Technology and Support - Cisco Community
CCNA Discovery
Networking for Home and Small Businesses
Skills Based Assessment
Objective(s)
• Plan a small business network that incorporates both wired and wireless hosts.
• Plan and implement basic security features.
• Configure a Linksys multi-function device to support the planned network.
Scenario
You have been asked to plan and implement a network for a small real estate company. The office consists of a single receptionist and one salesperson. The receptionist’s computer is a stationary device and must have a reliable connection to the Internet to enable the exchange of information with clients. The salesperson uses a wireless-enabled laptop when traveling and wishes to use the same computer wirelessly in the office. Since the salesperson uses the computer to submit sales information that contains personal information, security on the wireless link is extremely important.
After discussions with the receptionist and salesperson, it was decided that the following considerations must be taken into account in the network design.
• The receptionist’s computer will connect directly to one of the switch ports on the Linksys multi-function device. It will be assigned a static IP address.
• The salesperson’s computer will connect wirelessly to the Linksys multi-function device and obtain its IP address via DHCP.
• For security reasons the default settings on the Linksys device will be changed and the wireless security features will be implemented.
• The receptionist’s computer will eventually house the company website so all requests from the outside network for web and ftp services should be forwarded to this machine.
• The WAN interface of the Linksys multi-function device will be assigned a static IP address from the ISP.
Step 1: Wire the devices based on your solution.
Connect the WAN interface of the Linksys multi-function device to a server with a static IP of 220.169.2.80 to simulate an ISP. The server should have HTTP capabilities.
Step 2: Configure the Linksys multi-function device.
a. Connect to the Linksys multi-function device and change the admin password to password.
b. Set a static IP address and subnet mask on the Linksys WAN interface as supplied by your instructor. (209.165.201.10)
c. Activate DHCP on the LAN interface of the Linksys device and create a pool that will deliver 25 addresses starting at 192.168.1.150
d. Change the default SSID to your full name.
Step 3: Configure the wired host.
Set a static IP on the receptionist’s machine of 192.168.1.1 with a subnet mask of 255.255.255.0 and an appropriate default gateway.
Step 4: Configure the wireless host.
a. Create a profile that will enable you to associate with the Linksys multi-function device.
b. Configure the wireless host to use the SSID (the same as you configured on the Linksys multi-function device).
c. Configure the wireless client to obtain an IP address via DHCP.
Step 5: Test connectivity.
Verify connectivity by pinging from the:
• Linksys multi-function device to ISP gateway
• Wired host to LAN gateway
• Wired host to ISP gateway
• Wireless host to LAN gateway
• Wireless host to ISP gateway
Troubleshoot as necessary.
Note: Do not complete step 6 until you have connectivity from the wireless host to the ISP gateway (220.169.2.80).
Step 6: Configure wireless security.
a. Disable SSID broadcast.
b. Configure a static WEP key of 1A2B3C4E5F on both the Linksys device and the client.
c. Enable MAC address filtering to allow only your wireless client to connect to the network.
d. Disassociate from the wireless network and then re-associate to ensure that the wireless security features are in use.
e. Test connectivity by pinging from the:
• Wireless host to LAN gateway
• Wireless host to ISP gateway
Step 7: Configure port forwarding (optional)
The receptionist’s machine will be used to house the company web server. Web and FTP access to this machine from the outside world must be enabled. Enable port forwarding on the Linksys device so that any requests for web or FTP access made to the IP address of the WAN interface will be directed to the receptionist’s machine.
Step 8: Back-up the final Linksys configuration.
Copy the final Linksys device configuration file to the wired host (receptionist’s machine) and submit it to your instructor.
Step 9: Documentation
Fill in the following table with the IP addresses, subnet masks, and gateway information for the Linksys interfaces, the wired and the wireless hosts.
|Device |IP Address |Subnet Mask |Gateway |
|Linksys WAN interface | | | |
|Linksys LAN interface | | | |
|DHCP address range | | | |
|Wireless host | | | |
|Wired host | | | |
In the space provided here, draw a physical network diagram showing all network devices, PCs, and cabling. Identify all devices and interfaces according to the interface chart above and indicate the IP address and subnet mask for each interface, based on the entries from the previous steps.
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