> I don't know if more opaque systems exist that wouldn't give you any access like that As long as there is there is "server reimplementation", i.e. private re

> I don't know if more opaque systems exist that wouldn't give you any access like that As long as there is there is "server reimplementation", i.e. private registries available, one can always hack together a solution out of self signed CA, DNS and routing to replace "the server" with local registry.