ADSL2+ Service Gateway
HM410dp
User Guide
ADSL2+ Service Gateway
HM410dp
User Guide
.
Copyright
 Ericsson AB - 2004 All Rights Reserved
Disclaimer
No part of this document may be reproduced in any form without the written
permission of the copyright owner.
The contents of this document are subject to revision without notice due to
continued progress in methodology, design, and manufacturing. Ericsson shall
have no liability for any error or damages of any kind resulting from the use of
this document.
Abstract
This document describes configuration and management of the Ericsson
ADSL2+ Service Gateway HM410dp.
Trademark List
Windows
Windows is a registered trademark of Microsoft
Corporation
All other brand and product names are trademarks or registered trademarks
of their respective holders.
ii
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.
Contents
1
Introduction
1
1.1
Structure of this Guide
1
1.2
Product Overview
1
2
Hardware Description and Installation
3
2.1
Before You Start
3
2.1.1
Package Contents
3
2.1.2
Subscription for ADSL Service
3
2.1.3
System Requirements
3
2.2
Physical Appearance
4
2.2.1
Front Panel and LED Indicators
4
2.2.2
Back Panel and Connectors
5
2.3
Placement of the HM410dp
6
2.4
Installation
7
3
Initial Configuration
9
3.1
Introduction
9
3.2
Access the Configuration Wizard
10
3.2.1
DHCP Routed (MER)
12
3.2.2
PPPoE Routed
12
3.2.3
Bridged
14
3.3
Access the Internet
15
4
Advanced Configuration
16
4.1
Introduction
16
4.2
Default Settings
17
4.3
Basic Setup
19
4.3.1
Start
19
4.3.2
Firmware Update
20
4.3.3
Health Check
22
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iii
Contents
4.3.4
Help
27
4.4
Advanced Setup
29
4.4.1
Password
29
4.4.2
Security
32
4.4.3
DHCP Server
44
4.4.4
Internet Access
50
4.4.5
UPnP
56
4.4.6
Save Config
57
4.4.7
Default Settings
58
4.4.8
Backup Restore Config
60
4.4.9
Log
62
5
Configuring PCs
63
5.1
Before You Begin
63
5.2
Obtaining Internet Information Automatically
63
5.2.1
Windows XP
63
5.2.2
Windows 2000
64
5.2.3
Windows Me
65
5.2.4
Windows 95, 98
66
5.3
Assigning Static Internet Information
67
Glossary
iv
68
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Introduction
1
Introduction
This chapter tells you about the scope of this guide and gives a brief
product overview.
1.1
Structure of this Guide
This User Guide contains information that you will need to configure and
manage the ADSL2+ Service Gateway HM410dp.
The following chapters are included:
1.2
•
Chapter 1 – “Introduction” – provides information about this guide and
gives a brief product overview.
•
Chapter 2 – “Hardware Description and Installation” – provides a
hardware description and detailed instructions about how to install the
HM410dp. This is an extract from the “Quick Installation Guide”
provided in the product package.
•
Chapter 3 – “Initial Configuration” – describes how to access the builtin Configuration tool and run the Configuration Wizard in order to
perform the initial configuration.
•
Chapter 4 – “Advanced Configuration” – provides detailed information
about how to perform configuration using the Advanced Setup options
included in the configuration tool.
•
Chapter 5 – “Configuring PCs” – gives instructions for configuring the
Internet settings on your computers to work with the HM410dp.
•
The Glossary includes abbreviations and explanations to technical
terms used in this guide.
Product Overview
The HM410dp acts as an advanced home router. It comes with all the
standard home router functions, such as NAT, a stateful firewall and a
DHCP Server. Additionally, the HM410dp includes a fully featured SIP and
IGMP Proxy, to enable voice and vide devices residing on the home
network.
The key benefits of the HM410dp are:
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1
Introduction
2
•
Top-notch ADSL2+ performance; HM410dp supports ADSL (G992.1)
and the newer ADSL2 (G992.3) and ADSL2+ (G992.5) standards.
•
Quality of Service; Multiple PVCs and ATM level traffic shaping and
policing, together with a learning bridge and static IP routes.
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Hardware Description and Installation
2
Hardware Description and Installation
This chapter describes the product and provides instructions about how to
install the HM410dp in a PC/Windows environment.
2.1
Before You Start
2.1.1
Package Contents
Check the contents of the package against the shipping contents checklist
below. If any of the items is missing, please contact the dealer from whom
the equipment was purchased.
•
ADSL2+ Service Gateway HM410dp
•
Power Supply adapter
•
Ethernet cable
•
ADSL Line cable
•
Table stand
•
Quick Installation Guide
Note:
2.1.2
Your HM410dp package may also include other materials provided
by your service provider.
Subscription for ADSL Service
To use the ADSL2+ Service Gateway HM410dp, you will require an ADSL
service subscription from your broadband service provider.
2.1.3
System Requirements
Computer(s) that will be connected to the HM410dp must meet the
following requirements:
•
10/100Base-T Network Interface Card (NIC) installed.
•
Operating system: Windows 95 or higher, Mac OS X, and Linux.
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3
Hardware Description and Installation
2.2
Physical Appearance
2.2.1
Front Panel and LED Indicators
The HM410dp is equipped with seven (7) status LED (Light Emitting Diode)
indicators as shown in the illustration below.
Figure 1 - Front Panel Indicators
Although the LED functions depend upon the operational state of the
device, each LEDs general purpose is described in the table below (from
top to bottom).
Table 1
4
General Description of LEDs
Label
Color
Description
ADSL
Green
On: ADSL connection is established.
Blinking: Data transmission (activity) or
training.
LAN
Green
On: Ethernet connection to a LAN or single
Ethernet client is established.
Blinking: Data transmission (activity).
Status
Green
On: Status OK.
Blinking: System activity, for example saving
configuration to flash memory.
Power
Green
On: Power is on.
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Hardware Description and Installation
2.2.2
Back Panel and Connectors
The following figure illustrates the back panel of the HM410dp:
Figure 2 - Back Panel of the HM410dp
Description of connectors and buttons:
Table 2
Description of Connectors and Buttons
Label
Description
ADSL
ADSL socket for connection to a splitter/filter of phone
outlet.
Ethernet
Four Ethernet ports for connection to a PC, IP telephone,
set-top box, and/or switch/hub.
Reset
Reset button (tiny hole) for resetting the HM410dp to
factory default settings. Section 4.4.7.1 – “Reset Button”
describes how a reset is done.
0|1
Power switch for turning power on or off.
12V AC 1.2A
Power socket for connecting the power supply adapter.
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5
Hardware Description and Installation
2.3
Placement of the HM410dp
The HM410dp can be placed either in a horizontal or upright position on a
flat surface (i.e. a table) as shown in the figures below:
Note:
Proper ventilation is necessary to prevent the product from overheating. Do not block or cover the slots and openings on the
device, which are intended for ventilation and proper operation.
Figure 3 - Alternative Placement for the HM410dp
If you choose to place the HM410dp in an upright position, use the provided
table stand and fit the 4 pins on the table stand into the holes on the bottom
of the unit:
Figure 4 - Mounting of the Table Stand
6
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Hardware Description and Installation
2.4
Installation
Follow the procedure below to make the physical cable connections to the
HM410dp. Figure 5 shows an installation example that can be used as a
reference.
