What ports are needed for kubectl to communicate with OKE?

Summary

For a local kubectl, what ports are needed for communication with OKE - is it only 6443?

Content

My Cluster Details lists my "Kubernetes address" with port 6443, but I remember seeing port 12250 somewhere. Not a lot of info in the documentation about this. My workplace restricts outbound almost everything except usual suspects 80, 443, and 22, maybe others. 

So my question is, do I need only 6443? OCI CLI seems ok with just 443.

 

thanks!

 

Version

OKE 1.18.10