Trendnet TEW-212APBO User Manual

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TEW-212APBO

Wi-Fi Inter-Building Router
User’s Guide
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Contents
Overview __________________________________________________________________ 2
Operation Mode Settings Page_________________________________________________ 14 General Configuration Settings Page____________________________________________ 15 Network Configuration Settings page ___________________________________________ 17 Wireless Configuration Settings page ___________________________________________ 19 Redirection Service _________________________________________________________ 23
Firewall configuration _______________________________________________________ 24 ACL Configuring___________________________________________________________ 28 Static routing configuration ___________________________________________________ 28 DHCP Service Configuration__________________________________________________ 31 Port forwarding configuration _________________________________________________ 33 Setting up administrator password______________________________________________ 35
Clients page _______________________________________________________________ 36 Loopback Test _____________________________________________________________ 37 Configuring SNMP management_______________________________________________ 38 Site survey page____________________________________________________________ 39 Monitoring page____________________________________________________________ 40 Upgrade page ______________________________________________________________ 42 Upgrade Utility ____________________________________________________________ 44 Reboot Page _______________________________________________________________ 48 Reset page ________________________________________________________________ 48
Administration _____________________________________________________________ 50
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Overview
The TEW-212APBO is a standalone wireless client, which provides IP routing functionality between a Local Area Network (LAN) and a Wide Area Network (WAN). It uses an Ethernet interface to connect to LAN, and wireless 802.11b-based interface to connect to a Wireless Networking System, which provides miscellaneous WAN access.
Wireless Networking System
TEW-212APBO is part of the Wireless Internet Service Provision System. It provides access for locally connected computers to WAN, such as the Internet. In Figure 1 shown below, the client devices are connected to the access points (please refer to TEW-212APBO specification).
Figure 1: TEW-212APBO Solution
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Features

TEW-212APBO is based on indoor-outdo or architecture. An outdoor unit with 2.4 GHz antennas is placed on the mast or roof of construction elements. It is connected to the indoor unit via a UTP cable. An individual computer or an entire local network can gain ac cess to the Internet by simply connecting the TEW-212APBO indoor unit to the switch/hub. TEW­212APBO is a full featured IP router with extensive firewall capabilities and a user-friendly web interface.
Wireless Access Point or Client (configurable)
Router/Bridge (configurable) and Firewall
Telecom features Built-in
Web management Interface
TEW-212APBO can be managed via:
FTP
Telnet
WWW
SNMP (v1, v2)
It is possible to modify the following information through a web interface:
General information
Network LAN and WAN interfaces settings
Wireless device settings
DHCP server configuration
IP Firewall
Port forwarding
Static routing
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5 Operating Modes

The TEW-212APBO supports 5 different kinds of operating modes: AP­Router, AP Bridge, Station Bridge and Station Router.
AP-Router Mode
In this mode, the TEW-212APBO wireless unit plays the roles of the wireless network Access point an d a router.
Figure 2: AP-Router m ode
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AP Mode
In this mode, TEW-212APBO acts as conventional wireless Access point. The routing function is disabled. Local Network Area is automatically set up to W irele ss.
Figure 3: AP mode
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Bridge Mode
When operating in this mode, one TEW-212APBO device can connect with another TEW-212APBO device and form wireless “bridge” interconnecting two or more local networks. Note that all these devices must work in the same frequency channel and must have the same SSID string. Please also note that wireless “bridge” DOES NOT retransmits packets.
Figure 4: Bridge mode
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Note: The following operational modes need to be configured, refer to
upgrade page for more information.
Station – Router mode
In this mode, TEW-212APBO wireless interface works as wireless
network client (c o nne cts to th e Acces s point). Router part is active.
It must be defined which interface will be dedicated to the Local Area Network LAN, and which to the External Network. Routing is done by forwarding packets to the default gateway, which is set up to External Network, so it is mandatory to define Local Network Area interface.
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Client-Bridge mode
In this mode, TEW-212APBO acts as wireless card (associates to the
access point)
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Starting Up

To setup TEW-212APBO for the first time can be performed through a web browser on a computer connected to the local network. The administrator can use one of standard browsers available (e.g., Netscape Navigator, or Microsoft Internet Explorer versions 4.0 or later). Once the setup process is completed, TEW­212APBO can be managed from any computer on the network that has a web browser.
The steps to setup TEW-212APBO using a web browser are listed below:
1. Launch a standard web browser on a computer connected to the
network.
2. Enter the TEW-212APBO IP address given to you from the ISP
into the URL field of your web browser (the default setting is
192.168.2.2). TEW-212APBO provides SSL (Secure Sockets Layer) feature, so use https://192.168.2.2
to connect.
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If local network settings were configured correctly, then a login screen should appear:
Input the username (the default username is “root”) and correct password (the default password is “pass”) and click the “OK” button to pass the security control screen. Once the correct username and password combination is entered, a TEW-212APBO welcome screen should appear as below:
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Figure 5: Welcome screen
Click on the “Setup Wizard” button on the menu bar to begin TEW­212APBO device configuration (described in the following section).
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Device Status page

