Sercomm AP51GA Wireless Internet Access Server Applicance User Manual AP51GA
Sercomm Corporation Wireless Internet Access Server Applicance AP51GA
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UserMan
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| Document Description | UserMan |
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| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
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| Date Submitted | 2004-03-19 00:00:00 |
| Date Available | 2004-03-19 00:00:00 |
| Creation Date | 2004-02-25 10:15:21 |
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| Document Lastmod | 2004-02-26 14:32:40 |
| Document Title | AP51GA.DOC |
| Document Creator | AP51GA.DOC - Microsoft Word |
| Document Author: | Larry_Chuang |
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION.............................................................................................. 1
Features of your Wireless Access Point ........................................................................... 1
Package Contents............................................................................................................... 3
Physical Details .................................................................................................................. 3
CHAPTER 2 INSTALLATION ............................................................................................... 5
Requirements ..................................................................................................................... 5
Procedure ........................................................................................................................... 5
CHAPTER 3 ACCESS POINT SETUP................................................................................... 7
Overview ............................................................................................................................ 7
Setup using the Windows Utility ...................................................................................... 7
Setup using a Web Browser.............................................................................................. 9
System Screen .................................................................................................................. 12
Access Control Screen ..................................................................................................... 14
2.4GHz Wireless Screens ................................................................................................ 17
Basic Settings Screen....................................................................................................... 17
Security Settings .............................................................................................................. 19
Advanced Settings ........................................................................................................... 25
CHAPTER 4 PC AND SERVER CONFIGURATION ........................................................ 27
Overview .......................................................................................................................... 27
Using WEP ....................................................................................................................... 27
Using WPA-PSK............................................................................ 錯誤! 尚未定義書籤。
802.1x Mode - Overview ............................................................... 錯誤! 尚未定義書籤。
802.1x Server Setup (Windows 2000 Server) ................................................................ 29
802.1x Client Setup on Windows XP.............................................................................. 39
CHAPTER 5 OPERATION AND STATUS ......................................................................... 46
Operation ......................................................................................................................... 46
Status Screen.................................................................................................................... 46
CHAPTER 6 OTHER SETTINGS & FEATURES .............................................................. 51
Overview .......................................................................................................................... 51
Admin Login Screen ........................................................................................................ 51
Config File ........................................................................................................................ 53
Firmware Upgrade .......................................................................................................... 54
APPENDIX A SPECIFICATIONS........................................................................................ 55
Wireless Access Point ...................................................................................................... 55
APPENDIX B TROUBLESHOOTING................................................................................. 59
Overview .......................................................................................................................... 59
General Problems ............................................................................................................ 59
APPENDIX C WINDOWS TCP/IP ....................................................................................... 61
Overview .......................................................................................................................... 61
Checking TCP/IP Settings - Windows 9x/ME: ............................................................. 61
Checking TCP/IP Settings - Windows NT4.0................................................................ 63
Checking TCP/IP Settings - Windows 2000 .................................................................. 66
Checking TCP/IP Settings - Windows XP ..................................................................... 68
Wireless LANs ................................................................................................................. 69
P/N: 9560N90001
Copyright 2004. All Rights Reserved.
Document Version: 1.1
All trademarks and trade names are the properties of their respective owners.
ii
Chapter 1
Introduction
This Chapter provides an overview of the Wireless Access Point's features and
capabilities.
Congratulations on the purchase of your new Wireless Access Point. The Wireless Access
Point links your 802.11g or 802.11b Wireless Stations to your wired LAN. The Wireless
stations and devices on the wired LAN are then on the same network, and can communicate
with each other without regard for whether they are connected to the network via a Wireless or
wired connection.
Figure 1: Wireless Access Point
The auto-sensing capability of the Wireless Access Point allows packet transmission up to
54Mbps for maximum throughput, or automatic speed reduction to lower speeds when the
environment does not permit maximum throughput.
Features of your Wireless Access Point
The Wireless Access Point incorporates many advanced features, carefully designed to provide
sophisticated functions while being easy to use.
•
Standards Compliant. The Wireless Router complies with the IEEE802.11g (DSSS)
specifications for Wireless LANs.
•
Supports both 802.11b and 802.11g Wireless Stations. The 802.11g standard
provides for backward compatibility with the 802.11b standard, so both 802.11b and
802.11g Wireless stations can be used simultaneously.
•
802.1x Support. Support for 802.1x mode is included, providing for the industrialstrength wireless security of 802.1x authentication and authorization.
•
Radius Client Support. The Wireless Access Point can login to your existing Radius
Server (as a Radius client).
Wireless Access Point User Guide
•
Dynamic WEP key Support. In 802.1x mode, either fixed or Dynamic WEP keys can be
used.
•
Upgradeable Firmware. Firmware is stored in a flash memory and can be upgraded
easily, using only your Web Browser.
•
WEP support. Support for WEP (Wired Equivalent Privacy) is included. Both 64 Bit
and 128 Bit keys are supported.
•
WPA support. Support for WPA is included. WPA is more secure than WEP, and should
be used if possible.
•
Access Control. The Access Control feature can ensure that only trusted Wireless
Stations can use the Wireless Access Point to gain access to your LAN.
•
Simple Configuration. If the default settings are unsuitable, they can be changed
quickly and easily.
•
DHCP Client Support. Dynamic Host Configuration Protocol provides a dynamic IP
address to PCs and other devices upon request. The Wireless Access Point can act as a
DHCP Client, and obtain an IP address and related information from your existing DHPC
Server.
•
NetBIOS & WINS Support. Support for both NetBIOS broadcast and WINS (Windows Internet Naming Service) allows the Wireless Access Point to easily fit into your
existing Windows network.
•
Password - protected Configuration. Optional password protection is provided to
prevent unauthorized users from modifying the configuration data and settings.
Introduction
Package Contents
The following items should be included:
•
Wireless Access Point
•
Power Adapter
•
Quick Start Guide
•
CD-ROM containing the on-line manual
If any of the above items are damaged or missing, please contact your dealer immediately.
Physical Details
Front Panel LEDs
Figure 2: Front Panel
Status
On - Error condition.
Off - Normal operation.
Blinking - During start up, and when the Firmware is being upgraded.
Power
On - Normal operation.
Off - No power
LAN
On - The LAN (Ethernet) port is active.
Off - No active connection on the LAN (Ethernet) port.
Flashing - Data is being transmitted or received via the corresponding
LAN (Ethernet) port.
Wireless LAN
On - Idle
Off - Error- Wireless connection is not available.
Flashing - Data is being transmitted or received via the Wireless access
point. Data includes "network traffic" as well as user data.
Wireless Access Point User Guide
Rear Panel
Figure 3 Rear Panel
Antenna
One antenna (aerial) is supplied. Best results are usually obtained with
the antenna in a vertical position.
Console port
DB9 female RS232 port.
Reset Button
This button has two (2) functions:
•
Reboot. When pressed and released, the Wireless Access Point
will reboot (restart).
•
Reset to Factory Defaults. This button can also be used to clear
ALL data and restore ALL settings to the factory default values.
To Clear All Data and restore the factory default values:
1. Power Off the Access Point
2. Hold the Reset Button down while you Power On the Access
Point.
3. Continue holding the Reset Button until the Status (Red) LED
blinks TWICE.
4. Release the Reset Button.
The factory default configuration has now been restored, and the
Access Point is ready for use.
Ethernet
Use a standard LAN cable (RJ45 connectors) to connect this port to a
10BaseT or 100BaseT hub on your LAN.
Power port
Connect the supplied power adapter here.
