As in our other Wireshark labs, we collect a Wireshark trace on the client PC in our home network. Figure 1: NAT trace collection scenario Figure 1 shows our Wireshark trace-collection scenario. Within the home network, the home network router trace file: NAT_home_side trace file: NAT_ISP_side provides a NAT service, as discussed in Chapter 4.
NAT Measurement Scenario In this lab, we’ll capture home network packets from a simple web ISP network NAT router request from a client PC in a home network to a server. Before beginning this lab, you’ll probably want to review the material on NAT section 4.4 in the text.1ġ. Therefore in this lab, you will use Wireshark trace files that we’ve captured for you. Also, because many students don’t have easy access to a NAT device or to two computers on which to take Wireshark measurements, this isn’t a lab that is easily done “live” by a student. Because we’re interested in capturing packets at both the input and output wides of the NAT device, we’ll need to capture packets at two locations. This lab will be different from our other Wireshark labs, where we’ve captured a trace file at a single Wireshark measurement point. In this lab, we’ll investigate the behavior of the NAT protocol. Wireshark Lab: NAT SOLUTION Supplement to Computer Networking: A Top-Down Approach, 6th ed., J.F.
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