Lab 7.3.5 Configuring Wireless Security

Lab 7.3.5 Configuring Wireless Security
Objectives
• Create a security plan for a home network.
• Configure the wireless access point (AP) portion of a multi-function device using security best practices.

Background / Preparation
A well-planned security implementation is critical to the safety of a wireless network. This lab goes over the steps that must be taken to ensure the safety of the network using the following scenario. You have just purchased a Linksys WRT300N wireless router, and you want to set up a small network in your home. You selected this router because the IEEE 802.11n specification claims that it has 12 times the speed of an 802.11g and 4 times the range. Because the 802.11n uses 2.4 GHz, it is backward compatible with both the 802.11b and 802.11g and uses MIMO (multiple-in, multiple-out) technology.
You should enable security mechanisms before connecting your multi-function device to the Internet or any wired network. You should also change the default values provided, because they are well-known values that are easily obtainable on the Internet.

The following resources are required:
• Windows-based computer
• Linksys WRT300N
• Straight-through Ethernet cable

Step 1: Plan the security for your home network
a. List at least six security best practices that you should implement to secure your multi-function device and wireless network.
Jawaban
1) Tambahkan password untuk akses wireless dan gunakan password WPA2 Encryption.
2) Jangan gunakan nama SSID dengan nama anda.
3) Aktifkan alamat MAC spoofing untuk mengatasi alamat MAC yang salah dari router anda.
4) Aktifkan Allow MAC Address only untuk memastikan bahwa hanya mesin yang MAC alamat yang ditentukan dapat terhubung ke wireless.
5) Sebaiknya gunakan LAN jika kita melakukan proses download misalnya pada malam hari dan matikan wireless.
6) Aktifkan firewall router jarngan wireless Anda.

b. Describe what the security risk is for each item.
1) Akan terjadi kemungkinan pengaksesan jaringan oleh pihak yang tidak berhak


Step 2: Connect a computer to the multi-function device and log in to the web-based utility
a. Connect your computer (Ethernet NIC) to the multi-function device (port 1 on the Linksys WRT300N) by using a straight-through cable.
b. The default IP address of the Linksys WRT300N is 192.168.1.1, and the default subnet mask is 255.255.255.0. The computer and Linksys device must be on the same network to communicate with each other. Change the IP address of the computer to 192.168.1.2, and verify that the subnet mask is 255.255.255.0. Enter the internal address of the Linksys device (192.168.1.1) as the default gateway.
Do this by clicking, Start > Control Panel > Network Connections. Right click on the wireless connection and choose Properties. Select the Internet Protocol (TCP/IP) and enter the addresses as shown below.

c. Open a web browser, such as Internet Explorer, Netscape, or Firefox and enter the default IP address of the Linksys device (192.168.1.1) into the address field and press Enter.

d. A screen appears, requesting your user name and password.
b. Leave the User name field blank and enter admin for the password. It is the default password on the Linksys device. Click OK. Remember that passwords are case-sensitive.
c. As you make the necessary changes on the Linksys device, click Save Settings on each screen to save the changes or click Cancel Changes to keep the default settings.