We have installed own cloud version 9.
For Authentication purpose we have enabled and configured ldap.
currently we are having users in the internal/private network and also public users, who can access from the internet.
Now we want to restrict the internal users connecting to the own cloud from the internet. And provide only to specific users/group to access from the internet.
operating systems : ubuntu 16.0.4
database : mariaDB
LDAP : openldap and windows 2008 AD
Networks : private network and one natted public network to access to owncloud.