or registered marks in this manual belong to their respective manufacturers.
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Information in this document is subject to change without notice and does not represent a commitment on the part of
Moxa.
Moxa provides this document as is, without warranty of any kind, either expressed or implied, including, but not limited
to, its particular purpose. Moxa reserves the right to make improvements and/or changes to this manual, or to the
products and/or the programs described in this manual, at any time.
Information provided in this manual is intended to be accurate and reliable. However, Moxa assumes no responsibility for
its use, or for any infringements on the rights of third parties that may result from its use.
This product might include unintentional technical or typographical errors. Changes are periodically made to the
information herein to correct such errors, and these changes are incorporated into new editions of the publication.
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Table of Contents
1. Introduction...................................................................................................................................... 1-1
Overview...........................................................................................................................................1-2
Package Checklist...............................................................................................................................1-2
Features............................................................................................................................................1-2
Industrial Networking Capability....................................................................................................1-2
Designed for Industrial Applications...............................................................................................1-2
Useful Utility and Remote Configuration .........................................................................................1-2
2. Getting Started.................................................................................................................................. 2-1
RS-232 Console Configuration (115200, None, 8, 1, VT100) ....................................................................2-2
Using Telnet to Access the EtherDevice Router’s Console.........................................................................2-4
Using a Web Browser to Configure the EtherDevice Router.......................................................................2-5
3. Features and Functions..................................................................................................................... 3-1
Configuring Basic Settings ...................................................................................................................3-3
System Identification...................................................................................................................3-3
Accessible IP...............................................................................................................................3-4
Password....................................................................................................................................3-5
Time..........................................................................................................................................3-6
SettingCheck ..............................................................................................................................3-8
System File Update—by Remote TFTP..........................................................................................3-10
System File Update—by Local Import/Export ................................................................................ 3-10
Restart.....................................................................................................................................3-11
Reset to Factory Default.............................................................................................................3-11
Network Settings.............................................................................................................................. 3-12
Mode Configuration ................................................................................................................... 3-12
WAN1 Configuration ..................................................................................................................3-13
WAN2 Configuration (includes DMZ Enable)..................................................................................3-15
Using DMZ Mode .......................................................................................................................3-19
LAN Interface............................................................................................................................3-19
DHCP Server............................................................................................................................. 3-20
Static DHCP List........................................................................................................................3-21
DHCP Leased List ......................................................................................................................3-22
Dynamic DNS ...........................................................................................................................3-22
Network Redundancy ........................................................................................................................3-23
WAN Backup (EDR-G903 only)....................................................................................................3-23
Virtual Router Redundancy Protocol (VRRP)..................................................................................3-25
Static Routing and Dynamic Routing ...................................................................................................3-26
Static Routing...........................................................................................................................3-26
RIP (Routing Information Protocol)..............................................................................................3-27
Routing Table ...........................................................................................................................3-28
Network Address Translation (NAT).....................................................................................................3-28
NAT Concept.............................................................................................................................3-28
N-to-1 NAT............................................................................................................................... 3-28
Port Forwarding ........................................................................................................................3-29
1-to-1 NAT ...............................................................................................................................3-31
Firewall Settings...............................................................................................................................3-33
Firewall Policy Concept............................................................................................................... 3-33
Firewall Policy Overview.............................................................................................................3-33
Firewall Policy Configuration .......................................................................................................3-34
Layer 2 Policy Setup .................................................................................................................. 3-35
Quick Automation Profile ............................................................................................................3-37
PolicyCheck ..............................................................................................................................3-38
Denial of Service (DoS) function..................................................................................................3-40
VPN (Virtual Private Network) ............................................................................................................3-41
Overview.................................................................................................................................. 3-41
IPSec Configuration...................................................................................................................3-42
X.509 Certification.....................................................................................................................3-47
L2TP (Layer 2 Tunnel Protocol) ...................................................................................................3-49
Examples for Typical VPN Applications .........................................................................................3-51
Traffic Prioritization...........................................................................................................................3-52
How Traffic Prioritization Works...................................................................................................3-53
Traffic Prioritization Configuration................................................................................................3-53
Configuring SNMP.............................................................................................................................3-56
Using Auto Warning ..........................................................................................................................3-58
Using Diagnosis................................................................................................................................3-62
Using Monitor...................................................................................................................................3-63
Using System Log.............................................................................................................................3-64
Using HTTPs/SSL..............................................................................................................................3-65

