As shown in Figure 1, the IP address of the default gateway of a host can be viewed by issuing the ipconfig command at the command line of a Windows computer.

A tool to examine the MAC address of our computer is ipconfig /all. Note that in Figure 2, the MAC address of the computer is now displayed along with a number of details regarding the Layer 3 addressing of the device. Try using this command.

In addition, the manufacturer of the network interface in the computer can be identified through the OUI portion of the MAC address. This can be researched on the Internet.

The DNS Client service on Windows PCs optimizes the performance of DNS name resolution by storing previously resolved names in memory, as well. The ipconfig /displaydns command displays all of the cached DNS entries on a Windows computer system.