Device status page displays all information includes system, interface and network status.
Figure 6: Device Status table
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The Device Status page is divided into to four parts: System Status table - This table shows TEW-212APBO software versio n,
system uptime (after last reboot), average load, memory usage and radio signal strengt h (RSSI).
System service and interfac es sta tus is sh o wn in “ Service/Interface Status” table - This table shows wireless interface and system services
state. Possible values in this table can be Enabled/Disabled for appropriate interface/service state.
Network status is shown in the “Network Status” table - This table shows operating mode of the device, which can be “Router” for AP­Router mode, “AP” – for access point mode and “Bridge” for bridge mode.
Network statistics are shown in se parate table - This table contains statistics for both interfaces of the TE W-212APBO – wired and wireless. The wired interface is called LAN, and the wireless interface is called WLAN. Each column corresponds to the statistics value of the interfaces:
TxData – amount of data transferred TxErrors – amount of transmit errors RxData – amount of data received RxErrors – amount of receive errors Collisions – amount of network coll isions
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Setup Wizard

Operation Mode Settings Page

The first page of the TEW-212APBO configuration wizard is dedicated to the device operating mode selection:
Figure 7: Device Mo de Settings page
This enables a user to select the operating mode of the device.
Click on the “Reset” button to reset the page fields to their default values. Select one of the three device modes and click on the “Next” button to continue the configuration wizard (For a detailed explanation of the wizard settings, please refer to the TEW-212APBO Q uick Installation Guide).
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General Configuration Settings Page

Various general device parameters can be set in this page. All of those parameters are optional.
Figure 8: General Configuration Settings page
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These parameters include:
Hostname – a general network parameter returned in statistics routines DNS Server address – this Domain Name Server address is assigned
to the PCs requesting DNS address through DHCP (Dynamic Host Configuration Protocol). System Identification – free form system identification code for easier device identification by the service staff. Serial Number – A unique serial number of the TEW-212APBO device.
Address – The location of the device. Coordinates – GPS coordinates. Service staff fills this field when
deploying de vic e. Customer Name – customer name, which is used for easy identification of TEW-212APBO
Click on the “Back” button to go to the previous page, Operating Mode Settings. Click on the “Reset” button to reset all page fields to their previous values and cli c k on the “Next” button to continue the configuration wizard.
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Network Configuration Settings page

Router Mode
In Router mode, LAN (Local Area Network) and WAN (Wide Area Network – For TEW-212APBO, this can be the enterprise networks on the Internet) configurations can be modified using the LAN Settings and the WAN Settings tables shown as followed:
Figure 9: Network Configuration Settings page -1 (Router mode)
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WAN settings must be set up according to the information provided by the ISP. There is no such restriction on LAN settings. WAN access can be disabled to restric t LAN users access to this network.
The masquerade setting enables the users to use the NAT (Network Address Translation) feature of TEW-212APBO. When this option is enabled, TEW­212APBO “hides” LAN addresses to the “external world”. Access to the services, such as web services, provided by servers in the LAN, can be achieved by using the port forwarding feature.
L Hint: Use kn own private IP addresses for the local n etwork, because if you use public addresses, you will not be able to connect to WAN. It is recommended to use IANA (Internet Assigned Numbers Autho rity) reserved private address sp ace (10. 0.0.0/8, 172.16.0. 0/12 a nd 19 2. 16 8.0.0/16) .
AP Mode
In AP and Bridge mode, TEW-212APBO do es not require an active WAN (Wide Area Network) interface, so the “WAN Interface Settings” table is not displayed.
Figure 10: Network Configuration Settings page -2 (non-Router m ode)
Click on the “Back” button to go back to the previous page, which is General Configuration Settings. Click on the “Reset” button to reset all current page fields to their previ ous values and click on the “Next” button to continue wizard.
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Wireless Configuration Settings page