Chapter 2
Installation
This Chapter covers the physical installation of the Wireless Access Point.
Requirements
Requirements:
•
TCP/IP network
•
Ethernet cable with RJ-45 connectors
•
Installed Wireless network adapter for each PC that will be wirelessly connected to the
network
Procedure
1.
Select a suitable location for the installation of your Wireless Access Point. To maximize
reliability and performance, follow these guidelines:
•
Use an elevated location, such as wall mounted or on the top of a cubicle.
•
Place the Wireless Access Point near the center of your wireless coverage area.
•
If possible, ensure there are no thick walls or metal shielding between the Wireless
Access Point and Wireless stations. Under ideal conditions, the Wireless Access Point
has a range of around 150 meters (450 feet). The range is reduced, and transmission
speed is lower, if there are any obstructions between Wireless devices.
Figure 4: Installation Diagram
Wireless Access Point User Guide
2.
3.
4.
Use a standard LAN cable to connect the “Ethernet” port on the Wireless Access Point to a
10/100BaseT hub on your LAN.
Connect the supplied power adapter to the Wireless Access Point and a convenient power
outlet, and power up.
Check the LEDs:
•
The Status LED should flash, then turn OFF.
•
The Power, WLAN, and LAN LED should be ON.
For more information, refer to Front Panel LEDs in Chapter 1.
Chapter 3
Access Point Setup
This Chapter provides details of the Setup process for Basic Operation of
your Wireless Access Point.
Overview
This chapter describes the setup procedure to make the Wireless Access Point a valid device on
your LAN, and to function as an Access Point for your Wireless Stations.
Wireless Stations may also require configuration. For details, see Chapter 4 - Wireless Station
Configuration.
The Wireless Access Point can be configured using either the supplied Windows utility or your
Web Browser
Setup using the Windows Utility
A simple Windows setup utility is supplied on the CD-ROM. This utility can be used to assign
a suitable IP address to the Wireless Access Point. Using this utility is recommended, because it
can locate the Wireless Access Point even if it has an invalid IP address.
Installation
1.
2.
3.
Insert the supplied CD-ROM in your drive.
Run the SETUP.exe program in the root folder.
Follow the prompts to complete the installation.
Main Screen
•
Start the program by using the icon created by the setup program.
•
When run, the program searches the network for all active Wireless Access Points, then
lists them on screen, as shown by the example below.
Figure 5: Management utility Screen
Wireless Access Point User Guide
Wireless Access Points
On the center of the screen is a list of all Wireless Access Points found on the network. For
each device, the following data is shown:
•
Server Name. The Server Name is shown on a sticker on the base of the device.
•
IP. The IP address for the Wireless Access Point.
•
MAC. The hardware or physical address of the Wireless Access Point.
•
SSID. The SSID setting for the Wireless Access Point. (The SSID is case sensitive.)
•
Channel. The current channel used by the Wireless Access Point.
•
Version. The current version number for the Wireless Access Point.
•
Description. Any extra information for the Wireless Access Point.
Note: If the desired Wireless Access Point is not listed, check that the device is installed and
ON, then Refresh the list.
Buttons
•
Refresh. Click this button to update the Wireless Access Point device listing after changing the name or IP Address.
•
Web Management. You can use this button to connect the Wireless Access Point to do
some setup using web browser.
•
Set IP Address. Click this button if you want to change the IP Address of the device.
•
Exit. Exit the Management utility program by clicking this button.
Setup Procedure
1.
2.
3.
4.
5.
6.
7.
Select the desired Wireless Access Point.
Click the Set IP Address button.
If prompted, enter the user name and password. The default values are admin for the User
Name, and a blank Password
Ensure the IP address, Network Mask, and Gateway are correct for your LAN. Save any
changes.
Click the Web Management button to connect to the selected Wireless Access Point using
your Web Browser. If prompted, enter the User Name and Password again.
Configure the following screens, using the on-line help if necessary.
The following section also provides more details about each of these screens.
•
Wireless
•
Security
• Password
Setup is now complete.
Setup
Setup using a Web Browser
Your Browser must support JavaScript. The configuration program has been tested on the
following browsers:
•
Netscape V4.08 or later
•
Internet Explorer V4 or later
Setup Procedure
Before commencing, install the Wireless Access Point in your LAN, as described previously.
1.
Check the Wireless Access Point to determine its Default Name. This is shown on a label
on the base or rear, and is in the following format:
SCxxxxxx
Where xxxxxx is a set of 6 Hex characters ( 0 ~ 9, and A ~ F ).
2.
Use a PC which is already connected to your LAN, either by a wired connection or another
Access Point.
•
Until the Wireless Access Point is configured, establishing a Wireless connection to it
may be not possible.
•
3.
4.
5.
If your LAN contains a Router or Routers, ensure the PC used for configuration is on
the same LAN segment as the Wireless Access Point.
Start your Web browser.
In the Address box, enter "HTTP://" and the Default Name of the Wireless Access Point
e.g.
HTTP://SC2D631A
You should then see a login prompt, which will ask for a User Name and Password.
Enter admin for the User Name, and password for the Password.
These are the default values. The password (but not the user name) can and should be
changed. Always enter the current password, as set on the Admin Login screen.
Figure 6: Password Dialog
6.
You will then see the Status screen, which displays the current settings and status. No data
input is possible on this screen.
Wireless Access Point User Guide
7.
From the menu, select and configure the following options, as described in the following
sections:
•
System
•
Access Control
•
2.4GHz Wireless
•
8.
•
Basic
•
Security
•
Advanced
Management
Setup of the Wireless Access Point is now complete.
Wireless stations must now be set to match the Wireless Access Point. See Chapter 4 for
details.
If you can't connect:
It is likely that your PC’s IP address is incompatible with the Wireless Access
Point’s IP address. This can happen if your LAN does not have a DHCP Server.
The default IP address of the Wireless Access Point is 192.168.0.100, with a
Network Mask of 255.255.255.0.
If your PC’s IP address is not compatible with this, you must change your PC’s IP
address to an unused value in the range 192.168.0.1 ~ 192.168.0.254, with a Network Mask of 255.255.255.0. See Appendix C - Windows TCP/IP for details for
this procedure.
10
Setup
Status Screen
When you first connect, you will see the Status screen. This displays the current settings and
status of the Wireless Access Point. No data can be input on this screen.
Figure 7: Status Screen
For further details of this screen, refer to Status Screen in Chapter 5.
11
Wireless Access Point User Guide
System Screen
Click System on the menu to view a screen like the following.
Figure 8: System Screen
Data - System Screen
Identification
Access Point
Name
Enter a suitable name for this Access Point.
Description
If desired, you can enter a description for the Access Point.
Country Domain
Select the country or domain matching your current location.
MAC Address
The read-only field shows the current MAC Address.
IP Address
DHCP Client
Fixed
Select this option if you have a DHCP Server on your LAN, and you
wish the Access Point to obtain an IP address automatically.
If selected, the following data must be entered.
•
IP Address - The IP Address of this device. Enter an unused IP
address from the address range on your LAN.
•
Subnet Mask - The Network Mask associated with the IP Address
above. Enter the value used by other devices on your LAN.
•
Gateway - The IP Address of your Gateway or Router. Enter the
value used by other devices on your LAN.
•
DNS - Enter the DNS (Domain Name Server) used by PCs on your
LAN.
12
Setup
WINS
Enable WINS
If your LAN has a WINS server, you can enable this to have this AP
register with the WINS server.
WINS Server
Name/IP Address
Enter the name or IP address of your WINS server.
