The first tab, Info, provides information about your own computer, offering a drop-down menu of all your network interfaces-for example, if you have both wired ethernet and Wi-Fi connections. When you first launch Network Utility, you’ll see a single window with a variety of tabs, each of which offers different information. If you want to go under the hood, Apple includes a suite of tools on your Mac to help you troubleshoot networking issues they’re all included in the Network Utility app, which you can find in System/Library/CoreServices/Applications-though it’s probably easier to simply type “Network Utility” into Spotlight. We take networking for granted these days, but it’s still a complicated beast.
