Learning network basics makes cybersecurity much easier. Completing the Network Fundamentals section of the MSAF course was more than just finishing a task. It marked real progress in my training.
This module focused on hands-on labs that applied theory to real situations. These are the same skills used by cybersecurity professionals in real jobs.
Grasping the Theoretical Underpinnings
I started by building a strong base through research on the OSI and TCP/IP models:
- OSI model: A 7-layer framework that explains how network communication works.
- TCP/IP model: A 4-layer model used in real-world networking and the internet.
Understanding these layers helps with:
- Finding vulnerabilities
- Analyzing traffic
- Applying security controls
Next, I studied common network hardware used in business environments:
- Hubs: Send traffic to all devices, with no filtering
- Switches: Send traffic only to the correct device
- Routers: Connect and manage different networks
- Firewalls: Control access and protect sensitive data
Putting Knowledge into Practice: Static & Dynamic Network Design
To apply what I learned, I created a network design using Draw.io for a company with 100 employees.
- Built a full network layout with PCs, switches, and servers
- Added firewalls and a DMZ for protection
- Created proper segmentation for security
Then I moved to a more advanced task using Cisco Packet Tracer. I built a dynamic network for a company with 1,000 employees.
Tasks Included
- Building WANs, LANs, and VLANs
- Configuring Access Control Lists (ACLs) and Network Address Translation (NAT)
- Setting up an IPSec VPN tunnel
- Troubleshooting configuration issues and command errors
This lab took over 10 hours and required strong focus and problem-solving.
Key Tasks Completed
- Researched OSI and TCP/IP models and their security impact
- Studied enterprise network hardware
- Designed a static network diagram
- Built a dynamic network in Packet Tracer
- Configured LANs, VLANs, ACLs, NAT, and VPNs
Note: Full lab reports and videos are available if needed.
Conclusion
Reading alone is not enough for this level of work. These labs required real hands-on effort.
I gained practical skills that apply directly to real-world environments. I also created a complete network project that can be used in my cybersecurity portfolio.
Key Takeaways
- Built hands-on experience with real network design
- Learned to configure LANs, VLANs, ACLs, NAT, and VPNs
- Improved troubleshooting and documentation skills
- Applied OSI and TCP/IP theory in real scenarios
- Created a portfolio-ready project
Ethical Disclosure
In line with my academic pledge at Mossé Cyber Security Institute (MCSI), official course solutions are not shared.
This post reflects my own work and understanding. Supporting documentation is available privately for recruiters, mentors, or collaborators.
There. Clean, direct, and readable without sounding like a textbook trying to impress itself.