Telnet
Enable Telnet
Management
If desired, you can enable this option. If enabled, you will able to
connect to this AP using a Telnet client. You will have to provide the
same login data (user name, password) as for a HTTP (Web) connection.
13
Wireless Access Point User Guide
Access Control Screen
This feature can be used to block access to your LAN by unknown or untrusted wireless stations.
Click Access Control on the menu to view a screen like the following.
Figure 9: Access Control Screen
Data - Access Control Screen
Enable
Use this checkbox to Enable or Disable this feature as desired.
Warning ! Ensure you own PC is in the "Trusted Wireless Stations"
list before enabling this feature..
Trusted Stations
This table lists any Wireless Stations you have designated as "Trusted".
If you have not added any stations, this table will be empty. For each
Wireless station, the following data is displayed:
•
MAC Address - the MAC or physical address of each Wireless station.
•
Connected - this indicates whether or not the Wireless station
is currently associates with this Access Point.
Buttons
Modify List
To change the list of Trusted Stations (Add, Edit, or Delete a Wireless
Station or Stations), click this button.
Read from File
To upload a list of Trusted Stations from a file on your PC, click this
button.
Write to File
To download the current list of Trusted Stations from the Access Point
to a file on your PC, click this button.
14
Setup
Trusted Wireless Stations
This feature can be used to block access to your LAN by unknown or untrusted wireless stations., use the Modify List button on the Access Control screen. You will see a screen like the
sample below.
Figure 10: Trusted Wireless Stations
Data - Trusted Wireless Stations
Trusted Wireless
Stations
This lists any Wireless Stations which you have designated as
“Trusted”.
Other Wireless
Stations
This list any Wireless Stations detected by the Access Point, which
you have not designated as "Trusted".
Address
Used when adding or editing a Trusted Station, to display or enter
the address (MAC or physical address) of the Wireless station.
Buttons
<<
Used to add Wireless stations to the Trusted Wireless Station list.
Select the desired Station or Stations in the Other Wireless Stations
list, then click this button.
>>
Used to delete Wireless stations from the Trusted Wireless Station
list.
Select the desired Station or Stations in the Trusted Wireless Stations list, then click this button.
Edit
Used to edit an existing Wireless Station:
1. Select a station in the Trusted Wireless Stations list
2. Click the Edit button. The data from the selected station is
copied to the Address field, and the Add button changes to Update.
3. Edit the address as required.
4. Click the Update button to save your changes, or Clear if you
do not wish to save.
15
Wireless Access Point User Guide
Add
To add a Trusted Station which is not in the "Other Wireless Stations" list, enter the required data and click this button.
Clear
Clear the Address field.
If editing, this also cancels the edit and changes the Update button
back to Add.
16
Setup
2.4GHz Wireless Screens
There are 3 configuration screens available:
•
Basic
•
Security
•
Advanced
Basic Settings Screen
The settings on this screen must match the settings used by Wireless Stations.
Click Basic on the menu to view a screen like the following.
Figure 11: Basic Settings Screen
Data - Basic Settings Screen
Operation
Wireless Mode
Select the desired option:
•
Disable - select this if for some reason you do not this AP to
transmit or receive at all.
•
802.11b and 802.11g - this is the default, and will allow connections by both 802.11b and 802.1g wireless stations.
•
802.11b - if selected, only 802.11b connections are allowed.
802.11g wireless stations will only be able to connect if they are
fully backward-compatible with the 802.11b standard.
•
802.11g - only 802.11g connections are allowed. If you only have
802.11g, selecting this option may provide a performance improvement over using the default setting.
•
Super 802.11g (108Mbps) - select this only if all wireless stations
support this mode.
•
Dynamic Super 802.11g (108Mbps) - select this only if all
wireless stations support this mode.
•
Static Super 802.11g (108Mbps) - select this only if all wireless
stations support this mode.
17
Wireless Access Point User Guide
Operating Mode
Select the desired mode:
•
Wireless Access Point - operate as a normal Access Point
•
Client Access Point - act as a client for another Access Point. If
selected, you must provide the address (MAC address) of the other
Access Point (Remote AP).
•
Repeater Access Point - act as a repeater for another Access
Point. If selected, you must provide the address (MAC address) of
the other Access Point (Remote AP).
Remote AP
MAC Address
This is not required unless the Operating Mode is "Client Access Point"
or "Repeater Access Point". In either of these modes, you must provide
the MAC address of the other AP in this field. You can either enter the
MAC address directly, or, if the other AP is on-line, you can click the
"Select AP" button and select from a list of available APs.
Channel No
If "Automatic" is selected, the Wireless Access Point will self-select a
Wireless Channel.
If you experience interference (shown by lost connections and/or slow
data transfers) you may need to experiment with different channels to
see which Channel is the best.
Current Channel
No.
This displays the current channel used by the Access Point.
SSID
Enter the desired SSID. Wireless Stations must use the same SSID.
Note: The SSID is case sensitive.
Broadcast SSID
If Enabled, the SSID will be broadcast to all Wireless Stations. Stations
which have no SSID (or a "null" value) can then adopt the correct SSID
for connections to this Access Point.
18
Setup
Security Settings
The Security screen is accessed from the main menu, and it provides 5 options as below:
•
None
•
WEP
•
WPA-PSK
•
WPA-802.1x
•
802.1X
Security Settings - None
If "None" is selected, no security is used, and there are no settings to configure.
Security Settings - WEP
Selecting the WEP option will result in a screen like the following.
Figure 12: WEP Settings
Data - WEP Screen
WEP
Data
Encryption
Select the desired option:
•
64 Bit Encryption - Keys are 10 Hex (5 ASCII) characters.
•
128 Bit Encryption - Keys are 26 Hex (13 ASCII) characters.
19
Wireless Access Point User Guide
Authentication
Normally, you can leave this at “Automatic”, so that Wireless
Stations can use either method ("Open System" or "Shared
Key".).
If you wish to use a particular method, select the appropriate
value - "Open System" or "Shared Key". All Wireless stations
must then be set to use the same method.
Key Input
Select "Hex" or "ASCII" depending on your input method. (All
keys are converted to Hex, ASCII input is only for convenience.)
Key 1.. Key 4
Enter the key value you wish to use. Other stations must have
the same key.
Passphrase
Use this to generate a key or keys, instead of entering them
directly. Enter a word or group of printable characters in the
Passphrase box and click the "Generate Key" button to automatically configure the WEP Key(s). If encryption strength is
set to 64 bit, then each of the four key fields will be populated
with key values. If encryption strength is set to 128 bit, then
only the selected WEP key field will be given a key value.
Security Settings - WPA-PSK
Selecting the WPA-PSK option will result in a screen like the following.
Figure 13: WPA-PSK Settings
Data - WPA-PSK Screen
WPA-PSK
Network Key
Enter the key value. Data is encrypted using this key. Other
Wireless Stations must use the same key.
WPA Encryption
Select the desired option. Other Wireless Stations must use the
same method.
20
Setup
Pairwise Key Update
This refers to the key used for point-to-point transmissions.
Enable this if you want the keys to be updated regularly.
Key Lifetime
This field determines how often Pairwise keys are dynamically
updated. Enter the desired value.
Group Key Update
This refers to the key used for broadcast transmissions. Enable
this if you want the keys to be updated regularly.
Key Lifetime
This field determines how often the Group key is dynamically
updated. Enter the desired value.
Group key update
when any membership
terminated
If enabled, the Group key will be updated whenever any member
leaves the group or disassociates from the Access Point.
