Secure segmentation is defined as implementing methods that allow for secure communication between various levels of segmented environments. These environments typically involve 4 basic segment groups:
Outside (Trust no one)
Services (Trust limited to defined segmentation lines)
Internal (Trust limited to defined group)
External users (Trust limited to defined group)
The methods for securing these segments may include but are not limited to firewall and switch/router configurations and router/switch ACLs.
Topic
EA: Security Architecture
Security