-------------------------------------------- Lab 3 Answer Sheet Wireless Net Setup and Configuration Due in class on January 31, 2007 Applied Networks and Security (IT 263 801) CSTC 202, Wednesdays, 5:45 p.m. to 9:00 p.m. January 3, 2007 to March 14, 2007 -------------------------------------------- Student Name: In this lab you will: 1. Set up a wired workstation and a wireless workstation. 2. Do file sharing between workstations 3. Test connectivity to the outside world 4. Examine packet traces to understand network operations Part 1: Read The Friendly Manual (RTFM) 1. The Linksys/Cisco WRV54G SOHO switch/router Users Guide is available under Course Documents on the DLweb siteand the course home page at: http://condor.depaul.edu/~jkristof/it263/WRV54G_ug.pdf. There will also be a copy in the lab. 2. The following parts of the manual contain information pertinent to this lab: a. Wireless Connection to a PC : Pages 12 13. b. The Wireless Tab : Pages 27 - 28. c. Appendix B: Wireless Security: Pages 64 - 70. Part 2: Connect Wired Network 1. Get the WRV54G router and patch cords from the Lab Assistant. BE SURE that you attach the antenna to the router. 2. Connect the RIGHT PC workstation using Ethernet, power up and connect the Internet connection of the router into the DePaul network as in the prior lab assignment. 3. Do not connect the LEFT workstation (with the wireless card) yet. Part 3: Determine your workstation group number 1. There are 3 groups of 2 workstations in the lab used for IT 263 lab exercises. In the instructions below, I will use the letter X to indicate which workstation group, where: a. If your workstations are labeled WLAN 1 and WLAN 2 then X = 1. b. If your workstations are labeled WLAN 3 and WLAN 4 then X = 2. c. If your workstations are labeled WLAN 5 and WLAN 6 then X = 3. Part 4: Set up an Open Wireless Network with no WEP 1. Open up Internet Explorer, go to http://192.168.1.1 to access the router configuration. Login as user admin, password admin. 2. Under Wireless settings, set up a Mixed mode network with SSID basic-X (where X is your workstation group number from Part 3 above), and SSID broadcast. 3. Under Wireless Security settings, make sure the Security Mode is disabled. Save the settings. 4. Power up the LEFT workstation, access the wireless connection settings under Network Connections, wait until the open wireless network with SSID basic-X appears and then connect to it. 5. Enter in the Worksheet the IP address and the MAC address of the wireless interface of the LEFT workstation. You may use ipconfig /all in a Command Prompt Window to get this information. 6. Try to ping the RIGHT workstation. If it works, then start up Wireshark/Ethereal, start capture of the wireless adapter, execute the same ping again, stop capture. Now do the following: Using the packets captured by Wireshark/Ethereal, enter in the Worksheet the Destination MAC and Destination IP addresses you see in the Ping Request Messages. Using the packets captured by Wireshark/Ethereal, enter in the Worksheet the Source MAC and Source IP addresses you see in the Ping Request Messages. While the Wireshark/Ethereal window is active, type ALT-PrintScreen to capture the Wireshark/Ethereal window, then Paste this window capture into your Worksheet (CTRL-V in MS Word). Part 5: Check External Connectivity 1. On the LEFT workstation, open a command window and execute the command ping 140.192.34.105. If it works, then start up Wireshark/Ethereal, start capture, execute the same ping again, stop capture. Now, while the Wireshark/Ethereal window is active, type ALT-PrintScreen to capture the Wireshark/Ethereal window, then Paste this window capture into your Worksheet (CTRL-V in MS Word). Part 6: Set up WEP encrypted wireless connection 1. On the router management, under Wireless settings, set up a Mixed mode network with SSID secure-X (where X is your workstation group from Part 3 above), and SSID broadcast enabled. 2. Under the Wireless Security settings, set the Security Mode to 64-bit WEP and choose a 10-digit hex key and enter it (for example, you could use 123456ABCD. Enter this key value in the lab Worksheet. Save the settings. 3. On LEFT workstation, wait for 60 seconds, refresh the network list in the wireless connection settings, and connect to the wireless network with SSID secure-X. Type in the same 10-digit hex WEP code used on the router when prompted. 4. Try to ping the RIGHT workstation and external address 140.192.34.105. Part 7: Show Lab Assistant and Clean up 1. Show a lab assistant that you can successfully ping another workstation from the left workstation with 64-bit WEP enabled. 2. Go back, reset the router Wireless settings to SSID linksys-g and no WEP. 3. Ask lab assistant to check your name off for Lab #3 Your NAME: QUESTIONS TO ANSWER 1. What values are the following: a. IP address of your wireless interface on the LEFT workstation = b. Is this wireless IP address a static IP address or dynamically assigned IP address? c. Ethernet MAC address of your wireless interface on the LEFT workstation = 2. When you ping to the RIGHT workstation, what values are the following: a. Destination MAC address in Echo (ping) request messages = b. Destination IP address in Echo (ping) request messages = c. Source MAC address in Echo (ping) request messages = d. Source IP address in Echo (ping) request messages = 3.Your 10-digit WEP Key #1 (hex) = SCREEN CAPTURES: 1. Paste first captured Wireshark/Ethereal screen here (ping between workstations): 2. Paste second captured Wireshark/Ethereal screen here (ping to external host):