I’ve look all over, but keeps running into same info that talks about directory level IP restriction, which usually looks something like this:
Order Deny,Allow
Deny from all
Allow from 123.123.123.123
Is it possible to have same type of access restriction tied to a page/document?
This will allow either someone from IP 127.0.0.1 or logged as a valid user. Stick it either in your config or .htaccess file.
IP Alone:
That definitely answers your question.