1. Ensure you are connected to a wireless network. On your system type ipconfig /all (ifconfig -a on Apple systems). The result should appear something like this: Mierosoft Windows [Version 10.0.22060.1335] (c) Microsoft Corporation. All rights reserved. C:Wserslesmasipconfig /all vindows IP Configuration 2. Find your wireless connector and jot down the IP address and the MAC address. In the example above, mine is 192.168.1.43, and 40 23-43-5B-BF-19 respectively. 3. Next, type arp-a and look at your arp table. Find an address within you network (gateway or not). Jot down their IP address and their MAC address. My arp table right now looks like this: Microsoft Windows [Version 10. 0.22000.1335 ] 4. Next, we are going to pretend we are sending an FTP (File Transfer Protocol) request to the system ID'd in step 3 . The port \# for FTP is 21 , and we will be using TCP to transport our data 5. Now we'll use the data you collected to build the message to send. First we take the data request and stuff it into the data field of a TCP segment at layer four. What would be the correct port numbers highlighted in the segment below (remember, the port number for FTP is 21 , and you'll create the dynamic port number - refer to slides for info): TCP (LAYER 4) SEGMENT 6. Next, take the TCP segment and put it in the data field of an IP packet to route across the network. What would be the correct address entries for the IP packet highlighted below? IP (LAYER 3) PACKET 7. Now that we've identified the port numbers so the destination knows what application we're working with, and we have the addresses to route the packet, we now have to build a frame and use physical addresses to actually send it through our network. We surround the data with a header and a footer to create the frame. What are the appropriate addresses to place in the frame below? 7. Now that we've identified the port numbers so the destination knows what application we're working with, and we have the addresses to route the packet, we now have to build a frame and use physical addresses to actually send it through our network. We surround the data with a header and a footer to create the frame. What are the appropriate addresses to place in the frame below? ETHERNET (LAvER 2) FRANE 8. Now the message is sent out and the destination opens, notes it's an FTP request, and answers appropriately