Question: Capturing and Identifying DHCP Packets Time Required: 30 minutes Objective: Capture the packets used to lease a DHCP address to a client. Required Tools and Equipment: Net-XX with Wireshark installed, a configured DHCP server Description: Using Wireshark and a suitable capture filter, capture the packets involved in a DHCP IP address lease. Make sure your computer is configured to get an address via DHCP, and set your computer's IP address back to its original settings when you're finished. Answer the following questions:
• What commands did you use to cause your computer to request a new address lease?
• What capture filter did you use to limit Wireshark to capturing only packets related to DHCP?
• Find the four packets involved in the DHCP lease. In the Info column of Wireshark, what's the name shown for each of the four packets?
• Find the following fields in the Transport-layer header of the first packet in the DHCP lease, and write down their values:
Source port:
Destination port:
• What's the Internetwork-layer source address and destination address in the two packets sent by the client computer? Explain.