Modern networks assume the perimeter is porous. Design-level security includes:
The "interchange." This layer implements policies, routing between VLANs (Virtual Local Area Networks), and security filtering. It bridges the high-speed core with the user-facing access layer. network design
Implementing Next-Generation Firewalls (NGFW) and Intrusion Prevention Systems (IPS) at the boundary between the internal network and the internet. 4. Modern Evolution: SD-WAN and Cloud Modern networks assume the perimeter is porous
The "highway" of the network. Its sole purpose is to switch traffic as fast as possible. It avoids complex packet manipulation to maintain maximum speed. network design