Using Lookup, Ping, and Traceroute to work out why you can’t connect to a website. Is your ISP blocking it, perhaps?
connection
How can I investigate frequent errors when browsing of “Can’t find the server”?
When accessing iCloud over an unreliable Internet connection, mail transfers sometimes do not work properly.
My router drops its connection several times a day, and I have to power it off and back on again to restore the connection. Why?
Why is it a fiddle to get my MacBook to work properly with a projector?
Disconnection of my broadband service coincides with entries recording “LCP down”. What do those mean, and how can I fix them?
In planning my migration from an old MacBook to a new Mac, am I right to suppose that Ethernet is the best way to connect the systems?
The Eclectic Light Company 