4
1
3
2
Figure 5 - HM410dp Installation Example
1
Connect the ADSL Line
Connect one end of the provided ADSL Line cable to the ADSL port
on the HM410dp. Connect the other end to your ADSL service port
(splitter/filter or phone outlet).
2
Connect Ethernet device(s)
Attach the provided Ethernet cable to one of the ports marked
Ethernet on the HM410dp.
Connect the other end to an Ethernet port on a PC, Set-Top Box, IP
telephone or Ethernet switch/hub. You can simultaneously use as
many cables and ports that you need depending on available services
and devices.
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7
Hardware Description and Installation
8
3
Connect the Power adapter
Connect the cable from the Power Adapter to the POWER socket on
the HM410dp and then insert the plug into a power source.
4
Switch on the Power
Switch on the power by turning the power switch to 1.
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Initial Configuration
3
Initial Configuration
This chapter describes how to access the built-in Configuration tool and run
the Configuration Wizard in order to perform the initial configuration.
3.1
Introduction
The HM410dp is an advanced ADSL router with several features and
supported modes that make it ideal for advanced home networking. The
HM410dp offers a Configuration Wizard that enables you to easily
configure the HM410dp through a user friendly GUI. No special software is
required on your PC to manage and operate the HM410dp. All you need is
a web browser.
In the Configuration Wizard you can select an Internet Access type that fits
your needs. There are currently three pre-defined access types as shown in
the table below where they are briefly described.
Table 3
Description of Internet Access Types
Connection Type
Select Internet Access Type
Connect using DHCP or fixed IP
address (without a Username and
Password).
DHCP Routed (MER)
Bridged
Some operators provide Username
and Password also for this type of
connection, but the login procedure
is in this case done from a web
page or similar.
Connect using PPPoE (sometimes
called dial-up). This type of
connection requires a Username
and a Password.
PPPoE Routed
The HM410dp still offers the possibility for advanced users to set up special
network scenarios themselves or to modify the existing ones. Refer to
chapter 4 – “Advanced Configuration” for further information.
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9
Initial Configuration
3.2
Access the Configuration Wizard
Follow the steps below to access the built-in Configuration tool and start the
Configuration Wizard.
Note:
Before performing the following steps make sure that all the steps
in section 2.4 - ”Installation” has been performed.
1
Start your web browser and type http://192.168.1.1 (the IP address for
the HM410dp) in the URL field and hit Enter.
2
To access the Configuration tool you have to login and the following
window is displayed:
3
Type admin in both the “User name” and “Password” fields and click
OK
10
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Initial Configuration
4
The welcome page of the Configuration tool is displayed:
5
Click on the Configuration Wizard > button to display the start page of
the wizard:
Three types of Internet access can be setup through this wizard and
each one is described in detail in the following subsections.
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11
Initial Configuration
3.2.1
DHCP Routed (MER)
The DHCP Routed (MER) access type means that the HM410dp operates
as a bridge to the WAN while simultaneously operating as a router to the
LAN.
This access type is “Always on” meaning that you is automatically
connected to your ISP whenever you use your Internet connection. The
HM410dp automatically activates the NAT service and its internal DHCP
server. PCs on the LAN will be assigned private IP addresses from the
built-in DHCP server and the NAT service will route the traffic to/from the
WAN.
To configure the HM410dp for DHCP Routed (MER) access type, follow the
steps below:
3.2.2
1
From the Start page, click the Configuration Wizard > button to display
the following page:
2
Select DHCP routed (MER) and click the Next> button. The Confirm
page for Internet access appears:
3
Click the Confirm Changes button to save your Internet access
setting.
PPPoE Routed
The PPPoE (or dial-up) access type is used by the ISP to identify users and
allow them access to the Internet. You have to enter a valid Username and
12
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Initial Configuration
Password provided by your ISP. Once you have entered your Username
and Password within this Wizard, the HM410dp will automatically connect
to your ISP whenever you use your Internet connection.
The HM410dp automatically activates the NAT service and its internal
DHCP server. PCs on the LAN will be assigned private IP addresses from
the built-in DHCP server and the NAT service will route the traffic to/from
the WAN.
Note:
If you already have PPPoE client software installed on your
computer(s), you must uninstall it. This can be done after
completing this wizard.
To configure the HM410dp for PPPoE Routed access type, follow the steps
below:
1
From the Start page, click the Configuration Wizard > button to display
the following page:
2
Select PPPoE routed and click the Next> button. The following page
appears:
3
Enter your ”Username” and ”Password” provided by your ISP and click
the Next> button. The Confirm page for Internet access appears:
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13
Initial Configuration
4
3.2.3
Click the Confirm Changes button to save your Internet access
setting.
Bridged
By using this access type the HM410dp will act as a bridge, meaning that
the routing functionality (Firewall, NAT, UPnP, etc) will be disabled. This
access type is suitable if you only want to connect a single computer to the
Internet and want to perform all special functionality in the computer instead
of the built-in capabilities of the HM410dp. This access type is “Always on”
meaning that you is automatically connected to your ISP whenever you use
your Internet connection.
Note:
If your ISP uses PPPoE you must have a PPPoE client software
installed on your PC.
To configure the HM410dp for Bridged access type, follow the steps below:
14
1
From the Start page, click the Configuration Wizard > button to display
the following page:
2
Select Bridged and click the Next> button. The Confirm page for
Internet access appears:
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Initial Configuration
3
3.3
Click the Confirm Changes button to save your Internet access
setting.
Access the Internet
Your Internet Service Provider (ISP) may have provided you additional
instructions (in the package or separately) about account setup, additional
software installation, and/or Internet usage. In that case, please follow
those instructions to complete your Internet connection setup.
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15
Advanced Configuration
4
Advanced Configuration
This chapter describes detailed information about the how to perform
configuration using the Basic/Advanced Setup options.
4.1
Introduction
The HM410dp offers the possibility for advanced users to set up special
network scenarios themselves or to modify the existing ones.
Follow the steps in section 3.2 – “Access the Configuration Wizard” to
display the start page of the configuration tool:
This is the first page that is displayed each time you log in to the
configuration pages. The page shows an overview of the Current
Configuration.
The left-hand menu includes links to pages that allows you to configure
your device. The menu is split into two separate lists;
16
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Advanced Configuration
•
Basic Setup
Contains entries that display general information about the device
including links to pages that you are most likely to want to use.
•
Advanced Setup
Contains entries that allow you to change the default settings on your
device.
Click on an individual menu entry to display a new page including
information and/or configuration options.
4.2
Default Settings
In addition to handling the DSL connection to your ISP, the HM410dp can
provide a variety of services to your network. The device is preconfigured
with default settings for use with a typical home or small office network.
The table below lists some of the most important default settings; these and
other features are described fully in the subsequent chapters. If you are
familiar with network configuration, review these settings to verify that they
meet the needs of your network. Follow the instructions to change them if
necessary. If you are unfamiliar with these settings, try using the device
without modification, or contact your ISP for assistance.
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17
Advanced Configuration
Note:
Before you modify any settings, we strongly recommend that you
contact your ISP prior to changing the default configuration.
