Network Utility is a powerful tool available on macOS that allows users to perform a variety of network-related tasks. Although the traditional Network Utility app was deprecated in macOS Catalina, many of its functions are still accessible via Terminal and other built-in applications. This article will guide you through how to use these network utility tools effectively on macOS.

Examples:

1. Ping: This command is used to test the reachability of a host on an IP network.

   • Open Terminal.
   • Type the following command to ping a website (e.g., apple.com):

     ping apple.com

   • This will send packets to the specified address and display the time it takes to receive a response.

2. Traceroute: This command helps you determine the path packets take to reach a network host.

   • In Terminal, type:

     traceroute apple.com

   • This will display each hop along the route to the destination.

3. Netstat: This command displays network statistics and information about network connections.

   • To view all active connections, type:

     netstat -an

   • This provides a list of all active network connections and their states.

4. Ifconfig: This command is used to configure, control, and query TCP/IP network interface parameters.

   • To view your current network interfaces and their configurations, type:

     ifconfig

   • This will display information about each network interface on your system.

5. Nslookup: This command is used to query Internet domain name servers.

   • To find the IP address of a domain, type:

     nslookup apple.com

   • This will return the IP address associated with the domain name.

6. Network Diagnostics: Although not a command-line tool, macOS offers a built-in Network Diagnostics tool.

   • Go to Apple Menu > System Settings > Network.
   • Click on "Assist Me" and then "Diagnostics" to run the network diagnostic tool.

These examples illustrate how the deprecated Network Utility app's functions can still be accessed through Terminal commands on macOS. By using these tools, you can effectively manage and troubleshoot network issues on your Apple devices.