Network Design «LEGIT»

Modern networks assume the perimeter is porous. Design-level security includes:

Moving away from "trusting everyone inside the building" to a model where every user and device must be continuously verified. network design

Not all data is equal. A good design prioritizes time-sensitive traffic—like Voice over IP (VoIP) or video conferencing—over standard web browsing to ensure clear communication. 3. Security by Design 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. Its sole purpose is to switch traffic as fast as possible

We are moving away from purely hardware-centric designs toward . SD-WAN allows companies to manage their network via software, automatically routing traffic over the most efficient path (e.g., using a cheap internet connection for basic apps and a private line for critical data). Additionally, "Hybrid" designs now integrate local office hardware seamlessly with cloud providers like AWS or Azure, treating the cloud as an extension of the local data centre. Conclusion

Using VLANs to isolate sensitive departments (like Finance or R&D) from the rest of the network. This prevents "lateral movement" if one device is compromised.

High availability is non-negotiable. Designers use dual-homing (connecting a switch to two upstream devices) and protocols like STP (Spanning Tree Protocol) or LACP (Link Aggregation Control Protocol) to ensure that if one cable or switch fails, the network stays live.