Table 4
18
Default Configuration Settings of the HM410dp
Parameter
Value
LAN IP Address / Subnet Mask
192.168.1.1 / 255.255.255.0
DHCP Server
Enabled with the following pool of
IP addresses:
192.168.1.2 through 192.168.1.21
DNS Server
192.168.1.1
Default Gateway
192.168.1.1
NAT (Network Address Translation)
Enabled
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Advanced Configuration
4.3
Basic Setup
The Basic Setup contains entries that display general information about the
device including links to pages that you are most likely to want to use.
4.3.1
Start
The Basic Setup > Start page displays useful information about the
current configuration of your device:
•
First Time Settings
This is the start point for the Configuration Wizard that leads you
through the most important settings for your local Internet connection.
•
Current Configuration
This part gives an overview of the current configuration regarding
security and Internet access settings.
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19
Advanced Configuration
4.3.2
Firmware Update
The Basic Setup > Firmware Update page displays the current version of
the firmware in the HM410dp and allows you to update the firmware if you
have received a newer version.
The firmware is a software program which is stored as read-only memory
on your device.
To transfer a new firmware file and update the HM410dp, follow the steps
below:
20
1
Download the new firmware file to your local PC.
2
Click the Browse… button to locate the file.
3
Once you have selected the file to be installed, click Open. The file’s
directory path is displayed in the “Update file:” field.
4
Click the Update Now> button. The device checks that the selected file
contains an updated version of firmware and starts the installing
procedure. The following window is displayed during the process:
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Advanced Configuration
5
The installing procedure may take several minutes, after which you will
be asked to restart the HM410dp:
6
Click the Restart button. The restart ensures that any new features
provided by the firmware update become available to you.
7
When the restart is complete you will automatically be redirected to the
Start page.
Note:
Installing a firmware update does not make any changes to your
current settings, so your Internet connection will be unaffected by
the update.
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21
Advanced Configuration
4.3.3
Health Check
The Basic Setup > Health Check page allows you to run a health check to
test whether the Internet connection on your device is working properly.
The health check runs a number of tests in order to diagnose any “health”
problems with your device’s Internet access.
If you need to contact your ISP, they may ask you to run the Health Check
and describe the results to them.
This page also provides you with a link to the DSL status page, which
displays detailed information about your DSL connection.
This page asks you to ensure that your device is connected to your phone
line. See section 2.4 - ”Installation”
To perform a Health Check, follow the steps below:
1
22
Click on the Perform Health Check > button. The following page
confirms that the health check is currently running.
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Advanced Configuration
The Health Check may take up to three minutes to complete.
2
Once the health check has finished running, the Health Check:
Complete page is displayed. The most important details displayed on
this page are the Result, Test and Diagnostic information:
−
Result; tells you the overall result of the health check.
−
Test; if the health check fails, this tells you which test caused the
failure. The first test that fails stops the health check completely –
no other tests are run after the first failed test. If the health check is
successfully completed, “User Diagnostics complete” is displayed.
−
Diagnostic; if the health check fails, this provides technical
information about the likely cause of a health check failure. If a
failure occurs, you will need to give this information to your ISP’s
support team. If the health check is successfully completed, no
diagnostic information is displayed.
For example, if you run the Health Check on your device when the DSL
port is not connected, the following information may be displayed:
This page tells you that the result failed. The test that caused the health
check to fail was the physical connection test. The diagnostic
information displays details about the failure that you can pass on to
your ISP support team.
This page also contains links to the Start page (including current
configuration information) where it may be worth checking the settings
if the health check failed.
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23
Advanced Configuration
If you want to run the health check again, click on the Health Check
link at the bottom of the page, or from the left-hand Basic Setup menu,
click on Health Check.
4.3.3.1
DSL Status Page
From the Health Check page you can click on the DSL Status link to
display the following page:
This page displays useful information about the status of your DSL
connection, including:
•
24
Operational mode; the current connected mode. Possible values
displayed are:
−
Inactive (not connected)
−
Unknown (unrecognized mode)
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Advanced Configuration
−
•
•
Name of the standard compliance used by the connection (for
example G.dmt.BisPlus).
State; the current state of the device. Possible values displayed are:
−
Idle (not connected or attempting to connect)
−
Handshake (hunting for a remote modem)
−
Training (remote modem has been found)
−
Showtime (connected to the remote modem)
Trained transmit/receive bit rate; the transmit/receive rates of the
device (in bits per second).
Click on the DSL port configuration… link at the top of the DSL Status
page. The following page is displayed:
In addition to information about the status of your DSL connection (also
displayed on the DSL Status page), this page displays the current attribute
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25
Advanced Configuration
settings for your DSL port and allows you to configure these settings. The
DSL port is called port A1.
Note:
You should only edit your DSL port configuration if your ISP has
told you to do so and/or if you are experienced in DSL attribute
configuration.
Once you have configured DSL port attributes, click on the Apply button.
The page is refreshed and the device is updated with your DSL
configuration changes. Clicking on the Reset button before you click on
Apply will reset attribute values to their previous settings.
You can also display and configure advanced DSL port attributes. At the
top of the Port A1 Configuration page, click on the View advanced
configuration ... The page displayed contains many advanced attributes:
Note:
26
You should only edit your DSL port configuration if your ISP has
told you to do so and/or if you are experienced in DSL attribute
configuration.
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Advanced Configuration
Once you have configured advanced DSL port attributes, click on the
Apply button. The page is refreshed and the device is updated with your
DSL configuration changes. Clicking on the Reset button before you click
on Apply will reset attribute values to their previous settings.
4.3.4
Help
The Basic Setup > Help page displays an index of the help information
that corresponds with each web page.
You can click on the Help link on any web page in order to display further
information about a specific topic on a specific page. However, you may
prefer to display the Help text index in order to navigate through Help topics
more easily.
Each heading is a link to another help page. Click on a heading to display
information about a specific page. For example, clicking on Security
displays the Help: Security page. The same page is displayed by clicking
on the Help link on the Security page itself.
If you have clicked on a heading to display one of the help pages, the lefthand menu is replaced by the following:
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27
Advanced Configuration
To go back to the Help index page and display the menus for the setup
pages, either click on the Back link provided or click the Back button in
your browser.
28
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Advanced Configuration
4.4
Advanced Setup
The Advanced Setup contains entries that allow you to change the default
settings on your device.
4.4.1
Password
The Advanced Setup > Password page lets you restrict access to your
device’s web pages using password protection. With password protection
enabled, users must enter a username and password before gaining
access to the web pages.
Note:
Enabling password protection does not affect access to the
Internet, only to the HM410dp web pages.
By default, password protection is enabled on your device, and the
username and password set are as follows:
•
Username: admin
•
Password: admin
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29
Advanced Configuration
The password page displays the current status of password protection.
To change your password settings, follow the steps below:
30
1
Click on the Change Password settings here… link to display the
following page:
2
This page allows you to enable or disable password protection.
Protection is already enabled by default. Click the Next> button to
display the following page:
3
This page displays the current Username and Password settings. Type
your own unique username and password in the relevant boxes. They
can be any combination of letters or numbers with a maximum of 20
characters. The default setting uses admin for both the username and
password. We recommend that you do not set the same character
combination for both username and password.