Security Settings - WPA-802.1x
This version of WPA requires that you have a Radius Server on your LAN.
Selecting the WPA-802.1x option will result in a screen like the following.
Figure 14: WPA-802.1x Settings
Data - WPA-802.1x Screen
WPA-802.1x
Radius Server
Enter the name or IP address of the Radius Server on your network.
Radius Port
Enter the port number used for connections to the Radius Server.
21
Wireless Access Point User Guide
Client Login Name
This read-only field displays the current login name, which is the
same as the name of the Access Point. The Radius Server must be
configured to accept this login.
Shared Key
This is used for the Client Login on the Radius Server. Enter the key
value to match the Radius Server.
WPA Encryption
Select the desired option. Other Wireless Stations must use the same
method.
•
TKIP - Unicast (point-to-point) transmissions are encrypted using TKIP, and multicast (broadcast)
transmissions are not encrypted.
•
TKIP + 64 bit WEP - Unicast (point-to-point) transmissions are encrypted using TKIP, and multicast (broadcast)
transmissions are encrypted using 64 bit WEP.
•
TKIP + 128 bit WEP - - Unicast (point-to-point) transmissions are encrypted using TKIP, and multicast (broadcast)
transmissions are encrypted using 128 bit WEP.
Pairwise Key Update
This refers to the key used for point-to-point transmissions. Enable
this if you want the keys to be updated regularly.
Key Lifetime
This field determines how often Pairwise keys are dynamically
updated. Enter the desired value.
Group Key Update
This refers to the key used for broadcast transmissions. Enable this
if you want the keys to be updated regularly.
Key Lifetime
This field determines how often the Group key is dynamically
updated. Enter the desired value.
Group key update
when any membership terminated
If enabled, the Group key will be updated whenever any member
leaves the group or disassociates from the Access Point.
Radius Accounting
Enable this if you want this Access Point to send accounting data to
the Radius Server.
If enabled, the port used by your Radius Server must be entered in
the Radius Accounting Port" field.
Update Report
every ...
If Radius accounting is enabled, you can enable this and enter the
desired update interval. This Access Point will then send updates
according to the specified time period.
22
Setup
Security Settings - 802.1x
802.1x can only be used if you have a Radius Server on your LAN.
Selecting the 802.1x option will result in a screen like the following.
Figure 15: 802.1x Settings
Data - 802.1x Screen
802.1x
Radius Server Address
Enter the name or IP address of the Radius Server on your
network.
Radius Port
Enter the port number used for connections to the Radius
Server.
Client Login Name
This read-only field displays the current login name, which is
the same as the name of the Access Point. The Radius Server
must be configured to accept this login.
Shared Key
This is used for the Client Login on the Radius Server. Enter the
key value to match the Radius Server.
WEP Key Size
Select the desired option:
•
64 Bit Encryption - Keys are 10 Hex (5 ASCII) characters.
•
128 Bit Encryption - Keys are 26 Hex (13 ASCII)
characters.
Key Exchange
Enable this if you want the keys to be updated regularly.
Key Lifetime
This field determines how often keys are dynamically
updated. Enter the desired value.
23
Wireless Access Point User Guide
Radius Accounting
Enable this if you want this Access Point to send accounting
data to the Radius Server.
If enabled, the port used by your Radius Server must be entered
in the Radius Accounting Port" field.
Update Report every ...
If Radius accounting is enabled, you can enable this and enter
the desired update interval. This Access Point will then send
updates according to the specified time period.
24
Setup
Advanced Settings
Click the Advanced link on the menu will result in a screen like the following.
Figure 16: Advanced Settings
Data - Advanced Settings Screen
Basic Rate
Basic Rate Selection
Wireless Separation
The Basic Rate is used for broadcasting. It does not determine
the data transmission rate, which is determined by the "Mode"
setting on the Basic screen.
Select the desired option:
•
Auto-negotiate - This is the default, and will normally give
the best results.
•
Fixed Rate - If you don't use to use "Auto-negotiate", you
must also select the desired speeds.
If enabled, then each Wireless station using the Access Point is
invisible to other Wireless stations. In most business situations,
this setting should be Disabled.
Parameters
Disassociated Timeout
This determines how quickly a Wireless Station will be considered "Disassociated" with this AP, when no traffic is received.
Enter the desired time period.
Fragmentation
Enter the preferred setting between 256 and 2346.
Beacon Interval
Enter the preferred setting between 0 and 3000.
25
Wireless Access Point User Guide
RTS/CTS Threshold
Enter the preferred setting between 256 and 2346.
Output Power Level
Select the desired power output. Higher levels will give a greater
range, but are also more likely to cause interference with other
devices.
Preamble Type
Select the desired preamble type.
Antenna Selection
If your Access Point has only 1 antenna, there is only 1 option
available. If your Access Point has 2 antennae, select the option
which gives the best results in your location.
802.11b
Protection Type
Select the desired option.
Short Slot Time
Enable or disable this setting as required.
Protection Mode
Normally, this should be left at "Auto".
Protection Rate
Select the desired option.
26
Chapter 4
PC and Server Configuration
This Chapter details the PC Configuration required for each PC on the local
LAN.
Overview
All Wireless Stations need to have settings which match the Wireless Access Point. These
settings depend on the mode in which the Access Point is being used.
•
If using WEP or WPA-PSK, it is only necessary to ensure that each Wireless station's
settings match those of the Wireless Access Point, as described below.
•
For WPA-802.1x and 802.1x modes, configuration is much more complex. The Radius
Server must be configured correctly, and setup of each Wireless station is also more complex.
Using WEP
For each of the following items, each Wireless Station must have the same settings as the
Wireless Access Point.
Mode
On each PC, the mode must be set to Infrastructure.
SSID (ESSID)
This must match the value used on the Wireless Access Point.
The default value is default
Note! The SSID is case sensitive.
Wireless
Security
•
Each Wireless station must be set to use WEP data encryption.
•
The Key size (64 bit or 128 bit) must be set to match the Access
Point.
•
The keys values on the PC must match the key values on the Access
Point.
Note:
On some systems, the "64 bit" key is shown as "40 bit" and "128 bit" is
shown as "104 bit". This difference arises because the key input by the
user is 24 bits less than the key size used for encryption.
27
Wireless Access Point User Guide
Using WPA-802.1x
This is the most secure and most complex system.
802.1x mode provides greater security and centralized management, but it is more complex to
configure.
Wireless Station Configuration
For each of the following items, each Wireless Station must have the same settings as the
Wireless Access Point.
Mode
On each PC, the mode must be set to Infrastructure.
SSID (ESSID)
This must match the value used on the Wireless Access Point.
The default value is default
Note! The SSID is case sensitive.
802.1x
Authentication
Each client must obtain a Certificate which is used for authentication for
the Radius Server.
802.1x
Encryption
Typically, EAP-TLS is used. This is a dynamic key system, so keys do
NOT have to be entered on each Wireless station.
Radius Server Configuration
If using WPA-802.1x mode, the Radius Server on your network must be configured as follow:
•
It must provide and accept Certificates for user authentication.
•
There must be a Client Login for the Wireless Access Point itself.
•
•
The Wireless Access Point will use its Default Name as its Client Login name.
•
The Shared Key, set on the Security Screen of the Access Point, must match the
Shared Secret value on the Radius Server.
Encryption settings must be correct.
28
PC and Server Configuration
802.1x Server Setup (Windows 2000 Server)
This section describes using Microsoft Internet Authentication Server as the Radius Server,
since it is the most common Radius Server available that supports the EAP-TLS authentication
method.