Wireless device is configured as shown below:
Wireless Settings page (Station)
In Station mode, essential wireless device parameter is Access point SSID ­Service Set Identifier (Wireless Network Identifier) is the group name that will be shared by every member of wireless network. In Station mode device will only be able to connect with an Access Point, which has the same SSID.
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In AP, AP-Router or Bridge mode, additional parameter setup is provided:
Wireless settings page (AP) This parameter is called Radio frequency channel. In Station mode, this setting is set up automatically, but in AP (or AP-Router) mode it can be set up manually or selected autom atically.
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Figure 11: Wireless Configuration Settings page
At lease two essential parameters are required to setup:
Access Point SSID (Service Set Identifier): This is a case-sensitive
parameter to uniquely identify your radio network.
Default Channel for BSS: It can be set up by selecting a fixed
channel or have the channel automatically assigned.
L Hint: Use the site survey utility in System Tools to verify a fixed channel selection. This utility will help the administrator to discover unused channels, or to check the signal strengths of other Access points of the selected channel.
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In Bridge mode, there is a column field called " Bridge ID". This value should be assign ed with different for all bridges connected to the same LAN as a bridge ID. The value itself has no meaning if it's less or greater than other's bridge ID. It can be from 0 to 255 . For example, it could be as signed value "20" to the first bridge and "25" to the second.
You may desire additional security on your wireless network, which can be achieved by using WEP (Wired Equivalent Privacy) encryption. TEW­212APBO offers 64/128 bit WEP securities on wireless transmissions. Encryption keys are combined by 5 (for 64 bit WEP) or 13 (for 128 bit WEP) pairs of hexadecimal di git and separated by colon (e.g., 01:23:45:67 :89 for 64 bit WEP encryption keys). WEP encrypts each frame transmitted from the radio using one of the keys from this table.
When an encrypted frame is received, it will only be accepted if it is decrypted correctly, therefore the receiver must have the same WEP key used by the transmitter. Each key must consist of hex digits, which is composed of digits 0-9 and letters A-F.
L Hint: Network traffic encryption requires a significant amount of resources, so its usage is recommended only when security is crucial. Usually it is not used in simple commercial net works transmitting everyday data. Also usually is more efficient to protect sensitive documents before transmitting over network e.g., use archive program with password protection, than encrypt all network traffic.
The Power Output, in dBm, is the strength of the RF radio signal transmitted by wireless card. A larger num ber represents a stronger signal.
aNote: Excessive signal strength may lead to higher power consumption and resulting in the device operating at higher temperature. Also it may disturb operati on of th e wireless device i n th e sa me radi o fr eq uency channel .
Click on the “Back” button to return to the previous page, the Network Configuration Settings page. Click on the “Reset” button to reset all page fields to thei r previous values. Click on th e “Save settings” to save and to close the configurin g w indow .
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Redirection Service

If a new IP was assigned and the “Save Settings” button was click to save the network setting, a waiting and redirection message pops up as shown below:
Figure 12: Waiting and redirection message
It indicates that the browser will be redirected to a new site (new IP). If the new site is in a different subnet from the old one (e.g., from
192.168.2.218/24 to 168.20.1.10/24), the redirection function will not work. The IP of the local connected computer must change to the same subnet of the new site (168.20.1.x/24) first. And then re-click the redirection message above or re-enter the new IP of TEW-212APBO into UR L field of browser, to reconnect to the site.
If the new site is in the same subnet as the old site (e.g., from 192.168.2.218 to 192.168.2.100), and the redirection function did not redirect to new site automatically, please re-click the redirection message or refresh button in the browser.
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Advanced Settings

Setting up advanced TEW-212APBO settings requires some advanced knowledge of the TCP/IP network structure and functionalities. It is recommended that only skilled network administrators should use these settings.

Firewall configuration

Warning: Once enable the Firewall Settings, please do not apply “Anywhere” on Source IP Address/Mask to DROP or Reject this unit on Destination IP Address/Mask because y ou will be restricted wh ile you would like to make a configuration with this unit.
IP firewall configuration page provides user firewall services control. User can add, modify or delete customized firewall rules. Main firewall page view is shown as followed:
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Figure 13: IP Firewall Settings page
aNote: In AP and Bridge mode TEW-212APBO has no active WAN (Wide Area Network) interface, so the “Firewall configuration” page is not displayed
This page shows service state and firewall rules list. Rules are divided in two parts – Input rules, which apply to the incoming packets, and the Outpu t rules, which apply to the outgoing packets. User can change these rule lists by editing exi sting rules, deleting unnecessary ones, and adding new rules. Modification and addition of the rules is shown below:
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Figure 14: Firewall rule edit
The main firewall rule parameters are:
Target – this implementation of firewall control supports only two
types of rules – ACCEPT and DROP. The appropriate policy defines what to do if packet matches rule.
Source IP Address – source IP address, can be speci fied as any
Source Netmask – source subnet, can be spec ified as any
Source port(s) – can be specified in two ways: All or a given port
range
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Destination IP Address – specified the same as Source IP
Destination Ne tmask – specified the same as Sourc e Netmask
Destination por t(s) – specified the same as Source port
Network protocol – network protocol which the rule affects. Can be
specified as one of TCP/UDP/ICMP or any
L Hint: If an exact port is specified, use of “any” protocol setting makes no sense (different protocols us e their own port rang es). Use exact p rotocol , or use several rules to specify traffic filtering on required ports.
aNote: When defining rules, avoid DENY type rules using “any” as the address class, which can cause loss of web management connection (e.g., deny traffic from any to any IP address).
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ACL Configuring