Click the Next> button and the following confirmation page is
displayed:
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Advanced Configuration
4
This page confirms that password protection is enabled and displays
the username that will be required in order to access the web pages. If
you are happy with these settings, click the Confirm Changes button.
5
Now you need to login to the web pages using your new username
and/or password:
6
Enter your new Username and/or password and click the OK button.
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31
Advanced Configuration
4.4.2
Security
The Advanced Setup > Security page allows you to configure advanced
security features that protect your network by blocking unwanted traffic
from the Internet.
If you simply want to connect from your local network to the Internet, you do
not need to make any changes to the default Security configuration. You
only need to edit the configuration if you wish to do one or both of the
following:
•
Allow Internet users to browse the user pages on your local network
(for example, by providing an FTP or HTTP server)
•
Play certain games which require accessibility from the Internet.
By default the IP addresses of your LAN PCs are hidden from the Internet.
All data sent from your LAN PCs to a PC on the Internet appears to come
from the IP address of your device. In this way, details about your LAN PCs
remain private. This security feature is called Network Address Translation
(NAT).
32
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Advanced Configuration
4.4.2.1
Firewall Settings
The Firewall is by default disabled meaning that the configuration is set to
allow all PCs on your network to contact all Internet web sites. You can
configure HM410dp to block access to certain Internet Websites from some
or all the PCs on your network.
From the Advanced Setup menu, click on Security. The “Security State”
part displays information about the security settings.
To change the state of the Firewall select Enabled and click the Change
State button.
Note:
To save the Firewall state permanently, you MUST perform a Save
Config. From the left hand menu, select Advanced Setup > Save
Config and then click the Save button.
A new part named “Firewall Configuration” is now displayed on the Security
page. Click on the link Configure Port Filters to create a port filter:
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33
Advanced Configuration
The port filters currently created are displayed, and if you want to delete
any of them just click the Delete link.
To add a new port filter, click the Add Filter link. The following page is
displayed:
Enter parameters according to the following:
34
•
Source IP Address and Mask;
If you wish to filter packets originating from a certain node or subnet,
enter the IP address and subnet mask that identifies this node on the
network.
•
Destination IP Address and Mask;
If you wish to filter packets addressed to a certain node or subnet,
enter the IP address and subnet mask that identifies that destination
node on the Internet. The Mask field is disregarded if you leave it as
0.0.0.0.
•
Protocol;
Select the protocol you want to use in the drop-down list.
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Advanced Configuration
•
Source/Destination Port Range;
Enter the starting and ending port numbers that identify the service that
you want to filter, e.g. web service is on port 80 and FTP on port 21.
•
Direction;
From the drop-down lists, choose whether to filter the packets that are
incoming (In) or outgoing (Out) with respect to the interface. The action
can be “Allow” or “Block”.
When you have made your settings, click the Apply button. You will now
return to the Port filter list where your new port filter is displayed.
Note:
4.4.2.2
To save the port filters permanently, you MUST perform a Save
Config. From the left hand menu, select Advanced Setup > Save
Config and then click the Save button.
Configuring NAT Security
Certain network games, chat or file sharing software do not work with your
default NAT setting. Your device knows the port, protocol and trigger
information needed to allow access to the common applications listed
below, but by default, access to them is disabled.
Table 5
Common Applications
Application
TCP port
number
UDP port
number
Trigger
required?
E-mail
110, 25
N/A
False
News
119
N/A
False
MSN Messenger
1863
N/A
False
Yahoo! Instant Messenger
5050
5055
5100
N/A
False
AOL Instant Messenger
5190
N/A
False
Internet Relay Chat (IRC)
194
194
False
1720
N/A
True
N/A
1719
True
1731, 522
N/A
False
544
7070
544
6770
False
Netmeeting (h323)
Real Audio
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35
Advanced Configuration
Application
TCP port
number
UDP port
number
Trigger
required?
Ping
N/A (ICMP)
N/A (ICMP)
False
Web connections (HTTP,
HTTPS)
80
443
N/A
False
51210
N/A
True
DialPad
N/A
51200
51201
True
FTP
21
N/A
False
Telnet
23
N/A
False
Secure shell (SSH)
22
N/A
False
Windows Media Services
1755
1755
False
Gnutella
6346
N/A
False
Kazaa
1214
N/A
False
Windows Terminal Server
3389
N/A
False
DNS
N/A
53
False
PPTP
1723
1723
False
IKE (”Internet Key Exchange”)
N/A
500
False
LDAP
389
N/A
False
GRE
N/A (GRE)
N/A (GRE)
False
Databeam (T.120)
1503
N/A
false
You can allow access to a common application from a specific PC on your
network by enabling it. For more information, see section 4.4.2.4 ”Configuring Internet Applications”.
If you want to allow access to an application that is not included in the
above list of common applications, you can create and enable a custom
application. For more information, see section 4.4.2.5 - ”Configuring
Custom Applications”.
Before you can configure your default NAT settings, you must assign a
unique name to each of the PCs on your network. See below.
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Advanced Configuration
4.4.2.3
Assigning PC Names
You must assign a name to each of the PCs on your network before you
can enable access to common applications or create custom ones. This
allows you to refer to PCs by name instead of IP address.
1
From the left-hand Advanced Setup menu, click on Security.
2
Click on Configure named PCs link (in the Virtual Server section) to
display the following page:
This page displays the names previously assigned to PCs on your
network. To assign a name to an unnamed PC, click Add a new PC
name. The following page is displayed:
3
Type a unique, meaningful name in the “PC name” text box, then type
the IP address of the PC that you want to assign this name to. Click on
the Next> button to display the confirmation page:
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Advanced Configuration
4
If you are happy with the name that you have assigned to the IP
address, click the Confirm Changes button. You will then return to the
Security: PC Names page where your newly added PC name now
appears:
5
To remove a PC name, click the link Remove a PC name. The
following page is displayed:
6
Select the PC name you want to remove from the drop-down list and
click the Next> button. A confirmation page is displayed where you
click the Confirm Changes button to confirm the removal.
Once you have assigned PC names, you can enable Internet access to
applications as described in the following sections.
4.4.2.4
Configuring Internet Applications
This section assumes that you have already assigned names to the PCs on
your network as described in the previous section.
You can enable/disable a specific Internet application in order to
allow/block access to it via an individual PC.
1
38
From the left-hand Advanced Setup menu, click on Security.
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Advanced Configuration
2
Click on the Enable/Disable Internet applications link (in the Virtual
Server section) to display the following page:
This page displays details about applications that are currently
enabled.
3
Click on Enable an application here… to display the following page:
4
This page allows you to select which application you wish to enable for
a specific PC. The “Application name:” drop-down list contains the
following:
5
−
The common applications that your device knows about.
−
Any custom applications that you have manually configured.
Select the application and the PC that you want to enable access to
and click the Next> button. The following confirmation page is
displayed:
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39
Advanced Configuration
4.4.2.5
6
If you are happy with your application configuration, click the Confirm
Changes button. You will return to the Security: Enabled Applications
page containing details about the applications that are currently
enabled:
7
To disable an application, click the Disable an application here… link.
