Blog

Guides, tutorials, and tips for network diagnostics on macOS.

Use network diagnostic tools to find out why your Mac's internet is slow. A systematic approach using ping, traceroute, and speed tests.

Learn what traceroute does and how to run one on your Mac without touching the command line. Includes GUI options and how to read the results.

A look at what network diagnostic capabilities macOS provides out of the box and what you'll need third-party tools to accomplish.

Compare the different ways to perform DNS lookups on macOS. Learn when to use nslookup, dig, host, or a GUI tool.

Learn how to check whether a specific port is open on your Mac or a remote server using Terminal commands and GUI tools.

Network Utility is gone from macOS. Learn why Apple removed it and what alternatives exist for ping, traceroute, DNS lookup, and port scanning.