A. MIB Groups ....................................................................................................................................... A-1

1
1. Introduction
Welcome to the Moxa EtherDevice Router (EDR-G903/G902), the Gigabit Firewall/VPN secure routers designed
for connecting Ethernet-enabled devices in industrial field applications.
The following topics are covered in this chapter:

Overview

Package Checklist

Features
Industrial Networking Capability
Designed for Industrial Applications
Useful Utility and Remote Configuration

EDR-G903/G902 Introduction
1-2
Overview
As the world’s network and information technology becomes more mature, the trend is to use Ethernet as the
major communications interface in many industrial communications and automation applications. In fact, a
whole new industry has sprung up to provide Ethernet products that comply with the requirements of
demanding industrial applications.
The EtherDevice Router series is a Gigabit speed, all-in-one Firewall/VPN/Router for Ethernet security
applications in sensitive remote control and monitoring networks. The EtherDevice Router supports one WAN,
one LAN, and a user-configurable WAN/DMZ interface (EDR-G903) that provides high flexibility for different
applications, such as WAN redundancy or Data/FTP server security protection.
The Quick Automation Profile function of the EtherDevice Router’s firewall supports most common Fieldbus
protocols, including EtherCAT, EtherNet/IP, FOUNDATION Fieldbus, Modbus/TCP, and PROFINET. Users can
easily create a secure Ethernet Fieldbus network from a user-friendly web UI with a single click. In addition,
wide temperature models are available that operate reliably in hazardous, -40 to 75°C environments.
Package Checklist
The EtherDevice Router is shipped with the following items. If any of these items are missing or damaged,
please contact your customer service representative for assistance.
•1 Moxa EtherDevice Router
•RJ45 to DB9 console port cable
•Protective caps for unused ports
•DIN-Rail mounting kit (attached to the EtherDevice Router’s rear panel by default)
•Hardware Installation Guide (printed)
•CD-ROM with User’s Manual and Windows Utility
•Moxa Product Warranty statement
Features
Industrial Networking Capability
•Router/Firewall/VPN all in one
•1 WAN, 1 LAN, and 1 user-configurable WAN or DMZ interface
•Network address translation (N-to-1, 1-to-1, and port forwarding)
Designed for Industrial Applications
•Dual WAN redundancy function
•Firewall with Quick Automation Profile for Fieldbus protocols
•Intelligent PolicyCheck and SettingCheck tools
•-40 to 75°C operating temperature (T models)
•Long-haul transmission distance of 40 km or 80 km (with optional mini-GBIC)
•Redundant, dual 12 to 48 VDC power inputs
•IP30, rugged high-strength metal case
•DIN-Rail or panel mounting ability
Useful Utility and Remote Configuration
•Configurable using a Web browser and Telnet/Serial console
•Send ping commands to identify network segment integrity

2
2. Getting Started
This chapter explains how to access the EtherDevice Router for the first time. There are three ways to access
the switch: (1) serial console, (2) Telnet console, or (3) web browser. The serial console connection method,
which requires using a short serial cable to connect the EtherDevice Router to a PC’s COM port, can be used if
you do not know the EtherDevice Router’s IP address. The Telnet console and web browser connection methods
can be used to access the EtherDevice Router over an Ethernet LAN, or over the Internet. A web browser can
be used to perform all monitoring and administration functions, but the serial console and Telnet console only
provide basic functions.
The following topics are covered in this chapter:

RS-232 Console Configuration (115200, None, 8, 1, VT100)