The following page is displayed:
8
Select the application you want to disable from the drop-down list and
click the Next> button. A confirmation page is displayed where you
click the Confirm Changes button.
Configuring Custom Applications
If you want to enable access to an application that does not appear on your
device’s default list, you can create a custom application.
In order to create a custom application, you must know:
40
1
The protocol used by the application (e.g. TCP, UDP and so on).
2
The primary port or range of ports used by the application.
3
Whether the application requires a trigger and if so, the secondary port
or range of ports used by the application.
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Advanced Configuration
4
The address translation type used by the trigger.
Your application provider or games manufacturer should provide you with
these details.
To create a custom application, follow the steps below:
In this example configuration, a custom application called network game
using TCP port 5555 is created.
1
From the left-hand Advanced Setup menu, click on Security.
2
Click on the Define custom applications link to display the following
page:
3
This page displays details of previously created custom applications.
Click Add a new custom application to display the following page:
4
Type a unique name for your custom application, and select the
transport protocol from the “Transport” drop-down list. Click the Next>
button and the following page is displayed:
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41
Advanced Configuration
5
Type a port range by entering the start and end of the range in the two
boxes provided. If you want to use a single port, enter the port number
in the first box and leave the second box blank.
Note:
42
You must ensure that the single port or range specified does not
overlap with a port or range for an existing common or custom
application. See the common port ranges listed in section 4.4.2.2 –
“Configuring NAT Security”.
6
Select the address translation type (NONE, TCP, UDP or TCP and
UDP) from the drop-down list. This controls the translation of binary IP
addresses in the payload of a packet (the part containing data). Click
the Next> button to display the confirmation page:
7
This page confirms you custom application configuration. If you are
happy with the details displayed, click the Confirm Changes button.
You will return to the Security: Custom Applications page containing
details of the custom application that you have just created.
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Advanced Configuration
8
To delete a custom application, click the Delete a custom application
link. The following page is displayed:
9
Select the application you want to remove from the drop-down list and
click the Next> button. A confirmation page is displayed where you
click the Confirm Changes button.
In order to access your custom application, you must first enable it. See
section 4.4.2.4 - ”Configuring Internet Applications”.
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43
Advanced Configuration
4.4.3
DHCP Server
The Advanced Setup > DHCP Server page allows you to configure the
built-in DHCP server.
The HM410dp incorporates a DHCP server that dynamically assigns IP
addresses and serves as a DNS server to the PCs on your LAN.
By default there is one DHCP Server Subnet created for the LAN interface.
The IP address range on the LAN interface is 192.168.1.2 through
192.168.1.21.
Note:
4.4.3.1
By default the DHCP server is enabled on the private LAN interface
but if you already have a DHCP server on your network you should
disable this function.
Enable/Disable the DHCP Server
The current status of the DHCP server is displayed on the top of the DHCP
Server page. If enabled (default) a Disable button is shown which you
click on to disable the DHCP server. When the DHCP server is disabled the
button shows Enable instead.
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Advanced Configuration
4.4.3.2
DHCP Server Subnets
To change the settings for a DHCP Server subnet, click the Edit link for the
subnet you want to change. The following page is displayed:
The upper part (“Edit Address”) of the window allows you to change the
default LAN IP address and subnet mask of the HM410dp. If you want to do
so, click the Change Address link to display the following page:
Enter your new “IP address” and “Subnet mask” in the corresponding fields
and click the Confirm Changes button.
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Advanced Configuration
Note:
If you change the LAN IP address while connected through your
Web browser, you will be disconnected. You must open a new
connection by entering your new LAN IP address as the URL.
In the lower part of the window you can change the settings for the subnet
as described below:
IP addresses to be available on this subnet lets you specify the range of
IP addresses that can be assigned to PCs on your LAN.
DNS server option information includes settings for the DNS server. You
can check the “Use local host address as DNS server” box to use this host
46
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Advanced Configuration
as the default DNS. Or, you can uncheck the box and manually set up the
DNS IP address in the “Primary/Secondary DNS server address”.
The DNS server addresses will be passed to the DHCP clients along with
the IP addresses. The DHCP clients use the DNS to map a domain name
to its corresponding IP address and vice versa.
Default gateway option information; The HM410dp always uses local
host as default gateway.
When you have entered the details for the DHCP Server Subnet
configuration, click the Confirm Changes button.
Use the Reset button to reset all settings to default settings.
Note:
To save your DHCP Server subnet configuration you MUST
perform a Save Config to save the configuration to non-volatile
memory. From the left hand menu, select Advanced Setup > Save
Config and then click the Save button.
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47
Advanced Configuration
4.4.3.3
Fixed Hosts
If you want to assign a specific IP address to a device (e.g. a PC or a
printer) on your LAN, you can create a fixed mapping between an IP
address and the device’s MAC address.
The lower part of the DHCP Server page includes settings for “Fixed
Hosts”:
To create a new mapping click the Create link to view the following page:
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Advanced Configuration
Enter the IP address you want to assign and the unique MAC address of
the device. In the “Maximum lease time” field enter the time (in seconds)
you want the network device to lease the IP address before it is reassigned.
The default value is 86400 seconds (24 hours).
Click the OK button to confirm your settings. You will now return to the
DHCP Server page where your fixed mapping is displayed in the lower part
of the window:
To change any of the settings, enter the new ones and click the Confirm
Changes button. If you want to delete a fixed mapping, tick the Delete box
and click the Confirm Changes button.
Note:
To save confirmed settings you MUST perform a Save Config to
save the configuration to non-volatile memory. From the left hand
menu, select Advanced Setup > Save Config and then click the
Save button.
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49
Advanced Configuration
4.4.4
Internet Access
The Advanced Setup > Internet Access page allows you to change the
way that your device connects to the Internet. Your ISP determines what
type of Internet access you should use and provides you with any
information that you need in order to configure the Internet access to your
device.
Your device needs the following address information in order to access the
Internet:
•
IP address and subnet mask;
The IP address and subnet mask assigned to your WAN interface.
•
Default Gateway;
The gateway address that identifies the ISP server through which your
Internet connection will be routed.
•
DNS Servers;
The Dynamic Name System (DNS) servers used by your ISP to map
host names and IP addresses.
In most cases, you will not need to configure your device with these
addresses because your ISP is likely to use an Internet access type which
automatically assigns addresses to your device.
When running the Configuration Wizard these settings and addresses are
automatically set when choosing one of the pre-defined Internet Access
types.
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Advanced Configuration
4.4.4.1
Editing a Service
1
From the left hand Advanced Setup menu, click on Internet Access.
One of the following pages is displayed (depending on what Internet
access type is currently defined):
This page displays information about the external connections currently
defined.
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Advanced Configuration
2
Click the corresponding Edit link in the “Rfc1483 Settings” or “PPPoE
Settings” column to make changes to a service. The following window
is displayed for a service when running DHCP routed (MER) as access
type:
For this type of connection the Encapsulation method can be
changed to be either “LlcBridged” or “VcMuxBridged”.
If your Internet access type is set to PPPoE routed, the following page
is displayed when clicking the corresponding Edit link:
Here you can change your PPP Username and Password if your ISP
has provided you new ones.
52
3
Make your changes and click the Confirm Changes button.
