I also used to work with on-premise installs of Kubernetes and their “security” postures prevented any in-bound access. It was a painful process of requesting access, getting on a zoom call and then controlling their screen via a Windows client and putty. It’s was beyond painful and frustrating. I tried to pitch using a tool like Twingate which doesn’t open any inbound ports, can be locked down very tight using SSO, 2fa, access control rules, and IP limiting but to no avail. They were stuck in their Windows based IT mentally.

At least they didn't ask you to TeamViewer into a Windows Server 2012 box and open Event Viewer..