Building a Real-World Campus Network | Dual ISP BGP, DMZ & Firewall Design (GNS3 Lab)

In this video, I walk through the design, implementation, and validation of a real-world campus network built in GNS3, inspired by enterprise networking best practices.

This lab demonstrates how a small but security-focused campus can use dual ISP connectivity with BGP, strict routing policy, and firewall-segmented trust zones to achieve stability, control, and scalability.

🔧 What’s covered in this video:

Dual ISP connectivity using BGP (default-route only policy)

Campus segmentation with VLANs (10/20/30/40)

A dedicated DMZ protected by Cisco ASAv

Firewall ACLs, NAT (PAT & Identity NAT) and security zoning

Campus ↔ DMZ traffic control and validation

Real troubleshooting scenarios and fixes

End-to-end testing: routing, NAT, DNS, and internet access

This project reflects real enterprise design decisions, not just textbook labs, and is fully documented for professional and academic use.

📁 Full documentation & configs:
https://github.com/bahdleen/maxwell-c...

🎓 Who this video is for:

Networking students

Cybersecurity learners

CCNA / CCNP candidates

Anyone building a serious lab or portfolio project

If you found this useful, like, subscribe, and share — more enterprise-grade labs coming.