Using Telnet to Access the EtherDevice Router’s Console

Using a Web Browser to Configure the EtherDevice Router

EDR-G903/G902 Getting Started
2-2
RS-232 Console Configuration (115200, None, 8,
1, VT100)
NOTE
Connection Caution!
We strongly suggest that you do NOT use more than one connection method at the same time. Following this
advice will allow you to maintain better control over the configuration of your
EtherDevice Router
NOTE
We recommend using Moxa PComm Terminal Emula
tor, which can be downloaded free of charge from Moxa’
s
website.
Before running PComm Terminal Emulator, use an RJ45 to DB9-F (or RJ45 to DB25-F) cable to connect the
EtherDevice Router’s RS-232 console port to your PC’s COM port (generally COM1 or COM2, depending on how
your system is set up).
After installing PComm Terminal Emulator, perform the following steps to access the RS-232 console utility.
1. From the Windows desktop, click Start Programs PCommLite1.3 Terminal Emulator.
2. Select Open in the Port Manager menu to open a new connection.
3. The Communication Parameter page of the Property window will appear. Select the appropriate COM
port for Console Connection, 115200 for Baud Rate, 8 for Data Bits, None for Parity, and 1 for Stop Bits

EDR-G903/G902 Getting Started
2-3
4. Click the Terminal tab, and select VT100 for Terminal Type. Click OK to continue.
5. Type 1to select ansi/VT100 terminal type, and then press Enter.
6. The Console login screen will appear. Use the keyboard to enter the login account (admin or user),
and then press Enter to jump to the Password field. Enter the console Password (this is the same as
the Web Browser password; leave the Password field blank if a console password has not been set), and
then press Enter.
7. Enter a question mark (?) to display the command list in the console.
The following table shows a list of commands that can be used when the EtherDevice Router is in console (serial
or Telnet) mode:
Login by Admin account:
Command Parameter/Example Description
disable Switch the Admin mode to User mode
exit/quit Exit this consol mode connection
lan lan ip address (A.B.C.D) netmask (A.B.C.D)
Example:
lan ip address 192.168.127.10 netmask
255.255.255.0
Set the IP address of LAN interface
list Print command list
no no password admin Set the admin password to null
no password user Set the user password to null
password password admin (password)
Example:
Password admin 1234
Set the admin password
password user (password)
Example:
Password user 1234
Set the user password
ping ping (IP address)
Example:
ping 192.168.127.10
Send echo message
reboot Reboot this device
reload default-config Reload default configuration and Reboot this
device
show show lan Show running system information

EDR-G903/G902 Getting Started
2-4
telnet telnet (IP address)
Example:
telnet 192.168.127.10
Open a telnet connection
telnet (IP address) (port number)
Example:
telnet 192.168.127.10 23
Open a telnet connection with port number
ssh ssh (IP address)
Example:
ssh 192.168.127.10
Open a ssh connection
Login by User account:
Command Parameter/Example Description
exit/quit
Exit this consol mode connection
list Print command list
ping ping (IP address)
Example:
ping 192.168.127.10
Ping remote device via IP
show show lan Show running system information
ssh ssh (IP address)
Example:
ssh 192.168.127.10
Open a ssh connection
telnet telnet (IP address)
Example:
telnet 192.168.127.10
Open a telnet connection
telnet (IP address) (port number)
Example:
telnet 192.168.127.10 23
Open a telnet connection with port number
Using Telnet to Access the EtherDevice Router’s
Console
You may use Telnet to access the EtherDevice Router’s console utility over a network. To access the EDR’s
functions over the network (by either Telnet or a web browser) from a PC host that is connected to the same
LAN as the EtherDevice Router, you need to make sure that the PC host and the EtherDevice Router are on the
same logical subnet. To do this, check your PC host’s IP address and subnet mask. By default, the EtherDevice
Router’s LAN IP address is 192.168.127.254 and the EtherDevice Router’s subnet mask is 255.255.255.0 (for
a Class C subnet). If you do not change these values, and your PC host’s subnet mask is 255.255.0.0, then its
IP address must have the form 192.168.xxx.xxx. On the other hand, if your PC host’s subnet mask is
255.255.255.0, then its IP address must have the form, 192.168.127.xxx.
NOTE
To use the
EtherDevice Router’
s management and monitoring functions from a PC host connected to the same
LAN as the
EtherDevice Router, you must make sure that the PC host and the EtherDevice Router are
connected to the same logical subnet.
NOTE
Before accessing the console utility via Telnet, first connect the
EtherDevice Router’
s RJ45 Ethernet LAN ports
to your Ethernet LAN, or
directly to your PC’s Ethernet card (NIC). You can use either a straight-
through or
cross-over Ethernet cable.
NOTE
The
EtherDevice Router’s default LAN IP address is 192.168.127.254.

