Network Utility shows information about each of your network connections, including the hardware address of the interface, the IP addresses assigned to it, its speed and status, a count of data packets sent and received, and a count of transmission errors and collisions.
These other tools are also included in Network Utility:
- Netstat: Examine your computer’s network routing tables by viewing a detailed summary of packet types sent and received using common network protocols.
- Ping: Test whether your computer can communicate with a computer or other device at a specific network address.
- Lookup: View information provided by your Domain Name System (DNS) server.
- Traceroute: Follow the path a message takes as it travels through the network from computer to computer.
- Whois: Enter a domain address to look up its "whois" information from a whois server.
- Finger: Enter a user name and domain address to use the Finger protocol to get information about the user.
- Port Scan: Enter an Internet or IP address to scan for open TCP ports.
Find Network Utility using Spotlight or in these places on your Mac:
- In OS X Mavericks and later, Network Utility is in /System/Library/CoreServices/Applications.
- In OS X Mountain Lion, Lion, and Snow Leopard, Network Utility is in the Utilities folder of your Applications folder.
To learn more, open Network Utility and choose Help > Network Utility Help from the menu bar. You can also check for Wi-Fi issues using your Mac and use Network Diagnostics to help solve Internet connection problems.