All clients MAC are set by acceptable as default in Access Control List function. To deny the MAC address, just click “Add New Rule” button to add the new record. Access Control List setting is shown be low :
Figure 15: ACL Settings p age

Static routing configuration

Static routing service lets user specify static routes, which is present in system routing table form system startup. This service is needed, when local computers are divided into different subnets, using external router, etc. Static routing page is shown as followed:
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Figure 16: Static Routing Settings page
L Hint: above figure shows default system routes, which are added automatically , and restored after any networ k configuration . However these routes can be edited for temporary needs.
This page provides a user static route list (present on the system), and ability to edit, delete and add routes. Rule editing and adding is done in the following page:
aNote: In AP and Bridge mode TEW-212APBO has no active LAN (Local Area Network) interface, so the “Static Routes” page is not displayed
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Figure 17: Route editing table
Each rule in the route list consists of Device (interface) selection (can be wireless or Ethernet), Destination address (depending on netmask, can be a host or subnet), Gateway address (if no t specified, program uses default interface gateway), Metric (route priority), and Netmask. If netmask is specified as 255.255.255.255, then routing program assumes that it is the “host” route ty pe; otherwise route specifies “net”. Note that routes are automatically enabled when the “Save Route” button is pressed. If a rule is specified incorrectly, no warning is provided, but rule is not added to the system. Only skilled network administrator with in-depth knowledge of th e network topology should use the static routing feature.
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DHCP Service Configuration

The Dynamic Host Configuration Prot ocol (DHCP) provides IP configuration parameters to hosts in a client-server model. DHCP servers assign network addr e sse s and deliver the configurati on parameters to other (client) hosts.
DHCP server featur e is offered only in AP Router mode. This server set up is done in the DHCP Settings table, which is sh ow n be low.
Figure 18: DHCP Server Settings page
DHCP server service can be enabled or disabled from this page. Service state is altered, and new configuration is loaded after “Save Settings” button is clicked. The IP Address range entered must be in the same subnet the LAN interface of TEW-212APBO.
L Hint: Remember to set up local computers as DHCP client, when the DHCP server is enabled. If the server detects that some computers already have addresses from the defined range, the address is not given to the computers.
aNote: In AP and Bridge mode TEW-212APBO has no active LAN (Local Area Network) interface, so “DHCP Settings” page is not displayed.
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Click on the “Reset” button to reset all page fields to thei r previous values and click on the “Save Settings” button to save the DHCP server setting.
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Port forwarding configuration

Port forwarding service provides access to locally connected computers with dedicated serv ices by overriding the f irewall’s NAT (Networ k Address Translation) feature. Example of such services can be chat programs, online games, etc. Port forwarding administrator can define local computer, to which data from specified ports of firew all are automatically redirected to ports of this local computer. Port Forwarding Settings page is shown below:
Figure 19: Port Forwarding Settings table
aNote: In AP and Bridge mode TEW-212APBO has no active LAN (Local Area Network) interface, so the “Port Forwarding Settings” page is not displayed
From this page, administrator can modify port forwarding rule list by adding new, delete and edit existing rules. Also the service can be enabled or disabled from this page. When edi ting existing rule, or a dding new one – the following page is displayed:
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Figure 20: Port Forwarding Rule editin g table
As shown in Figu re 20, a port forwarding rule consists of protocol specification – UDP or TCP protocol, port on the TEW-212AP BO needed for application, the local IP address and port to which arriving data will be redirected.
L Hint: Somet imes games , chat prog rams and other ap plicatio ns may ne ed to change thei r network settings to something like “Use Firewall” or “Use proxy” to work properly. This setting may and sometimes should be used with Port Forwarding service. When remote server desires to define IP address to commun icate, you should specify not your local IP address, but IP address of TEW-212APBO.
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Setting up administrator password