The following services on the Windows 2000 Domain Controller (PDC) are also required:
•
dhcpd
•
dns
•
rras
•
webserver (IIS)
•
Radius Server (Internet Authentication Service)
•
Certificate Authority
Windows 2000 Domain Controller Setup
1.
2.
Run dcpromo.exe from the command prompt.
Follow all of the default prompts, ensure that DNS is installed and enabled during installation.
Services Installation
1.
2.
3.
Select the Control Panel - Add/Remove Programs.
Click Add/Remove Windows Components from the left side.
Ensure that the following components are activated (selected):
•
Certificate Services. After enabling this, you will see a warning that the computer
cannot be renamed and joined after installing certificate services. Select Yes to select
certificate services and continue
•
World Wide Web Server. Select World Wide Web Server on the Internet Information
Services (IIS) component.
•
From the Networking Services category, select Dynamic Host Configuration Protocol
(DHCP), and Internet Authentication Service (DNS should already be selected and installed).
29
Wireless Access Point User Guide
Figure 17: Components Screen
4.
5.
Click Next.
Select the Enterprise root CA, and click Next.
Figure 18: Certification Screen
6.
Enter the information for the Certificate Authority, and click Next.
30
PC and Server Configuration
Figure 19: CA Screen
7.
8.
Click Next if you don't want to change the CA's configuration data.
Installation will warn you that Internet Information Services are running, and must be
stopped before continuing. Click Ok, then Finish.
DHCP server configuration
1.
2.
Click on the Start - Programs - Administrative Tools - DHCP
Right-click on the server entry as shown, and select New Scope.
Figure 20: DHCP Screen
3.
4.
5.
Click Next when the New Scope Wizard Begins.
Enter the name and description for the scope, click Next.
Define the IP address range. Change the subnet mask if necessary. Click Next.
31
Wireless Access Point User Guide
Figure 21:IP Address Screen
6.
Add exclusions in the address fields if required. If no exclusions are required, leave it
blank. Click Next.
7. Change the Lease Duration time if preferred. Click Next.
8. Select Yes, I want to configure these options now, and click Next.
9. Enter the router address for the current subnet. The router address may be left blank if
there is no router. Click Next.
10. For the Parent domain, enter the domain you specified for the domain controller setup, and
enter the server's address for the IP address. Click Next.
Figure 22: DNS Screen
11. If you don't want a WINS server, just click Next.
12. Select Yes, I want to activate this scope now. Click Next, then Finish.
13. Right-click on the server, and select Authorize. It may take a few minutes to complete.
32
PC and Server Configuration
Certificate Authority Setup
1.
2.
Select Start - Programs - Administrative Tools - Certification Authority.
Right-click Policy Settings, and select New - Certificate to Issue.
Figure 23: Certificate Authority Screen
3.
Select Authenticated Session and Smartcard Logon (select more than one by holding down
the Ctrl key). Click OK.
Figure 24: Template Screen
4.
5.
Select Start - Programs - Administrative Tools - Active Directory Users and Computers.
Right-click on your active directory domain, and select Properties.
33
Wireless Access Point User Guide
Figure 25: Active Directory Screen
6.
Select the Group Policy tab, choose Default Domain Policy then click Edit.
Figure 26: Group Policy Tab
7.
Select Computer Configuration - Windows Settings - Security Settings - Public Key Policies, right-click Automatic Certificate Request Settings - New - Automatic Certificate
Request.
34
PC and Server Configuration
Figure 27: Group Policy Screen
8.
9.
When the Certificate Request Wizard appears, click Next.
Select Computer, then click Next.
Figure 28: Certificate Template Screen
10. Ensure that your certificate authority is checked, then click Next.
11. Review the policy change information and click Finish.
12. Click Start - Run, type cmd and press enter.
Enter secedit /refreshpolicy machine_policy
This command may take a few minutes to take effect.
35
Wireless Access Point User Guide
Internet Authentication Service (Radius) Setup
1.
2.
Select Start - Programs - Administrative Tools - Internet Authentication Service
Right-click on Clients, and select New Client.
Figure 29: Service Screen
3.
4.
5.
6.
7.
8.
Enter a name for the access point, click Next.
Enter the address or name of the Wireless Access Point, and set the shared secret, as
entered on the Security Settings of the Wireless Access Point.
Click Finish.
Right-click on Remote Access Policies, select New Remote Access Policy.
Assuming you are using EAP-TLS, name the policy eap-tls, and click Next.
Click Add...
If you don't want to set any restrictions and a condition is required, select Day-And-TimeRestrictions, and click Add...
Figure 30: Attribute Screen
9. Click Permitted, then OK. Select Next.
10. Select Grant remote access permission. Click Next.
36
PC and Server Configuration
11. Click Edit Profile... and select the Authentication tab. Enable Extensible Authentication
Protocol, and select Smart Card or other Certificate. Deselect other authentication methods listed. Click OK.
Figure 31: Authentication Screen
12. Select No if you don't want to view the help for EAP. Click Finish.
37
Wireless Access Point User Guide
Remote Access Login for Users
1.
2.
3.
Select Start - Programs - Administrative Tools- Active Directory Users and Computers.
Double click on the user who you want to enable.
Select the Dial-in tab, and enable Allow access. Click OK.
Figure 32: Dial-in Screen
38
PC and Server Configuration
802.1x Client Setup on Windows XP
Windows XP ships with a complete 802.1x client implementation. If using Windows 2000, you
can install SP3 (Service Pack 3) to gain the same functionality.
If you don't have either of these systems, you must use the 802.1x client software provided with
your wireless adapter. Refer to your vendor's documentation for setup instructions.
The following instructions assume that:
•
You are using Windows XP
•
You are connecting to a Windows 2000 server for authentication.
•
You already have a login (User name and password) on the Windows 2000 server.
Client Certificate Setup
1. Connect to a network which doesn't require port authentication.
2. Start your Web Browser. In the Address box, enter the IP address of the Windows 2000
Server, followed by /certsrv
e.g
http://192.168.0.2/certsrv
3.
You will be prompted for a user name and password. Enter the User name and Password
assigned to you by your network administrator, and click OK.
Figure 33: Connect Screen
4.
On the first screen (below), select Request a certificate, click Next.
39
Wireless Access Point User Guide
Figure 34: Wireless CA Screen
5.
Select User certificate request and select User Certificate, the click Next.
Figure 35: Request Type Screen
6.
Click Submit.
40
PC and Server Configuration
Figure 36: Identifying Information Screen
7.
A message will be displayed, then the certificate will be returned to you.
Click Install this certificate.
Figure 37:Certificate Issued Screen
8.
. You will receive a confirmation message. Click Yes.
41
Wireless Access Point User Guide
Figure 38: Root Certificate Screen
9.
Certificate setup is now complete.
802.1x Authentication Setup
1.
2.
3.
Open the properties for the wireless connection, by selecting Start - Control Panel Network Connections.
Right Click on the Wireless Network Connection, and select Properties.
Select the Authentication Tab, and ensure that Enable network access control using IEEE
802.1X is selected, and Smart Card or other Certificate is selected from the EAP type.
Figure 39: Authentication Tab
Encryption Settings
The Encryption settings must match the APs (Access Points) on the Wireless network you wish
to join.
•
Windows XP will detect any available Wireless networks, and allow you to configure each
network independently.
42
PC and Server Configuration
•
Your network administrator can advise you of the correct settings for each network. 802.1x
networks typically use EAP-TLS. This is a dynamic key system, so there is no need to enter key values.
Enabling Encryption
To enable encryption for a wireless network, follow this procedure:
1. Click on the Wireless Networks tab.
Figure 40: Wireless Networks Screen
2.