4
Click the corresponding Edit link in the “ATM Channel settings” column
to change the ATM attributes for a connection. The following window is
displayed:
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Advanced Configuration
5
4.4.4.2
Enter the values provided by your ISP and click the Confirm Changes
button. A short description of each value is provided in the online help
by clicking the Help link.
Deleting a Service
When running DHCP routed (MER) or Bridged access types you can
delete a service by doing the following:
1
Click the corresponding Delete link to delete a connection. The
following window is displayed:
2
Confirm the removal by clicking the Delete button.
Note:
To save your changes (removal of a WAN connection) you MUST
perform a Save Config to save the configuration to non-volatile
memory. From the left hand menu, select Advanced Setup > Save
Config and then click the Save button.
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53
Advanced Configuration
4.4.4.3
Creating a new Service
When running DHCP routed (MER) or Bridged access types you can
create a new service by performing the following steps:
1
From the left hand Advanced Setup menu, click on Internet Access.
Below the list of currently defined connections, click the Create new
connection link to display the following page:
2
Enter a unique name for your new connection in the Description field
and type the VPI/VCI settings that your ISP has provided. Also select
an Encapsulation method from the drop-down list. Click on the Create
button.
3
You will now return to the Internet Access page.
Note:
54
To save the creation of your new WAN connection you MUST
perform a Save Config to save the configuration to non-volatile
memory. From the left hand menu, select Advanced Setup > Save
Config and then click the Save button.
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Advanced Configuration
4.4.4.4
Manual IP Setup
When running DHCP routed (MER) as access type you can manually
setup your Internet connection. Your ISP must then provide you with the
following information:
•
The WAN IP address and subnet mask for your device.
•
The Internet Gateway address.
•
The primary and secondary DNS addresses.
To manually setup your Internet access, perform the following steps:
1
From the left hand Advanced Setup menu, click on Internet Access.
On the Internet Access page click the Static IP Setup link to display
the following page:
2
Click in each box and type the relevant address information provided
by your ISP and click the Confirm Changes button.
3
You will now return to the Internet Access page and your configuration
is complete.
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55
Advanced Configuration
4.4.5
UPnP
The Advanced Setup > UPnP page allows you to enable/disable the
UPnP function.
Universal plug and play (UPnP) is a networking architecture that provides
compatibility among networking equipment, software and peripherals of the
400+ vendors that are part of the Universal Plug and play Forum. UPnP
works with wired or wireless networks and can be supported on any
operating system.
When UPnP is enabled it will help your programs to pass the NAT and it
will also appear as a UPnP device on your network. Future programs will
use this device for different purposes. Programs like MSN Messenger and
a lot of network enabled games use UPnP.
The current status (enabled/disabled) of UPnP and which port is used is
displayed on this page.
To disable UPnP click on the Disable button.
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Advanced Configuration
4.4.6
Save Config
The Advanced Setup > Save Config page allows you to save all current
configurations to non-volatile memory.
Most settings you apply on the pages in the configuration tool will take
effect immediately and be saved to non-volatile memory. In case a manual
save is necessary, this is noted in the graphical user interface as the
following example:
Notice: After <action> use Save Config to save it permanently.
Click the Save button to save all settings.
Note:
Do not turn off your HM410dp while the configuration is being
saved.
A confirmation is shown when the configuration has been saved:
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57
Advanced Configuration
4.4.7
Default Settings
The Advanced Setup > Default Settings page allows you to reset your
device to its default factory settings.
The configuration settings of your device are stored in a configuration file.
When you set up your device and access the web pages for the very first
time, the configuration file contains a default factory configuration.
If you do make changes to the default configuration but then wish to revert
back to the original factory configuration, you can do so by resetting the
device to factory defaults.
Note:
If you reset your device to factory defaults, all previous
configuration changes that you have made are overwritten by the
factory default configuration.
To reset your HM410dp to default settings, follow the steps below:
1
58
The Default Settings page reminds you that the resetting to factory
defaults cannot be undone – any changes that you have made to the
basic settings will be lost.
If you are happy with this, click in the “Confirm” box to tick it and then
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Advanced Configuration
click the Reset to Defaults button. The following page is displayed:
2
Once the reset is complete, the Start page is displayed.
Note:
4.4.7.1
Resetting to defaults also resets the username and password to
their default settings. If you have previously changed the username
and password the “Connect to …” or “Enter Current Password”
login box will be displayed.
Once you have entered the default settings (admin, admin) and
clicked OK , the Start page is displayed.
Reset Button
You can also reset the HM410dp to factory default settings using the Reset
button (tiny hole) on the back panel of the unit. This method is used if you
are unable to access the configuration pages.
To reset the HM410dp using the Reset button, follow the steps below:
1
Power off the unit.
2
By using the tip of a pen press the Reset button and power on the unit.
Keep the button pressed for at least four seconds.
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59
Advanced Configuration
4.4.8
Backup Restore Config
The Advanced Setup > Backup Restore Config page allows you to save
a backup file of your current configuration and to restore your configuration
from a previously saved file.
4.4.8.1
Backup Configuration
To save a backup file of your current configuration proceed as follows:
1
Click on the Backup button and the following page is displayed:
2
In the “Save as” windows select a folder to save your configuration file
in and click OK . The download starts.
3
When the downloading is complete close the window.
Note:
60
Do not modify this configuration file since it then will be invalid and
not accepted if you want to make a restore.
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Advanced Configuration
4.4.8.2
Restore Configuration
To restore your configuration from a previously saved file proceed as
follows:
1
Click on the Browse… button to locate your backup file.
2
Once you have selected the file to be installed, click Open. The file’s
directory path is displayed in the “Configuration File” field.
3
Click on the Restore button and the following window is displayed:
4
When the restoring is completed the following window appears:
5
Click the save link to save the configuration (otherwise the new
settings are only valid until the next reboot).
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61
Advanced Configuration
4.4.9
Log
The Advanced Setup > Log page displays an error log. The most recent
errors are listed at the bottom of the list and the “When” column shows the
time in seconds since the last reboot of the HM410dp.
Click the Clear Log button to clear the log.
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Configuring PCs
5
Configuring PCs
This chapter provides instructions for configuring the Internet settings on
your computers to work with the HM410dp.
5.1
Before You Begin
By default, the HM410dp automatically assigns the required Internet
settings to your PCs. You need only to configure the PCs to accept the
information when it is assigned.
Note:
5.2
In some cases, you may want to assign Internet information
manually to some or all of your computers rather than allow the
HM410dp to do so. See section 5.3 – “Assigning Static Internet
Information”.
Obtaining Internet Information Automatically
Follow the instructions that correspond to the operating system installed on
your PC.
5.2.1
Windows XP
1
In the Windows task bar, click the Start button, and then click Control
Panel.
2
Double-click on the Network Connections icon.
3
In the LAN or High-Speed Internet window, right-click on the icon
corresponding to your network interface card (NIC) and click the
Properties button. (Often, this icon is labeled Local Area Connection).
The Local Area Connection dialog box is displayed with a list of
currently installed network items.
4
Ensure that the check box to the left of the item labeled Internet
Protocol TCP/IP is checked and click the Properties button.