EDR-G903/G902 Getting Started
2-5
Perform the following steps to access the console utility via Telnet.
1. Click Start ( Run, and then telnet to the EtherDevice Router’s IP address from the Windows Run window.
(You may also issue the telnet command from the MS-DOS prompt.).
2. Refer to instructions 6 and 7 in the RS-232 Console Configuration (115200, None, 8, 1, VT100) section
on page 2-3.
Using a Web Browser to Configure the
EtherDevice Router
The EtherDevice Router’s web browser interface provides a convenient way to modify the switch’s configuration
and access the built-in monitoring and network administration functions. The recommended web browser is
Microsoft Internet Explorer 6.0 with JVM (Java Virtual Machine) installed.
NOTE
To use the
EtherDevice Router’
s management and monitoring functions from a PC host connected to the same
LAN as the
EtherDevice Router, you must make sure that the PC host and the EtherDevice Router are
connected to the same logical subnet.
NOTE
Before accessing the
EtherDevice Router’s web browser, first connect the EtherDevice Router’
s RJ45 Ethernet
LAN ports to your
Ethernet LAN, or directly to your PC’s Ethernet card (NIC). You can use either a
straight
-through or cross-over Ethernet cable.
NOTE
The
EtherDevice Router’s default LAN IP address is 192.168.127.254.
Perform the following steps to access the EtherDevice Router’s web browser interface.
1. Start Internet Explorer and type the EtherDevice Router’s LAN IP address in the Address field. Press
Enter to establish the connection.
2. The web login page will open. Select the login account (Admin or User) and enter the Password (this
is the same as the Console password), and then click Login to continue. Leave the Password field blank
if a password has not been set.

EDR-G903/G902 Getting Started
2-6
NOTE
By default, t
he EtherDevice Router’s password is not set (i.e., is blank).
You may need to wait a few moments for the web page to be downloaded to your computer. Use the menu tree
on the left side of the window to open the function pages to access each of the router’s functions.

3
3. Features and Functions
In this chapter, we explain how to access the EtherDevice Router’s configuration options, perform monitoring,
and use administration functions. There are three ways to access these functions: (1) RS-232 console, (2)
Telnet console, and (3) web browser.
The web browser is the most user-friendly way to configure the EtherDevice Router, since you can both monitor
the EtherDevice Router and use administration functions from the web browser. An RS-232 or Telnet console
connection only provides basic functions. In this chapter, we use the web browser to introduce the EtherDevice
Router’s configuration and monitoring functions.
The following topics are covered in this chapter:

Configuring Basic Settings

Network Settings

Network Redundancy

Static Routing and Dynamic Routing

Network Address Translation (NAT)

Firewall Settings

VPN (Virtual Private Network)

Traffic Prioritization

Configuring SNMP

Using Auto Warning

Using Diagnosis

Using Monitor

Using System Log

Using HTTPs/SSL

EDR-G903/G902 Features and Functions
3-2
The Overview page is divided into three major parts: Interface Status, Basic function status, and Recent 10
Event logs, and gives users a quick overview of the EtherDevice Router’s current settings.
Click More…at the top of the Interface Status table to see detailed information about all interfaces.