3.
Select the wireless network from the Available Networks list, and click Configure.
Select and enter the correct values, as advised by your Network Administrator.
For example, to use EAP-TLS, you would enable Data encryption, and click the checkbox
for the setting The key is provided for me automatically, as shown below.
43
Wireless Access Point User Guide
Figure 41: Properties Screen
Setup for Windows XP and 802.1x client is now complete.
44
PC and Server Configuration
Using 802.1x Mode (without WPA)
This is very similar to using WPA-802.1x.
The only difference is that on your client, you must NOT enable the setting The key is provided
for me automatically.
Instead, you must enter the WEP key manually, ensuring it matches the WEP key used on the
Access Point.
Figure 42: Properties Screen
Note:
On some systems, the "64 bit" WEP key is shown as "40 bit" and the "128 bit" WEP key is
shown as "104 bit". This difference arises because the key input by the user is 24 bits less than
the key size used for encryption.
45
Chapter 5
Operation and Status
This Chapter details the operation of the Wireless Access Point and the status
screens.
Operation
Once both the Wireless Access Point and the PCs are configured, operation is automatic.
However, you may need to perform the following operations on a regular basis.
•
If using the Access Control feature, update the Trusted PC database as required. (See
Access Control in Chapter 3 for details.)
•
If using 802.1x mode, update the User Login data on the Windows 2000 Server, and
configure the client PCs, as required.
Status Screen
Use the Status link on the main menu to view this screen.
Figure 43: Status Screen
46
Operation and Status
Data - Status Screen
Access Point
Access Point Name
The current name will be displayed.
MAC Address
The MAC (physical) address of the Wireless Access Point.
Domain
This is the region for which this Wireless Access Point is licensed
for use.
Firmware Version
The version of the firmware currently installed.
TCP/IP
IP Address
The IP Address of the Wireless Access Point.
Subnet Mask
The Network Mask (Subnet Mask) for the IP Address above.
Gateway
Enter the Gateway for the LAN segment to which the Wireless
Access Point is attached (the same value as the PCs on that LAN
segment).
DHCP Client
This indicates whether the current IP address was obtained from a
DHCP Server on your network.
It will display "Enabled" or "Disabled".
2.4GHz Wireless
SSID
The current SSID.
Channel/Frequency
The Channel currently in use is displayed.
Wireless Mode
The current wireless mode is displayed.
Operating Mode
The current operational mode is displayed.
Authentication
This displays the current Authentication setting.
Encryption
The current Encryption setting is displayed.
Access Control
This indicates whether the Access Control feature is Enabled or
Disabled..
Buttons
Log
Click this to open a sub-window where you can view the activity
log.
Stations
Click this to open a sub-window where you can view the list of all
current Wireless Stations using the Access Point.
2.4GHz Statistics
Click this to open a sub-window where you can view Statistics on
data transmitted or received by the Access Point.
47
Wireless Access Point User Guide
Activity Log
This screen is displayed when the Log button on the Status screen is clicked.
Figure 44: Activity Log Screen
Data - Activity Log
Data
Current Time
The system date and time is displayed.
Log
The Log shows details of the existing connections to the Wireless
Access Point.
Buttons
Refresh
Update the data on screen.
Save to file
Save the log to a file on your pc.
Clear Log
This will delete all data currently in the Log. This will make it
easier to read new messages.
48
Operation and Status
Station List
This screen is displayed when the Stations button on the Status screen is clicked.
Figure 45 Station List Screen
Data - Station List Screen
Station List
MAC Address
The MAC (physical) address of each Wireless Station is displayed.
Mode
The mode of each Wireless Station.
Status
The current status of each Wireless Station is displayed.
Refresh Button
Update the data on screen.
49
Wireless Access Point User Guide
Statistics Screen
This screen is displayed when the 2.4GHzStatistics button on the Status screen is clicked. It
shows details of the traffic flowing through the Wireless Access Point.
Figure 46: Statistics Screen
Data - Statistics Screen
System Up Time
System Up Time
This indicates how long the system has been running since the last
restart or reboot.
2.4GHz Wireless
Authentication
Deauthentication
Association
Disassociation
Reassociation
Wireless
MSDU
Data
Number of Data transmitted to and received from Wireless Stations.
Multicast Packets
Number of Broadcast packets transmitted to and received from
Wireless Stations, using Multicast transmission.
Management
Control
50
Chapter 6
Other Settings & Features
This Chapter explains when and how to use the Wireless Access Point's
"Management" Features.
Overview
This Chapter covers the following features, available on the Wireless Access Point’s Management menu.
•
Admin Login
•
Config File
•
Upgrade Firmware
Admin Login Screen
The Admin Login screen allows you to assign a password to the Wireless Access Point. This
password limits access to the configuration interface. The default password is password. It is
recommended that this be changed, using this screen.
Figure 47: Admin Login Screen
Data - Admin Login Screen
User Name
Enter the user name here
New Password
Enter the new password here
Repeat New Password
Re-enter the new password in this field.
You will be prompted for the password when you connect, as shown below.
51
Wireless Access Point User Guide
Figure 48: Password Dialog
•
Enter admin for the User Name.
•
Enter the Wireless Access Point’s password, as set on the Admin Login screen above.
52
Other Settings & Features
Config File
This screen allows you to Backup (download) the configuration file, and to restore (upload) a
previously-saved configuration file.
You can also set the Wireless Access Point back to its factory default settings.
To reach this screen, select Config File in the Management section of the menu.
Figure 49: Config File Screen
Data - Config File Screen
Backup
Save a copy of current settings
Click the Backup button to download the current settings to a file
on your PC.
Restore
Restore saved settings
from a file
If you have a previously-saved configuration file, you can use this
to restore those settings by uploading the file.
1. Click the Browse button and navigate to the location of the
configuration file.
2. Select the upgrade file. Its name will appear in the File field.
3. Click the Restore button to commence the upload.
4. The Wireless Access Point will need to restart, and will be
unavailable during the restart. All exiting connections will be
broken.
Defaults
Revert to factory
default settings
Use this to set the Wireless Access Point back to its factory
default settings.
•
Click Set to Defaults to start the procedure.
•
The Wireless Access Point will need to restart, and will be
unavailable during the restart. All exiting connections will be
broken.
53
Wireless Access Point User Guide
Firmware Upgrade
The firmware (software) in the Wireless Access Point can be upgraded using your Web
Browser.
You must first download the upgrade file, and then select Upgrade Firmware in the Management section of the menu. You will see a screen like the following.
Figure 50: Firmware Upgrade Screen
To perform the Firmware Upgrade:
1.
2.
3.
Click the Browse button and navigate to the location of the upgrade file.
Select the upgrade file. Its name will appear in the Upgrade File field.
Click the Upgrade button to commence the firmware upgrade.
The Wireless Access Point is unavailable during the
upgrade process, and must restart when the upgrade
is completed. Any connections to or through the
Wireless Access Point will be lost.