5
In the Internet Protocol (TCP/IP) Properties dialog box, click the radio
button labeled Obtain an IP address automatically. Also click the
radio button labeled Obtain DNS server address automatically.
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Configuring PCs
6
5.2.2
Click OK twice to confirm your changes, and then close the Control
Panel.
Windows 2000
First, check for the IP protocol and, if necessary, install it:
1
In the Windows task bar, click the Start button, point to Settings, and
then click Control Panel.
2
Double-click the Network and Dial-up Connections icon.
3
In the Network and Dial-up Connections window, right-click the Local
Area Connection icon, and then click the Properties button.
The Local Area Connection Properties dialog box is displayed with a
list of currently installed network components. If the list includes
Internet Protocol (TCP/IP), then the protocol has already been
enabled. Skip to step 10.
4
If Internet Protocol (TCP/IP) does not display as an installed
component, click the Install… button.
5
In the Select Network Component Type dialog box, select Protocol,
and then click the Add… button.
6
Select Internet Protocol (TCP/IP) in the Network Protocols list, and
then click OK .
You may be prompted to install files from your Windows 2000
installation CD or other media. Follow the instructions to install the files.
7
If prompted, click OK to restart your computer with the new settings.
Next, configure the PCs to accept IP information assigned by the
HM410dp:
8
In the Control Panel, double-click the Network and Dial-up
Connections icon.
9
In the Network and Dial-up Connections window, right-click the Local
Area Connection icon, and then click the Properties button.
10 In the Local Area Connection Properties dialog box, select Internet
protocol (TCP/IP), and then click the Properties button.
11 In the Internet Protocol (TCP/IP) Properties dialog box, click the radio
button labeled Obtain an IP address automatically. Also click the
radio button labeled Obtain DNS server address automatically.
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Configuring PCs
12 Click OK twice to confirm and save your changes, and then close the
Control Panel.
5.2.3
Windows Me
First, check for the IP protocol and, if necessary, install it:
1
In the Windows task bar, click the Start button, point to Settings, and
then click Control Panel.
2
Double-click the Network and Dial-up Connections icon.
3
In the Network and Dial-up Connections window, right-click the
Network icon, and then click the Properties button.
The Network Properties dialog box is displayed with a list of currently
installed network components. If the list includes Internet Protocol
(TCP/IP), then the protocol has already been enabled. Skip to step 11.
4
If Internet Protocol (TCP/IP) does not display as an installed
component, click the Add… button.
5
In the Select Network Component Type dialog box, select Protocol,
and then click the Add… button.
6
Select Microsoft in the Manufacturers box.
7
Select Internet Protocol (TCP/IP) in the Network Protocols list, and
then click OK .
You may be prompted to install files from your Windows Me installation
CD or other media. Follow the instructions to install the files.
8
If prompted, click OK to restart your computer with new settings.
Next, configure the PC to accept IP information assigned by the HM410dp:
9
In the Control Panel, double-click the Network and Dial-up
Connections icon.
10 In Network and Dial-up Connections window, right-click the Network
icon, and then click the Properties button.
11 In the Network Properties dialog box, select TCP/IP, and then click the
Properties button.
12 In the TCP/IP Settings dialog box, click the radio button labeled Server
assigned IP address. Also click the radio button labeled Server
assigned name server address.
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Configuring PCs
13 Click OK twice to confirm and save your changes, and then close the
Control Panel.
5.2.4
Windows 95, 98
First, check for the IP protocol and, if necessary, install it:
1
In the Windows task bar, click the Start button, point to Settings and
then click Control Panel.
2
Double-click the Network icon.
The Network dialog box displays with a list of currently installed
network components. If the list includes TCP/IP, then the protocol has
already been enabled. Skip to step 9.
3
If TCP/IP does not display as an installed component, click the Add…
button. The Select Network Component Type dialog box displays.
4
Select Protocol, and then click the Add… button.
The Select Network Protocol dialog box displays.
5
Click on Microsoft in the Manufacturers list box, and then click TCP/IP
in the Network Protocols list box.
6
Click OK to return to the Network dialog box, and then click OK
again. You may be prompted to install files from your Windows 95/98
installation CD. Follow the instructions to install the files.
7
Click OK to restart the PC and complete the TCP/IP installation.
Next, configure the PC to accept IP information assigned by the HM410dp:
8
Open the Control Panel window, and then click the Network icon.
9
Select the network component labeled TCP/IP, and then click the
Properties button.
If you have multiple TCP/IP listings, select the listing associated with
your network card or adapter.
10 In the TCP/IP Properties dialog box, click the IP Address tab.
11 Click the radio button labeled Obtain an IP address automatically.
12 Click the DNS Configuration tab, and then click the radio button
labeled Obtain an IP address automatically.
13 Click OK twice to confirm and save your changes. You will be
prompted you restart Windows. Click Yes to do so.
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Configuring PCs
5.3
Assigning Static Internet Information
If you are like most users, you will not need to assign static Internet
information to your LAN PCs. Your ISP automatically assigns this
information.
In some cases however, you may want to assign Internet information to
some or all of your PCs directly (often called “statically”), rather than
allowing the HM410dp to assign it. This option may be desirable (but not
required) if:
•
You have obtained one or more public IP addresses that you want to
always associate with specific computers (for example, if you are using
a computer as a public web server).
•
You maintain different subnets on your LAN.
Before you begin, be sure to have the following information on hand, or
contact your ISP if you do not know it:
•
The IP address and subnet mask to be assigned to each PC to which
you will be assigning static IP information.
•
The IP address of the default gateway for your LAN. In most cases,
this is the address assigned to the LAN port on the HM410dp. By
default, the LAN port is assigned this IP address: 192.168.1.1.
•
The IP address of your ISP’s Domain Name System (DNS) server.
On each PC to which you want to assign static information, follow the
instructions in sections 5.2.1 through 5.2.4 relating only to checking for
and/or installing the IP protocol.
Once it is installed, continue to follow the instructions for displaying each of
the Internet Protocol (TCP/IP) properties. Instead of enabling dynamic
assignment of the IP addresses for the computer, DNS server and default
gateway, click the radio buttons that enable you to enter the information
manually.
Note:
Your PCs must have IP addresses that place them in the same
subnet as the HM410dp LAN port. If you manually assign IP
information to all your LAN PCs, you can follow the instructions in
section 4.4.3.2 – “DHCP Server Subnets” to change the LAN port
IP address accordingly.
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67
Glossary
Glossary
Authorization
The process of determining what types of
activities a user is permitted to undertake.
Usually, authorization is in the context of
authentication: once you have authenticated
a user, they may be authorized for different
types of access or activity.
Bridging
Passing data from your network to your ISP
and vice versa using the hardware addresses
of the devices at each location. Bridging
contrasts with routing, which can add more
intelligence to data transfers by using network
addresses instead.
Broadband
A telecommunications technology that can
send different types of data over the same
medium. DSL is a broadband technology.
Broadcast
To simultaneously send the same message to
multiple recipients.
DHCP - Dynamic Host Configuration
Protocol
DHCP automates address assignment and
management. When a computer connects to
the LAN, DHCP assigns it an IP address from
a shared pool of IP addresses; after a
specified time limit, DHCP returns the
address to the pool.
