I do this to defang the url to prevent unintentional clicks or automatic previewing when working and reporting on security events. Sometimes the habit bleeds over.
Name constraints are an optional feature in the standards. A client can ignore the constraints and be completely standards compliant.
Should the CAs issue intermediate certs that are only secure if a client implements an optional feature?
And even if most web browsers support name constraints properly - who knows if that cheap network webcam does, or that old mail client, or that 20 year old retro PC game?
If you want to uphold the name constraints in your CA cert, mark the field as critical. At that point clients that don’t understand them should fail validation of the CA cert.
So it may have limited use-cases today if you require full compat for all clients. For example internal controlled networks like discussed in the article.
Just like you presumably already wouldn't issue LE certs when you need to support clients with ancient CA bundles.
I mean if its being hostile to your LAN then why not?
Let the hostile phones, TV's, sonos, toasters, etc live on the IOT network and your laptop, desktop, NAS and whatever else you value live on a your actual LAN.
Not defending ridiculous claims based on small sample sets, but isn't this how it's supposed to work? You run some tests and notice a pattern and develop an hypothesis, and then continue to expand the test to see if it holds true? Then other groups perform the same tests to hopefully receive the same results so that we end up with known facts. Essentially, the definition of scientific method.
Yeah, but people aren't actually that interested in the scientific method here. Criticizing things is an easy way to appear smart, and that's the main point.
Empirical research has never been about some true/false binary; that's a myth perpetuated on HN. It has always been about strength of evidence, improving models, and opening paths for future research. I've seen people dismiss case studies by decrying that their n=1, for god's sake.