Do you need to provide security other than allowing specified External IP Addresses?

Is azure virtual network deployment/configuration required? If so, how many network pools?

Is ais managed azure firewall deployment required? If so, how many azure firewalls?

Is azure firewall vpn to one(1) site firewall required? If so, how many vpn site to site connections?

Is solution design and project planning required? If so, how many hours?