54
Appendix A
Specifications
Wireless Access Point
Hardware Specifications
CPU
AR2312
Radio-on-Chip
AR2112
DRAM
8 Mbytes (Expand to 64MB)
Flash ROM
2 Mbytes (Expand to 8MB)
LAN port
1 x Auto-MDIX RJ 45 for 10/100Mbps Ethernet
Embedded Atheros solution
Network Standard IEEE 802.11b (Wi-Fi™ ) and IEEE
802.11g compliance
11G
OFDM; 802.11b: CCK (11 Mbps, 5.5 Mbps), DQPSK (2
Mbps), DBPSK (1 Mbps)
Operating Frequencies 2.412.2.497 GHz
Operating Channels 802.11g: 13 for North America, 13
for Europe (ETSI), 14 for Japan
802.11b: 11 for North America, 14 for Japan, 13 for
Europe (ETSI)
Operating temperature
0~55℃
Storage temperature
-20℃~70℃
Power Adapter
DC 12V/1.2A
Dimensions
141mm (W) x 100mm (D) x 27mm (H)
Wireless Specifications
Receive Sensitivity at 11Mbps
min. -85dBm
Receive Sensitivity at 5.5Mbps
min. -89dBm
Receive Sensitivity at 2Mbps
min. -90dBm
Receive Sensitivity at 1Mbps
min. -93dBm
Maximum Receive Level
min. -5dBm
Transmit Power
18 dBm
Modulation
Direct Sequence Spread Spectrum BPSK / QPSK / CCK
Throughput
Up to 19 Mbps
Operating Range
Indoors
55
Wireless Access Point User Guide
•
30 Meters (100ft.) @ 11Mbps
•
50 Meters (165ft.) @ 5.5Mbps
•
70 Meters (230ft.) @ 2Mbps
•
9 1Meters (300ft.) @ 1Mbps
Outdoors
•
152 Meters (500ft.) @ 11Mbps
•
270 Meters (885ft.) @ 5.5Mbps
•
396 Meters (1300ft.) @ 2 Mbps
•
457 Meters (1500ft.) @ 1 Mbps
Software Specifications
Feature
Details
Wireless
•
Access point support
•
Roaming supported
•
IEEE 802.11g/11b compliance
•
Supper G (up to 108Mbps)
•
Auto Sensing Open System / Share Key authentication
•
Wireless Channels Support
•
Automatic Wireless Channel Selection
•
Antenna selection
•
Tx Power Adjustment
•
Country Selection
•
Preamble Type: long or short support
•
RTS Threshold Adjustment
•
Fragmentation Threshold Adjustment
•
Beacon Interval Adjustment
•
SSID assignment
•
Common AP
•
Repeater
•
Client AP
•
Open, shared, WPA, and WPA-PSK authentication
•
802.1x support
•
EAP-TLS, EAP-TTLS, PEAP
•
Block inter-wireless station communication
•
Block SSID broadcast
•
Web based configuration
Operation Mode
Security
Management
•
RADIUS Accounting
•
RADIUS-On feature
•
RADIUS Accounting update
•
CLI
•
Message Log
56
Appendix A - Specifications
Other Features
Firmware Upgrade
•
Access Control list file support
•
Configuration file Backup/Restore
•
Statistics support
•
Device discovery program
•
Windows Utility
•
DHCP client
•
WINS client
HTTP, FTP network protocol download
57
Wireless Access Point User Guide
FCC Statement
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one of the following measures:
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment and receiver.
•
Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
•
Consult the dealer or an experienced radio/TV technician for help.
To assure continued compliance, any changes or modifications not expressly approved by the
party responsible for compliance could void the user's authority to operate this equipment.
(Example - use only shielded interface cables when connecting to computer or peripheral
devices).
FCC Radiation Exposure Statement
This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with a minimum distance of 20
centimeters between the radiator and your body.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation.
This transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.
58
Appendix B
Troubleshooting
Overview
This chapter covers some common problems that may be encountered while using the Wireless
Access Point and some possible solutions to them. If you follow the suggested steps and the
Wireless Access Point still does not function properly, contact your dealer for further advice.
General Problems
Problem 1:
Can't connect to the Wireless Access Point to configure it.
Solution 1:
Check the following:
•
The Wireless Access Point is properly installed, LAN connections are
OK, and it is powered ON. Check the LEDs for port status.
•
Ensure that your PC and the Wireless Access Point are on the same
network segment. (If you don't have a router, this must be the case.)
•
If your PC is set to "Obtain an IP Address automatically" (DHCP
client), restart it.
•
You can use the following method to determine the IP address of the
Wireless Access Point, and then try to connect using the IP address, instead of the name.
To Find the Access Point's IP Address
1. Open a MS-DOS Prompt or Command Prompt Window.
2. Use the Ping command to “ping” the Wireless Access Point. Enter
ping followed by the Default Name of the Wireless Access Point.
e.g.
ping SC003318
3.
Check the output of the ping command to determine the IP address of
the Wireless Access Point, as shown below.
Figure 51: Ping
If your PC uses a Fixed (Static) IP address, ensure that it is using an IP
Address which is compatible with the address of the Wireless Access Point.
(The default IP Address and Mask of the Wireless Access Point is
192.168.0.100 and 255.255.255.0.) On Windows PCs, you can use Control
Panel-Network to check the Properties for the TCP/IP protocol.
59
Wireless Access Point User Guide
Problem 2:
My PC can't connect to the LAN via the Wireless Access Point.
Solution 2
Check the following:
•
The SSID and WEP settings on the PC match the settings on the Wireless Access Point.
•
On the PC, the wireless mode is set to "Infrastructure"
•
If using the Access Control feature, the PC's name and address is in the
Trusted Stations list.
•
If using 802.1x mode, ensure the PC's 802.1x software is configured
correctly. See Chapter 4 for details of setup for the Windows XP 802.1x
client. If using a different client, refer to the vendor's documentation.
60
Appendix C
Windows TCP/IP
Overview
Normally, no changes need to be made.
•
By default, the Wireless Access Point will act as a DHCP client, automatically obtaining a
suitable IP Address (and related information) from your DHCP Server.
•
If using Fixed (specified) IP addresses on your LAN (instead of a DHCP Server), there is
not need to change the TCP/IP of each PC. Just configure the Wireless Access Point to
match your existing LAN.
The following sections provide details about checking the TCP/IP settings for various types of
Windows, should that be necessary.
Checking TCP/IP Settings - Windows 9x/ME:
1.
Select Control Panel - Network. You should see a screen like the following:
Figure 52: Network Configuration
2.
3.
Select the TCP/IP protocol for your network card.
Click on the Properties button. You should then see a screen like the following.
61
Wireless Access Point User Guide
Figure 53: IP Address (Win 95)
Ensure your TCP/IP settings are correct, as follows:
Using DHCP
To use DHCP, select the radio button Obtain an IP Address automatically. This is the default
Windows settings.
Restart your PC to ensure it obtains an IP Address from the Wireless Access Point.
Using "Specify an IP Address"
•
If your PC is already configured, do NOT change the settings on the IP Address tab shown
in Figure 53 above.
•
On the Gateway tab, enter the Wireless Access Point's IP address in the New Gateway field
and click Add. Your LAN administrator can advise you of the IP Address they assigned to
the Wireless Access Point.
Figure 54: Gateway Tab
•
On the DNS Configuration tab, ensure Enable DNS is selected. If the DNS Server Search
Order list is empty, enter the DNS address provided by your ISP in the fields beside the
Add button, then click Add.
62
Appendix C - Windows TCP/IP
Figure 55: DNS Tab (Win 95/98)
Checking TCP/IP Settings - Windows NT4.0
1.
Select Control Panel - Network, and, on the Protocols tab, select the TCP/IP protocol, as
shown below.
Figure 56: Windows NT4.0 - TCP/IP
2.
Click the Properties button to see a screen like the one below.
63
Wireless Access Point User Guide
Figure 57: Windows NT4.0 - IP Address
3.
4.
Select the network card for your LAN.
Select the appropriate radio button - Obtain an IP address from a DHCP Server or Specify
an IP Address, as explained below.