EDR-G903/G902 Features and Functions
3-3
Click More…at the top of the “Recent 10 Event Log” table to open the EventLogTable page.
Configuring Basic Settings
The Basic Settings group includes the most commonly used settings required by administrators to maintain and
control the EtherDevice Router.
System Identification
The system identification section gives you an easy way to identify the different switches connected to your
network.
Router name
Setting Description Factory Default
Max. 30 Characters This option is useful for specifying the role or application of
different EtherDevice Router units.
E.g., Factory Router 1.
Firewall/VPN router
[Serial No. of this
switch]
Router Location
Setting Description Factory Default
Max. 80 Characters To specify the location of different EtherDevice Router units.
E.g., production line 1. Device Location
Router Description
Setting Description Factory Default
Max. 30 Characters Use this field to enter a more detailed description of the
EtherDevice Router unit. None

EDR-G903/G902 Features and Functions
3-4
Maintainer Contact Info
Setting Description Factory Default
Max. 30 Characters Enter the contact information of the person responsible for
maintaining this EtherDevice Router None
Web Configuration
Setting Description Factory Default
http or https Users can connect to the EtherDevice Router router via h
ttp or
https protocol. http or https
https only Users can connect to the EtherDevice Router router via https
protocol only.
Accessible IP
The EtherDevice Router uses an IP address-based filtering method to control access to EtherDevice Router
units.
Accessible IP Settings allows you to add or remove “Legal” remote host IP addresses to prevent unauthorized
access. Access to the EtherDevice Router is controlled by IP address. If a host’s IP address is in the accessible
IP table, then the host will have access to the EtherDevice Router. You can allow one of the following cases by
setting this parameter:
•Only one host with the specified IP address can access this device.
E.g., enter “192.168.1.1/255.255.255.255” to allow access to just the IP address 192.168.1.1.
•Any host on a specific subnetwork can access this device.
E.g., enter “192.168.1.0/255.255.255.0” to allow access to all IPs on the subnet defined by this IP
address/subnet mask combination.
•Any host can access the EtherDevice Router. (Disable this function by deselecting the Enable the accessible
IP list option.)
•Any LAN can access the EtherDevice Router. (Disable this function by deselecting the LAN option to not
allow any IP at the LAN site to access this device.)
E.g., If the LAN IP Address is set to 192.168.127.254/255.255.255.0, then IP addresses 192.168.127.1 /24
to 192.168.127.253/24 can access the EtherDevice Router.

EDR-G903/G902 Features and Functions
3-5
The following table shows additional configuration examples:
Allowable Hosts Input Format
Ay host Disable
192.168.1.120 192.168.1.120 / 255.255.255.255
192.168.1.1 to 192.168.1.254 192.168.1.0 / 255.255.255.0
192.168.0.1 to 192.168.255.254 192.168.0.0 / 255.255.0.0
192.168.1.1 to 192.168.1.126 192.168.1.0 / 255.255.255.128
192.168.1.129 to 192.168.1.254 192.168.1.128 / 255.255.255.128
The Accessible IP list controls which devices can connect to the EtherDevice Router to change the configuration
of the device. In the example shown below, the Accessible IP list in the EtherDevice Router contains
10.10.10.10, which is the IP address of the remote user’s PC.
The remote user’s IP address is shown below in the EtherDevice Router’s Accessible IP list.
Password
The EtherDevice Router provides two levels of access privilege: “admin privilege” gives read/write access to all
EtherDevice Router configuration parameters, and “user privilege” provides read access only. You will be able
to view the configuration, but will not be able to make modifications.

EDR-G903/G902 Features and Functions
3-6
•ATTENTION!
•By default, the Password field
is blank. If a Password is already set, then you will be required to
type the Password when logging into the RS-232 console, Telnet console, or web browser
interface.
Account
Setting Description Factory Default
Admin “admin” privilege allows the user to modify all configurations. Admin
User “user” privilege only allows viewing device configurations.
Password
Setting Description Factory Default
Old password
(max. 16 Characters) Type current password when changing the password None
New password
(max. 16 Characters) Type new password when changing the password None
Retype password
(max. 16 Characters) If you type a new password in the Password field, you will be required to retype the password in the Retype new password
field before updating the new password.
None
Time
The Time configuration page lets users set the time, date, and other settings. An explanation of each setting
is given below.
The EtherDevice Router has a time calibration function based on information from an NTP server or user
specified Time and Date information. Functions such as Auto warning “Email” can add real-time information to
the message.