Administrator password is a key used to access TEW-212APBO configuration functions in administrator security required login screen (please refer section “Starting Up”). It will be requested when s etting up or maintaining TEW-212APBO. This password is set up in the Administrator Settings table shown in following:
Figure 21: Administrator Settings table
To change the password, you must enter the current password in “Old Password” field, then enter a new password in the “New Password” field. Re-enter the same value in the “Retype New Password” field. Use hard-to­guess password, i.e. more than five characters, containing both letters and numbers, and is not a dictionary word. Be sure to remember this password (or write it down at a safe location) to access the TEW-212APBO management administration features in the future. Default factory password setting is “pass” (password is case-sensitive). This password should be changed frequently to prevent unauthorized user access to TEW-212APBO.
Click on the “Reset” button to reset all page fields to thei r previous values and click on the “Save Settings” button to save the administrator settings.
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System Tools

Clients page

Connected Clients page shows connected wireless clie nts list (AP and AP­Router modes only). This list is shown i n the form of a table:
Figure 22: Connected Clients page
In the “Client MAC address” column, connected wireless card MAC (hardware) addresses are shown. Signal and Noise columns show radio signal and noise levels. The column, “Rate”, shows co nnection bit rate (connection speed) in hundreds of kilobits. This rate can be easily converted in to megabits by dividing this number by 10. For example 110 corresponds to 11Mbits, 55 correspond to 5.5Mbits and so on.
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Loopback Test

Figure 23: Loopback Test pag e
Loopback test is used for wireless link diagnostics. This page shows data transfer rate between TEW-212APBO and endpoint device. This transfer rate is measured by sending ICMP (Internet diagnostics protocol) stream to the end point device. Data is refreshed every second.
To start Loopback testing, enter endpoint IP address in the “Endpoint IP address” field and click on the “Start” button in the lower right corner of the page. Status line will show last measured data transfer rate, and the time when this data was received from the endpoint. To stop loopback-testing, click on the “Stop” button.
aNote: Due to the natur e of thi s test , test d ata is stored in the web br owser applet area. Clic king t he “Refresh” or “Back” buttons when tes t is runni ng will stop the test and clear the collecte d test data.
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Configuring SNMP management

SNMP (Simple Network Management Protoc ol) service is configured in the SNMP Settings page. This page is used for setting up read-only and read­write communities:
Figure 24: SNMP Settings
Community strings are used for SNMP authentication purposes. It is possible to allow or deny IP address groups from accessing TEW-212APBO using SNMP. IP address and netmask combination 0.0.0.0/32 means “ANY” IP address. It could be setup by a specified IP, ex 192.168.2.100/32, or by a group, ex 192.168.2.0/24.
L Hint: For security purposes, use only local IP addresses for Read/Write access
Click on the “Reset” button to reset all page fields to their default values and click on the “Save Settings” button to save the SNMP setting.
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Site survey page

Figure 25: Site Survey Test Results page
Site survey test shows the load situation in the wireless network. Using this test, user can scan for active Access Points; check the operating channels and their respective signal/noise levels.
L Hint: Because wireless card is scanning through all radio frequency channels, the page load i ng time is mu ch lo nger w he n compa re d to the o the r TEW-212APBO management pages. Use the rescan button to check signal/noise levels when deploying new Access Points in the existing wireless network.
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Monitoring page

Figure 26: Monitoring page
The Monitoring menu shows TX/RX statistics graph. These statistics show a five-minute average traffic rate over t he last 24 ho ur s peri od. RX (green) indicates incoming (Received) traffic and TX (red) indicates outgoing (Transmitted) traffic. The TX/RX monit oring is restarted on every TEW-212APBO reb oot. The reason is that TEW-212APBO has no real time clock, and the time used is relative to TEW-212APBO restart. The first statistics appear as 2 points after 5 minutes after TEW-212APBO. Normal view is acquired 10 minutes and later after TEW-212APBO reboot. Click on the 'Show' button is needed when first time the TX/RX statistics applet appears in browser window. Next time clic k 'Refresh' button which appears instead of 'Show' button to get newer TX/RX statistics. You can also manipulate on TX/RX graph time interval. There are two drop­down menus used for this purpose. The first one is used to choose the interval starti ng hou r . It is possi ble to choose any hour fro m the la st 24 hou rs , but choice can be l imited to fewer hours because of TEW-212A PBO reboot. The second drop-down is used to choose time interval duration in hours. The possible choices are from 1 to 25 hours, but it also can be limited to fewer hours because of TEW-212APBO reboot. Sometimes you can g e t 24 instead of 25 hours limit because relative time is even to hour range.
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aNote: On older firmware versions, only 'Refresh' or 'Show' buttons are available, but they have the same behaviour.
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Upgrade page

