Chapter 6 Wireless LAN

Chapter 6 Wireless LAN

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1 Introduction to Wireless LAN

• នៅ�ក្នងុនៅ�នៅ�ន�ុននៅ��ងបានសិក្សាអំព�កា�ដំនៅ��ងប្រ�ព័ន្ធNetworkនៅ��នៅប្រ��ខែ�្សសំរា�់នៅ!"�កា�នៅ�ះដូ�Resource។ មានន័�ថាក្នងុកា�នៅ�ះដូ� Resourceឧ�ក�ណ៍ទាងំអស់ប្រ-វូខែ--ភ្ជា1 �់ នៅ2វញិនៅ2�ក។ក្នងុជំពូកនៅនះអ្នកនិងសិក្សាអំព�កា�នៅ�ះដូ�Resourceនៅ���ិនបាច់នៅប្រ��ខែ�្សនៅ7។ នៅ8ះគឺកា�នៅប្រ�� WirelessLANនៅ;��និងសិក្សាអំព�នៅ-� Wirelessវានិងនៅ!"�កា�នៅ�ះដូ�និង អាចខែចកចា�Resourceយ៉ា@ ងដូចនៅ�Aច?នៅ;��និងសិក្សាអំព�កា� ConfigureWirelessLANនិងសិក្សាអំព�HardwareComponents។

Wireless Router or Wireless Access Point

• សប្រមា�់ AccessPointគឺសុ7្ធខែ-ជាវ!ិ�សាប្រសាAដ៍ល្អប្រ�នៅស��ក្នងុកា� ExtendWirelessNetwork��ស់អ្នក។និង�្យ៉ាGងនៅ7-នៅ8ះគឺនៅដ��្ប�នៅ!"�កា�ភ្ជា1 �់នៅ2កាន់ ExitingWiredNetworkមានន័�ថាAccessPointអនុញ្ញាJ -AWirelessClientអាចនៅ!"�កា�7ំ8ក់7ំនងជា�ួ�និង WiredLAN�នឺៅដ��្ប�នៅ!"�កា� ShareBroadbandModem។

• 3Com• Apple Inc.• Asus• Belkin• Buffalo Technology• D-Link• Linksys• Motorola• Netgear• Mikrotik• Steele Inc.• TP-Link• ZyXEL Communications Corp.

Major manufacturers

3. Wireless PCMCIA Cared for Notebook Users

• អ្នកទាងំអស់គ្នា្ន ប្របាកដជាបាននៅប្រ���ចួនៅ;��នៅ� NetworkWirelessនៅ�តា�ផ្ទះ នៅ�តា� ហាង Coffeeនិងនៅ�តា�សាលានៅ�ន។ នៅ-�អ្នកទាងំអស់គ្នា្ន ខែដលនៅ!"�កា�សំគ្នាល់នៅ7ថា ?

• នៅ-� HardwareComponentsអ"�ខែដលអាចនៅអា�នៅ��ងអាចដំនៅណ� កា� WirelesslyaccessthelocalnetworkorInternet?

• ឧ�ក�ណ៍ខែដលអាចនៅអា� ClientStationមានស�្ថ-ិភ្ជាពអាចនៅ!"�កា� �ញ1ូននិង77ួល RFSignalគឺជា WirelessNIC។វា�ិនដូចជា EthernetNICនៅ7នៅប្រUះថា WirelessNICគឺមាន�ញ1ូលនៅ� ModulationTechniqueខែដលអាច�ំខែលង DataStreamនៅ2ជា RFsignal ។

• WirelessNICភ្ជាគនៅប្រច�នបានភ្ជា1 �់�កប្រសា�់ជា�ួ�និង MobileDevice,LaptopComputer។ នៅ�ក្នងុឆ្នា្ន ំ១៩៩០ WirelessNICសំរា�់ Laptopsប្រ-វូបាននៅប្រ��ជា Slotគឺប្រ�នៅZ7 PCMCIAslotនិងឯង។

Personal Computer Memory Card International Association

• PCMCIA Wireless NIC ជា�្នៅZ7ឧ�ក�ណ៍ខែដលនៅពញនិ�� នៅ��សាវាមាន��ូរាង-ូច និងងា�ប្រសលួ Install នៅ;��នៅគ

