A few years ago, there were 3 tools for diagnosing network problems: Network Utility (gone in Big Sur), Wireless Diagnostics, and Network Diagnostics (also gone). And what can networkQuality tell you about Private Relay?
networks
Enabling CFNetwork diagnostic logging now requires SIP to be disabled in macOS 13.4.
Making your network more secure using software firewalls and SSL inspection can block macOS from functioning properly.
AirPort Utility includes a free W-Fi scanner which works on any based station. Here’s how to enable and use it.
Further suggestions for setting your router up, to keep your local network safe, secure, and free from trouble.
The lights on my cable modem flash even when the network is shut down. How should I protect myself?
Sometimes connecting to hotel WiFi results in failure, because the Mac has a self-assigned IP address. Why?
What is the network address of your Mac? Is that its MAC, IPv4, or IPv6 address, how is each assigned, and how do they relate to one another?
Models used so far to explain viral events lack explanatory or predictive value. It is time to turn to Catastrophe Theory.
The Eclectic Light Company 