Obtain an IP address from a DHCP Server
This is the default Windows setting. Using this method is recommended. By default, the
Wireless Access Point will act as a DHCP Server.
Restart your PC to ensure it obtains an IP Address from the Wireless Access Point.
Specify an IP Address
If your PC is already configured, check with your network administrator before making the
following changes.
1.
The Default Gateway must be set to the IP address of the Wireless Access Point. To set
this:
•
Click the Advanced button on the screen above.
•
On the following screen, click the Add button in the Gateways panel, and enter the
Wireless Access Point's IP address, as shown in Figure 58 below.
•
If necessary, use the Up button to make the Wireless Access Point the first entry in the
Gateways list.
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Appendix C - Windows TCP/IP
Figure 58 - Windows NT4.0 - Add Gateway
2.
The DNS should be set to the address provided by your ISP, as follows:
•
Click the DNS tab.
•
On the DNS screen, shown below, click the Add button (under DNS Service Search
Order), and enter the DNS provided by your ISP.
Figure 59: Windows NT4.0 - DNS
65
Wireless Access Point User Guide
Checking TCP/IP Settings - Windows 2000
1.
2.
Select Control Panel - Network and Dial-up Connection.
Right click the Local Area Connection icon and select Properties. You should see a screen
like the following:
Figure 60: Network Configuration (Win 2000)
3.
4.
Select the TCP/IP protocol for your network card.
Click on the Properties button. You should then see a screen like the following.
Figure 61: TCP/IP Properties (Win 2000)
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Appendix C - Windows TCP/IP
5.
Ensure your TCP/IP settings are correct:
Using DHCP
To use DHCP, select the radio button Obtain an IP Address automatically. This is the default
Windows settings.
Restart your PC to ensure it obtains an IP Address from the Wireless Access Point.
Using a fixed IP Address ("Use the following IP Address")
If your PC is already configured, check your ISP's documentation before making the following
changes.
•
Enter the Wireless Access Point's IP address in the Default gateway field and click OK.
•
If the DNS Server fields are empty, select Use the following DNS server addresses, and
enter the DNS address or addresses provided by your ISP, then click OK.
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Wireless Access Point User Guide
Checking TCP/IP Settings - Windows XP
1.
2.
Select Control Panel - Network Connection.
Right click the Local Area Connection and choose Properties. You should see a screen
like the following:
Figure 62: Network Configuration (Windows XP)
3.
4.
Select the TCP/IP protocol for your network card.
Click on the Properties button. You should then see a screen like the following.
Figure 63: TCP/IP Properties (Windows XP)
68
Appendix C - Windows TCP/IP
5.
Ensure your TCP/IP settings are correct.
Using DHCP
To use DHCP, select the radio button Obtain an IP Address automatically. This is the default
Windows settings.
Restart your PC to ensure it obtains an IP Address from the Wireless Access Point.
Using a fixed IP Address ("Use the following IP Address")
•
If your PC is already configured, do NOT change the settings on the screen shown in
Figure 63 above, unless advised to do so by your network administrator.
•
You can enter the Wireless Access Point's IP address in the Default gateway field and click
OK. Your LAN administrator can advise you of the IP Address they assigned to the Wireless Access Point.
•
If the DNS Server fields are empty, select Use the following DNS server addresses, and
enter the DNS address or addresses provided by your ISP, then click OK.
Wireless LANs
Wireless networks have their own terms and jargon. It is necessary to understand many of these
terms in order to configure and operate a Wireless LAN.
Modes
Wireless LANs can work in either of two (2) modes:
•
Ad-hoc
•
Infrastructure
Ad-hoc Mode
Ad-hoc mode does not require an Access Point or a wired (Ethernet) LAN. Wireless Stations (e.g. notebook PCs with wireless cards) communicate directly with each other.
Infrastructure Mode
In Infrastructure Mode, one or more Access Points are used to connect Wireless Stations
(e.g. Notebook PCs with wireless cards) to a wired (Ethernet) LAN. The Wireless Stations
can then access all LAN resources.
Access Points can only function in "Infrastructure" mode,
and can communicate only with Wireless Stations which are
set to "Infrastructure" mode.
SSID/ESSID
BSS/SSID
A group of Wireless Stations and a single Access Point, all using the same ID (SSID), form
a Basic Service Set (BSS).
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Wireless Access Point User Guide
Using the same SSID is essential. Devices with different SSIDs are unable to communicate with each other. However, some Access Points allow connections from Wireless
Stations which have their SSID set to “any” or whose SSID is blank ( null ).
ESS/ESSID
A group of Wireless Stations, and multiple Access Points, all using the same ID (ESSID),
form an Extended Service Set (ESS).
Different Access Points within an ESS can use different Channels. To reduce interference,
it is recommended that adjacent Access Points SHOULD use different channels.
As Wireless Stations are physically moved through the area covered by an ESS, they will
automatically change to the Access Point which has the least interference or best performance. This capability is called Roaming. (Access Points do not have or require Roaming
capabilities.)
Channels
The Wireless Channel sets the radio frequency used for communication.
•
Access Points use a fixed Channel. You can select the Channel used. This allows you to
choose a Channel which provides the least interference and best performance. For 802.11g,
13 channels are available in the USA and Canada., but 11channels are available in North
America if using 802.11b.
•
If using multiple Access Points, it is better if adjacent Access Points use different Channels
to reduce interference. The recommended Channel spacing between adjacent Access Points
is 5 Channels (e.g. use Channels 1 and 6, or 6 and 11).
•
In "Infrastructure" mode, Wireless Stations normally scan all Channels, looking for an
Access Point. If more than one Access Point can be used, the one with the strongest signal
is used. (This can only happen within an ESS.)
•
If using "Ad-hoc" mode (no Access Point), all Wireless stations should be set to use the
same Channel. However, most Wireless stations will still scan all Channels to see if there is
an existing "Ad-hoc" group they can join.
WEP
WEP (Wired Equivalent Privacy) is a standard for encrypting data before it is transmitted. This
is desirable because it is impossible to prevent snoopers from receiving any data which is
transmitted by your Wireless Stations. But if the data is encrypted, then it is meaningless unless
the receiver can decrypt it.
If WEP is used, the Wireless Stations and the Wireless Access Point must have the same
settings.
WPA-PSK
Like WEP, data is encrypted before transmission. WPA is more secure than WEP, and should
be used if possible. The PSK (Pre-shared Key) must be entered on each Wireless station. The
256Bit encryption key is derived from the PSK, and changes frequently.
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Appendix C - Windows TCP/IP
WPA-802.1x
WPA-802.1x - This version of WPA requires a Radius Server on your LAN to provide the
client authentication according to the 802.1x standard. Data transmissions are encrypted using
the WPA standard.
If this option is selected:
•
This Access Point must have a "client login" on the Radius Server.
•
Each user must have a "user login" on the Radius Server.
•
Each user's wireless client must support 802.1x and provide the login data when required.
•
All data transmission is encrypted using the WPA standard. Keys are automatically generated, so no key input is required.
802.1x
•
This uses the 802.1x standard for client authentication, and WEP for data encryption. If
possible, you should use WPA-802.1x instead, because WPA encryption is much stronger
than WEP encryption.
•
If this option is selected:
•
This Access Point must have a "client login" on the Radius Server.
•
Each user must have a "user login" on the Radius Server.
•
Each user's wireless client must support 802.1x and provide the login data when required.
•
All data transmission is encrypted using the WEP standard. You only have to select the
WEP key size; the WEP key is automatically generated.
71
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