DNS - Domain Name System
The DNS maps domain names into IP
addresses. DNS information is distributed
hierarchically throughout the Internet among
computers called DNS servers. When you
start to access a web site, a DNS server
looks up the requested domain name to find
its corresponding IP address. If the DNS
server cannot find the IP address, it
68
communicates with higher-level DNS servers
to determine the IP address.
Domain name
A domain name is a user-friendly name used
in place of its associated IP address. Domain
names must be unique; their assignment is
controlled by the Internet Corporation for
Assigned Names and Numbers (ICANN).
Domain names are a key element of URLs,
which identify a specific file at a web site.
Download
To transfer data in the downstream direction,
i.e. from the Internet to the user.
Encapsulation
A technology that enables one network to
send its data via another network’s
connections. Encapsulation works by
encapsulating a network protocol within
packets carried by the second network.
Encapsulation is also called tunneling.
FTP - File Transfer Protocol
A program used to transfer files between
computers connected to the Internet.
Common uses include uploading new or
updated files to a web server, and
downloading files from a web server.
Host
A device (usually a computer) connected to a
network.
HTTP - Hypertext Transfer Protocol
HTTP is the main protocol used to transfer
data from web sites so that it can be
displayed by web browsers.
Hub
A hub is a place of convergence where data
arrives from one or more directions and is
forwarded out in one or more directions. It
1553-ZAT 759 94 Uen A – October 2004
Glossary
usually includes a switch of some kind. It
connects an Ethernet bridge/router to a group
of PCs on a LAN and allows communication
to pass between the networked devices.
ICMP – Internet Control Message Protocol
An Internet protocol used to report errors and
other network-related information. The ping
command makes use of ICMP.
IP address
The address of a host (computer) on the
Internet, consisting of four numbers, each
from 0 to 255, separated by periods, e.g.
192.168.1.1. An IP address consists of a
network ID that identifies the particular
network the host belongs to, and a host ID
uniquely identifying the host itself on that
network. A network mask is used to define
the network ID and the host ID. Because IP
addresses are difficult to remember, they
usually have an associated domain name that
can be specified instead.
ISP – Internet Service Provider
A company that provides access to the
Internet.
LAN – Local Area Network
A computer network limited to the immediate
area, such as a home, office, or small
building.
LED – Light Emitting Diode
A type of control lamp on devices that
indicates the status of the device.
MAC address
Short for Media Access Control address, the
permanent hardware address of a device
assigned by its manufacturer. MAC
addresses are expressed as six pairs of hex
characters (0-9 and A-f), with each pair
separated by colons. For example:
1a:2b:23:5b:66:9a
NAT - Network Address Translation
A service performed by many routers that
1553-ZAT 759 94 Uen A – October 2004
translates your network’s publicly known IP
address into a private IP address for each
computer on your LAN. Only your router and
your LAN know these addresses; the outside
world sees only the public IP address when
talking to a computer on your LAN.
Network mask
A network mask is a sequence of bits applied
to an IP address to select the network ID
while ignoring the host ID. Bits set to 1 mean
“select this bit” while bits set to 0 mean
“ignore this bit”. For example, if the network
mask 255.255.255.0 is applied to the IP
address 100.10.50.1, the network ID is
100.10.50, and the host ID is 1.
NIC – Network Interface Card
An adapter card that plugs into your computer
and provides the physical interface to your
network cabling, which for Ethernet NICs is
tyically an RJ-45 connector.
Packet
Data transmitted on a network consists of
units called packets. Each packet contains a
payload (the data), plus overhead information
such as where it came from (source address)
and where it should go (destination address).
Ping – Packet Internet (or Inter-Network)
Groper
A program used to verify whether the host
associated with an IP address is online. It can
also be used to reveal the IP address for a
given domain name.
Port
In TCP/IP and UDP networks, an endpoint to
a logical connection. The port number
identifies what type of port it is. For example,
port 80 is used for HTTP traffic.
PPP – Point-to-Point Protocol
A protocol for serial data transmission that is
used to carry IP (and other protocol) data
between your ISP and your computer. The
69
Glossary
WAN interface on the HM410dp uses a form
of PPP called PPPoE (PPP over Ethernet).
Protocol
A set of rules governing the transmission of
data. In order for a data transmission to work,
both ends of the connection have to follow the
rules of the protocol.
Routing
Forwarding data between your network and
the Internet on the most efficient route, based
on the data’s destination IP address and
current network conditions. A device that
performs routing is called a router.
Subnet
A subnet is a portion of a network. The
subnet is distinguished from the larger
network by a subnet mask that selects some
of the computers of the network and excludes
all others. The subnet’s computers remain
physically connected to the rest of the parent
network, but they are treated as though they
were on a separate network.
Subnet mask
A mask that defines a subnet. See also
Network mask.
TCP – Transmission Control Protocol
See TCP/IP.
TCP/IP – Transmission Control Protocol /
Internet Protocol
The basic protocols used on the Internet.
TCP is responsible for dividing data up into
packets for delivery and reassembling them
at the destination, while IP is responsible for
delivering the packets from source to
destination. When TCP and IP are bundled
with higher-level applications such as HTTP,
FTP, Telnet, etc., TCP/IP refers to this whole
suite of protocols.
Telnet
An interactive, character-based program used
to access a remote computer. While HTTP
70
and FTP only allow you to download files
from a remote computer, Telnet allows you to
log into and use a computer from a remote
location.
Triggers
Triggers are used to deal with application
protocols that create separate sessions.
Some applications, such as NetMeeting, open
secondary connections during normal
operations, for example, a connection to a
server is established using one port, but data
transfers are performed on a separate
connection. A trigger tells the device to
expect these secondary sessions and how to
handle them.
UDP – User Datagram Protocol
A connectionless transport service that
dispenses with the reliability services
provided by the TCP. UDP gives applications
a direct interface with IP and the ability to
address a particular application process
running on a host via a port number, without
setting up a connection session.
UPnP – Universal Plug and Play
A networking architecture that provides
compatibility among networking equipment.
UPnP boasts device-driver independence and
zero-configuration networking.
Upstream
The direction of data transmission from the
user to the Internet.
Virtual Server
A server, usually a Web server, that shares
computer resources with other virtual servers.
In this context, the virtual part simply means
that it is not a dedicated server – that is, the
entire computer is not dedicated to running
the server software. Instead of requiring a
separate computer for each server, dozens of
virtual servers can co-reside on the same
computer.
1553-ZAT 759 94 Uen A – October 2004
Glossary
VPI and VCI
A VPI (Virtual Path Identifier) is an 8-bit field
while VCI (Virtual Channel Identifier) is a 16bit field in the ATM cell header. A VPI
identifies a link formed by a virtual path and a
VCI identifies a channel w ithin a virtual path.
In this way, the cells belonging to the same
connection can be distinguished. A unique
and separate VPI/VCI identifier is assigned in
advance to indicate which type of cells follow.
WAN – Wide Area Network
Any network spread over a large
geographical area, such as a country or
continent. With respect to the HM410dp,
WAN refers to the Internet.
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71
Glossary
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1553-ZAT 759 94 Uen A – October 2004
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1553-ZAT 759 94 Uen A – October 2004