Lab 7.2.5 Configuring a Wireless Access Point

Step 1: Verify connectivity between the computer and the multi-function device 
a. The computer used to configure the AP should be attached to one of the multi-function device’s switch ports. 
b. On the computer, click the Start button and select Run. Type cmd and click OK or press Enter. 
c. At the command prompt, ping the multi-function device using the default IP address 192.168.1.1 or the IP that has been configured on the multi-function device’s port. Do not proceed until the ping succeeds. 
d. Write down the command used to ping the multi-function device. ping 192.168.1.1 (or whatever IP address was used) 
NOTE: If the ping is not successful, try these troubleshooting steps:
  • Check to make sure the IP address of the computer is on the 192.168.1.0 network. The computer must be on the same network as the multi-function device to be able to ping it. The DHCP service of the multi-function device is enabled by default. If the computer is configured as a DHCP client it should have a valid IP address and subnet mask. If the computer has a static IP address, it must be in on the 192.168.1.0 network and the subnet mask must be 255.255.255.0. The answer : ping 192.168.1.1 -t
  • Make sure the cable is a known-good straight-through cable. Test to verify.
  • Verify that the link light for the port where the computer is attached is lit.
  • Check whether the multi-function device has power.
  • If none of these steps correct the problem, check with your instructor.

Step 2: Log in to the multi-function device and configure the wireless network 
a. Open a web browser. In the address line, type http://ip_address, where ip_address is the IP address of the wireless router (default is 192.168.1.1). At the prompt, leave the user name textbox empty, but type the password assigned to the router. The default password is admin. Click OK. 
b. In the main menu, click on the Wireless option. 
c. In the Basic Wireless Settings window, the Network Mode shows mixed by default, because the AP supports 802.11b, g, and n wireless devices. You can use any of these standards to connect to the AP. If the wireless portion of the multi-function device is NOT being used, the network mode would be set to Disabled. Leave the default of Mixed selected. 
d. Delete the default SSID (linksys) in the Network Name (SSID) textbox. Enter a new SSID using your last name or name chosen by your instructor. SSIDs are case-sensitive. 
e. Write down the exact SSID name that you are using.  The SSID is student dependent 
f. Click on the Radio Band drop-down menu and write down the two options. Standard-20MHz Channel and Wide-40MHz Channel 
g. For a wireless network that can use 802.11b, g, or n client devices, the default is Auto. Auto allows the Wide Channel option to be chosen and gives the best performance. The Standard ChannelWide ChannelAuto selected. option is used if the wireless client devices are 802.11b or g, or both b and g. The option is used if only 802.11n client devices are being used. Leave the default of 
h. SSID Broadcast is set to enabled by default, which enables the AP to periodically send out the SSID using the wireless antenna. Any wireless devices in the area can detect this broadcast. This is how clients detect nearby wireless networks. 
i. Click on the Save Settings button. When the settings have been successfully saved, click on Continue. 
j. The AP is now configured for a wireless network with the name (SSID) that you gave it. It is important to write down this information before starting the next lab or attaching any wireless NICs to the wireless network.

Step 3: Reflection 
a. How many wireless networks do you think could be configured in one classroom? What would limit this? Answer will be student dependent, but depends on which signal power is being used, whether 802.11a, b, g, or n is being used, and how many channels are available for that particular type of wireless network.
Jawaban : 1-50 , dengam membuat password dan batasan Ip address yang bias mengakses. 
b. What do you see as a potential security problem when you broadcast your SSID from the AP?
Jawaban : Answer is student’s own opinion, but one answer is that any wireless device in the area will know
there is a wireless network there. One of the first security threats in wireless is if the intruder knows where a wireless network is located and what the SSID is. Kesulitan dalam mengkonfigurasi , jika salah konfigurasi maka tidak dapat terkoneksi

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