a Important! Do not enter thi s page if there is no n eed to upgrade TEW- 212APBO. Simply click on the “Reset” button, if no upgrade is necessary.
Entering this page will put the device into UPGRADE mode. All of the device functions will be SUSPENDED. Once the device enters the UPGRADE mode, it can only be upgraded or rebooted.
L Hint: Because upgrade is done using the WEB management screen, all management pages still work, so it is still possible to configure TEW­212APBO before rebooting it.
aNote: Upgrade function on WEB-base management supports ONLY from previous version firmware to later one which provide the same operational modes. I.e. Upg rade from 2.00 AP vers ion to 2.01 AP version, or 2.00 Station version to 2.01 Station version.
Figure 27: Upgrade page
TEW-212APBO firmware is upgraded using the “Upgrade” page. In this page, the current firmware version is shown. If there is a need to update this
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firmware, a valid firmware file must be selected first. Click on the “Browse” button to do th is. After clicking this button – a fil e selection dialog should appear:
Figure 28: Firmware file selection dialog
When firmware file is selected, its name is shown in the “Firmware” f ield. Then click on the “Upgrade” button to upgrade firmware.
A “System Firmware Upgrade Process” screen will be displayed and firmware should be upgraded as shown below:
Figure 29: System Firmware Upgrade Process Status
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A percentage will be showed on the status bar to indicate the upgrade status. After completed the firmware upgrade, the T EW-212APBO device will be rebooted automatically.
aNote: The new firmware file overwrites the old one completely. All custom TEW-212APBO configuration settings will be reset to the default values. Write down all configuration settings to be preserved, and set up them, when TEW-212APBO starts after firmware upgrade. Initial TEW­212APBO setup is described in the “Starting Up” chapter of this manual.

Upgrade Utility

TEW-212APBO can also be configured as a wireless station, but the unit requires full firmware upgrade, which can be done ONLY with U pgrade utility. Therefore the TEW-212APBO comes with an upgrade utility, “upgrade.exe”, to allow the user to perform the task. The program runs under MS Windows 2000 family and MS Windows XP. Before the pr ogram is executed, the firmware should be located first. It can be found under the root directory in the CD.
When executing the program, the following screen should appear:
Figure 30: Upgrade utility
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Step 1 In the Host address field; enter the TEW-212APBO IP address for which the firmware is to be upgraded.
Figure 31: Fill in the IP address
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Step 2 Enter the root pas sword and choose Full up grade to switch from AP mode to Station mode or vise versa or Software upgrade to perform
version’s upgrade i.e. AP 2.0 to AP 3.0 or Stat ion 1.0 to Station 2.0.
Figure 32 root password is required
Step 3 Specify the TEW-212APBO firmware file, before clicking on t he “Upgrade” button.
Figure 33 Specify firmware locations.
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Step 4 When the process is completed, it will be indicated in the upgrade log window.
Figure 34 Upgrade finished.
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Reboot Page

Click on the “Reboot” button to reboot TEW -212APBO device via web management. All functions will be stopped while the device is rebooted.

Reset page

To reset the TEW -212APBO device to the fact ory setting, click on the “Reset” button. A waiting & redirection message should be shown as below (for the redirection service, please refer to the redirection service section for detail):
aNote: All customized TEW-212APBO co nfiguration settings will b e reset to the default values. Wri t e do wn any configuration changes to be preserved, and set up them, when TEW-212APBO starts after reset. Initial TEW­212APBO setup is described in the “Starting Up” chapter of this manual.
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Specifications

Hardware
CPU ETRAX-100LX RAM 16 MB Flash Memory 4 MB Ethernet 10/100 Mbit Wireless IEEE 802.11b
Operating system
Linux version 2. 4.1 4.
Network Subsystem
TCP/IP protocol suite
Firewall Packet filtering Masquerading (NAT) Port forwarding
DHCP DHCP server for one interface (Ethernet)
SNMP
802.11 MIB support (read write) MIB-I, MIB2 support (read only)
Routing Static routing only
Wireless Wireless client mode support. Wireless access point mode support Wireless bridge mode support WEP-64bits, WEP-128bits encryption support
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Administration

Web Access to all user functions through web browsers (Java Script must be enabled) Dynamic configuration changes (no reboot necessary)
Telnet All console features
Scripting User script support (available on the Pro version)
SNMP
802.11 MIB support (read write) MIB-I, MIB-II support (read only) Separate community strings for read and write support, standard SNMP trap support.
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Glossary

