Remote access to production infrastructure (death to the VPN)
Pure Zero Trust is just as ridiculous as using Pure-VPN-around-a-garden. The first gives an attacker unlimited retries, and the second gives an attacker full system access once they breach the outer wall.The correct solution is somewhere in the middle: block everything by default to get you to an inner courtyard, where the zero trust model is deployed... (which ironically he suggests by deploying port knocking (port knocking is a bad idea (TCP/UDP ports are sent in the clear and the "key" is never rotated)))The best model is probably "block everything" by default, then allow access to the inner courtyard via a VPN, where then the Zero Trust model is deployed. You remove the ability for an attacker to have unlimited retries, but access to resources still requires individual authentication.