How to give access to the site only on the local network?

Question

Apache HTTP Server

Actually the whole question is in the title, but it needs to be supplemented. Is it possible to make it so that access to the site is only from the local network, but data could be sent from the site.
Let's say there is a local database for "secret" and not very drawings. This database can only be viewed in the office itself, and access from outside should be closed, but also not very secret drawings must be sent (CURL) to an external server for public access. wamp server.

Answer 1

.htacces
Order deny,allow
deny from all
# Space-separated list of IPs from which access is allowed or subnet 192.168.0.*
Allow from 194.111.70.48 194.78.47.128