I received a question from a customer who wanted, for security reasons, to remove the ESXi web welcome screen. This is the screen that enables you to download the vSphere Client and RCLI and even browse datastores.
I’ve tested it and removing (or renaming) the following file will lead to a blank page when the ESXi host is accessed via http(s):
/usr/lib/vmware/hostd/docroot/index.html
<edit>
William Lam created another work around which is definitely a more elegant solution: Remove the ESXi web welcome screen.
</edit>