Symbols:
10BaseT 10 Mbps/baseband/twisted pair. The IEEE standard for twisted pair Ethernet.
IEEE 802.11b The IEEE standards for the definition of the Wireless high speed (11Mbit) protocol for wirele ss communication.
A
Authorization the process of determining what types of activities a user is permitted to undertake. Usually, authorization is in the context of authenticatio n: o nce y ou have authenticated a user, they may be authorized for different types of access or activity.
B
Backbone The primary connectivity mechanism of a hierarchical distributed system. All systems, which have connectivity to an i ntermediate system on the backbone, are assured of connectivity to each other. This does not prevent systems from setting up private arrangements with each other to bypass the back bone for reasons of cost, performance, or security .
Bandwidth Technically, the difference, in Hertz (Hz), between the highest and lowest frequencies of a transmissi on channel. However, as typically used, the amount of data that can be sent through a given communications circuit. For exam ple, typical Ethernet ha s a bandwidth of 100Mbps.
bps bits per second. A measure of the dat a transmission rate.
D
DHCP Dynamic Host Configuration Protocol. A service that lets clients on a LAN request configuration information, such as IP host addres ses, from a server.
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DNS Domain Name System. The distributed name/address mechanism used in the Internet. It comprises distributed online databases that contain mappings between hu m an-read able names and IP addresses, and servers, which provide translation services to client applications.
Domain A part of the DNS naming hierarchy. Syntactically, an Internet domain name consists of a sequence of names (labels) separated by periods (dots), e.g., “machine.company . com”. See DNS.
E
Ethernet A common, 10Mbps local area network technology invented by Xerox Corporati on at the Palo Alto Research Ce nter. Ethernet is a best-eff ort delivery system that uses CSMA/CD technology. Ethernet can be run over thinwire coaxial cable (10BASE2), thickwire coaxial cable (10BASE 5), twisted pair cable (10BASET), or fibre optic cable.
F
Filter Within the router, a filter is a process used to select which packets will be processed by the router, and which will be ignored or discarded. Selection may be based on addresses or protocol type.
Firewall A system or combination of systems that enforces a boundary between two or more netw or ks.
FLASH A new memory technology, which combines the nonvolatile features of EPROMs with the easy in-system reprogramming of conventional volati le RA M. See EPROM.
G
Gateway The original Internet term for what is now called router or more precisely, IP router. In modern usage, the term “gateway” and “application gateway” refers to systems, which perform translation from some native protocol, or physical data format to another. Examples include electronic mail gateways, which translate between X.400 and RFC 822 mail message formats. See router.
H
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Host An (end-user) computer system that connects to a network, such as a PC, minicomputer of mainframe.
I
ICMP Inter net Control Message Protocol. The TCP/IP protocol used to handle errors and c ontrol messages at the IP layer. ICMP is part of the IP protocol. Gat e ways, routers and hosts use ICMP to send reports of problems about datagrams back to the original source that sent the datagram.
Interface One of the physical ports on the router, including the Ethernet and asynchronous ports.
Interface type The type (Ethernet or Point-to-Point) of one of the interfaces on the router.
Internet A collection of networks interconnected by a set of routers, which allow them to function as a single, large virtual network.
Internet (note the capital “I”) The largest inter net in the world consisting of large national backbone networks (such as MILNET, NSFNET, and CREN) and a myriad of regional and local campus networks all over the world. The Internet is a mult iprotocol network, but generally carries TCP/IP.
Internet address See IP address.
Internet Protocol See IP.
ISP Internet serv ice provider. A company that provides Internet - related
services. Most importantly, an ISP provides Internet access services and products to other companies and consumers.
IP Internet Protocol. The network layer protocol for the T CP/IP protocol suite. It is a connectionless, best-effort packet switching protocol.
IP address A 32-b it address assigned to hosts using TCP/IP. The address specifies a specific connection to a network, not the host itself. See dotted decimal notat ion.
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L
LAN Local Area Network. Any physical network technology (such as Ethernet) that opera tes at high speed (typically 10 Mbit per second or more) over short distances (up to a few kilometers). See WAN.
LED Light Emitting Diode. A luminous indicator.
M
MAC address. The hardware address of a device connected to a shared media. For example, the MAC address of a PC on an Ethernet is its Ethernet address.
Metric A concept used to describe the cost of a route across a network, the distance to the destination at the remote end of the route, or the capacity of the route.
N
Name resolution The process of mapping a name into the corresponding address. See DNS.
NAT Network Address Translation, an Internet standard that enables a local- area network (LAN) to use one set of IP addresses for internal traffic and a second set of addr esses for external traffic. A NAT box located where the LAN meets the Internet makes all necessa ry IP address translations. NAT is used for two main tasks – to provide a type of firewall by hiding internal IP addresses and enable a company to use more internal IP a ddresses. Since they're used internally only, there's no possibility of conflict with IP addresses used by other companies and organizations.