EDR-G903/G902 Features and Functions
3-7
NOTE
The
EtherDevice Router has a real time clock so the user does not need to update the Current Time and
Current Date to set the initial time for the
EtherDevice Router after each reboot. This is especially useful
when
the network does not have an Internet connection for an NTP server
, or there is no NTP server on the network
.
Current Time
Setting Description Factory Default
User adjustable Time The time parameter allows configuration of the local time in
local 24-hour format. None (hh:mm:ss)
Current Date
Setting Description Factory Default
User adjustable date. The date parameter allows configuration of the local date in
yyyy/mm/dd format None (yyyy/mm/dd)
Daylight Saving Time
Daylight Saving Time (also know as DST or summer time) involves advancing clocks 1 hour during the summer
to provide an extra hour of daylight in the evening.
Start Date
Setting Description Factory Default
User adjustable date. The Start Date parameter allows users to enter the date that
daylight saving time begins. None
End Date
Setting Description Factory Default
User adjustable date. The End Date parameter allows users to enter the date that
daylight saving time begins. None
Offset
Setting Description Factory Default
User adjustable date. The offset parameter indicates how many hours forward the
clock should be advanced. None
System Up Time
Indicates the ED-G903’s up time from the last cold start. The unit is seconds.
Time Zone
Setting Description Factory Default
User selectable time
zone
The time zone setting allows conversion from GMT (Greenwich
Mean Time) to local time. GMT
NOTE
Changing the time zone will automatically correct the current time. You should
configure the time zone
before setting the time.
Enable NTP/SNTP Server
Enable this function to configure the EtherDevice Router as a NTP/SNTP server on the network.
Enable Server synchronize
Enable this function to configure the EtherDevice Router as a NTP/SNTP client, It will synchronize the time
information with another NTP/SNTP server.

EDR-G903/G902 Features and Functions
3-8
Time Server IP/Name
Setting Description Factory Default
1st Time Server
IP/Name IP or Domain address (e.g., 192.168.1.1, time.stdtime.gov.tw, or time.nist.gov). None
2nd Time Server
IP/Name The EtherDevice Router
will try to locate the 2nd NTP Server if
the 1st NTP Server fails to connect.
SettingCheck
SettingCheck is a safety function for industrial users using a secure router. It provides a double confirmation
mechanism for when a remote user changes the security policies, such as Firewall filter, NAT, and
Accessible IP list. When a remote user changes these security polices, SettingCheck provides a means of
blocking the connection from the remote user to the Firewall/VPN device. The only way to correct a wrong
setting is to get help from the local operator, or go to the local site and connect to the device through the
console port, which could take quite a bit of time and money. Enabling the SettingCheck function will execute
these new policy changes temporarily until doubly confirmed by the user. If the user does not click the confirm
button, the EtherDevice Router will revert to the previous setting.
Firewall Policy
Enables or Disables the SettingCheck function when the Firewall policies change.
NAT Policy
Enables or Disables the SettingCheck function when the NAT policies change.
Accessible IP List
Enables or Disables the SettingCheck function when the Accessible IP List changes.
Layer 2 Filter
Enable or disable the SettingCheck function when the Layer 2 filter changes.
Timer
Setting Description Factory Default
10 to 3600 sec.
The timer waits this amount of time to double confirm when the
user changes the policies 180 (sec.)
For example, if the remote user (IP: 10.10.10.10) connects to the EtherDevice Router and changes the
accessible IP address to 10.10.10.12, or deselects the Enable checkbox accidently after the remote user clicks
the Activate button, connection to the EtherDevice Router will be lost because the IP address is not in the
EtherDevice Router’s Accessible IP list.