�ិននៅប្រ��ជា�ួ��្នៅZ7 Desktop Computer នៅ7គឺនៅគនៅប្រ��ជា�ួ�Computer Laptop។

4. USB Wireless Adapter• ចំនៅUះកា�ភ្ជា1 �់ Desktopនៅ2កាន់ 802.11bNetworkជំនៅ� _សដ៍

ល្អ�ំផុ-��ស់នៅលាកអ្នកគឺ USB(UniversalSerialBus)សប្រមា�់ NetworkAdapterវាមាន-ំលៃលលៃabខែ-ងា�ប្រសលួក្នងុកា�ដំ នៅ��ងយ៉ា@ ងណា�ិញចំនៅUះកំុព្យូ7័�ខែដលនៅប្រ��ប្របាស់នៅ�ប្រ�ព័ន្ធប្រ�-Aិ�-Aិកា� Window98� ឺVersionនៅប្រកា�នៅនះៗនៅលាកអ្នកប្រ-វូខែ-មានUSBportព�� Portនៅ8ះខែដ�គឺជា Hot-swappableខែដលមាន ន័�ថានៅលាកអ្នកអាចនៅ!"�កា� Plugវានៅ���ិនចាបំាច់ RestartComputerនៅ8ះនៅ7។

Configure Tenda Wireless Router.

Configure Tenda Wireless Router.

• System Status : ផ្កនៅនះគឺនៅដ��្ប�ជួ�អ្នកឱ្យ�ល់ព�Network, Service and System Status ។ អ្នកអា

“ចចុច�ូ៊-ុង Refresh" នៅដ��្ប�77ួលបានកា� updated information of the router

Setup Wizard :

• សំរា�់កា�Configure internet សំរា�់កា�នៅប្រ��ប្របាស់ មានព��្នៅZ7 គឺ setup wizard and manual

configuration.• មាន ៥ �្នៅZ7លៃន Internet connection Mood :

Static IP, Dynamic IP, PPPOE, L2TP, PPTP.

Advance Setting • Advance Setting :

– MAC Address: The device's MAC address as seen on your local network.

– IP Address: The device's IP address as seen on your local network(192.168.0.1 by default).

– Subnet Mask: It is shown the device's subnet mask here (255.255.255.0 by default)

• Advance Setting – LAN Setting – WAN Setting– MAC Address Clone – DNS Seting

LAN Setting

WAN Setting: • PPPoE: Some ISP use PPPoE (Point-to-Point Protocol over Ethernet) to

construct the Internet connections for end users. You can enquire your ISP to see if they use PPPoE. If they do, you can configure it.

• Account and Password: Enter them provided by your ISP• Service Name: Enter the service name if provided.• Connect Automatically: Connect automatically to the Internet after booting

the system or connection failure.• Connect Manually: Connect to the Internet by the user manually.• Connect on Demand: Re-establish your connection to the Internet after the

specific time (Max Idle Time). Zero means your Internet connection at all time. Otherwise, enter the minutes to be elapsed before you want to disconnect the Internet access.

• Connect on Fixed Time: Connect to the Internet during the time you fix

MAC(media access control) Address Clone

• MAC Address clone: Some Internet service providers require end-user's MAC address to access their network. This feature copies the MAC address of your network device to the router.

• MAC Address: The MAC address to be registered with your Internet service provider.

• Restore Default MAC: Restore the default hardware MAC address.

• Clone MAC: Register your PC's MAC address.

DNS Setting

Basic Setting• In this section you can only configure the wireless parameters such

as SSID and Channel.• SSID(service set identifier): the wireless network public name. The

SSID is a must to enter• SSID Broadcast: When the wireless client will search out wireless

network, they would detect the SSID broadcast around. If one is selected, the Router will broadcast its own SSID to all wireless hosts.

• Channel: Select one from 1~13 channels or AutoSelect. As far as possible select the channel which is used less for preventing signal interference.

• Extension Channel: It can be used to ensure 11N network frequency.

Security Setting

Security Setting (con)

• WEP Key(Wired Equivalent Privacy): either ASCII (5~13 ASCII characters except / , and other illegal characters. ) or Hex legal characters (10~26 Hex characters.)

• WPA/WPA2-Personal (Wi-Fi Protected Access): you can enable personal or mix mode, but you must make sure that the wireless client also supports the selected encryption method.

DHCP Server

• DHCP (Dynamic Host Configuration Protocol) is to assign an IP address to the computers on the LAN/private network. When you enable the DHCP Server, the DHCP Server will allocate automatically an unused IP address from the IP address pool to the requesting computer in premise of activating “Obtain an IP Address Automatically”. So specifying the starting and ending address of the IP Address pool is needed. The lease time is the length of the IP address lease.

DHCP Server

DHCP server List

Reboot

• Rebooting the router is to make the settings configured go into effect or to set the router again if setting failure happens

Client Configuration

�នៅ��នៅ��ល Password និង�្នៅZ7 Security ��ស់Wireless ខែដលនៅ��ងបានភ្ជា1 �់