Network A computer network is a data communications system which interconnects c omputer systems at various different sites. A network may be composed of any combination of LANs or WANs.
Network address The network portion of an IP address. For a class A network, the network address is the first byte of the IP address. For a class B network, the ne twork address is the first two bytes of the IP address. For a class C network, the network address is the first three bytes of the IP address.
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In each case, the remainder is the host address. In the Internet, assigned network addres ses are globally unique. See IP address.
Node An addressable device attached to a computer network. See host, router.
P
Packet The unit of data sent across a network. “Packet” is a generic term used to describe units of data at all leve ls of the prot oc ol st ack, b ut it is m ost correctly used to describe application data units. See datagram, frame.
Policy Organization-level rules governing accepta ble use of computing resources, security practices, and operatio nal procedures.
Port The abstraction used by Internet transport protocols to distinguish among multiple simultaneous connections to a single destination host. A port is a transport layer demultiplexing value. Each applica tion has a unique port number associated with it. It is also used to refer to one of the physical network connectors on the router.
Protocol A formal descriptio n of message formats and the rules two computers must follow to exchange those messages. Protocols can describe low-level details of machine-to-machine interfaces (e.g., the order in which bits and bytes are sent across a wire) or high-level exchanges between allocation programs (e.g., the way in which two programs transfer a file across the Internet).
Q
QOS Quality of Serv ic e. Transmission system qualities m easure in terms of reliability and availability.
R
Route The path that network traffic take s from the source to the destination. It may include many gateways, routers, hosts and physical networks.
Route table A table listing information about routes to other hosts or networks, such as the remote network or host address, the interf ace down
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which the route exists, the distance to the remote address and the cost of sending data over the route.
Router A system responsible for making decisions about which of several paths network (or Internet) traffic will follow. To do this it uses a routing protocol to gai n information about the network, and algorithms to choose the best route based on several criteria known as “routing metrics”.
S
Server A network device that provides services to client stations. Examples include file servers and print servers.
Service A term used with the router to refer to a connection to another port on (another) router, used to access dialup modems, hosts that do not support TCP/IP and other asynchronous devices.
SNMP Simple Network Mana gement Protocol. The Internet standard protocol developed to manage nodes on an IP network. See MIB.
Subnet A portion of a network, which may be a physically independent network segment, which shares a network address with other portions of the network and is distinguished by a subnet number. A sub net is to a network what a network is to an internet.
Subnet Address The subnet portion of an IP address. In a subnetted network, the host portion of an IP address is split into a subnet portion and a host portion using an address or subnet mask. See subnet ma sk, IP address and network address.
Subnet Mask A bit mask used to select bits from an Internet address for subnet addressing. The mask is 32 bits long and selects the network portion of the Internet address and one or more bits of the local portion. Sometimes called address mask.
T
TCP Transmission Control Protocol. The TCP/IP standard transport layer protocol in the Internet suite of protocols, providing reliable, connection­oriented, full-duplex streams. It uses IP for delivery.
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TCP/IP Protocol Suite Transmission Control Protocol over Internet Protocol. This is common shorthand, which refers to the suite of transport
and application protocols that runs over IP. See IP, ICMP, TC P, UDP, FTP, Telnet, and SNMP.
Telnet The virtual terminal protocol in the TCP/IP suite of protocols, which allows users of one host t o log into a remote host and interact as norm al terminal users of that host.
Topology A network topology shows the computers and the links between them. A network layer must know the current network to pology to be able to route packets to their final des t ina tio n.
U
UDP User Datagram Protocol. A transport layer protocol in the TCP/IP suite of protocols. UDP, like TCP, us es IP for delivery; however, unlike TCP, UDP provides for exchange of datagrams without acknowledgements or guaranteed del ivery.
URL Uniform Resource Locator. A standard format for specifying the name, type and location of documents and resources on an Internet. The syntax is type://host.domain[:port]/path/filename, where type specifies the type of document or resource (e.g. http is a file on a WWW server; file is a file on an anonymous FTP server; telnet is a connection to a Telnet-based service). See WWW.
W
WAN Wide Area Network. Any physical network technology that spans large geographic distances. WANs usually operate a slower sp eeds than LANs. See LAN.
WWW World Wide Web. A hypertext-based, distributed information system based on client - server architecture. Web browsers (client applications) request documents from Web servers. Documents may contain text, graphics and audiovisual data, as well as links to other documents and services. Web servers and documents are identified by URLs (Uniform Resource Locators). See URL.
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