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CYIf you work in Cybersecurity, Cloud, DevOps, or Network Engineering, there is one layer you cannot ignore — Layer 2.
Most people focus on firewalls and perimeter security.
But many real attacks start inside the network.
Attackers exploit weaknesses like:
• Rogue DHCP servers
• ARP spoofing
• Man-in-the-middle attacks
In this hands-on lab, we simulate how these attacks happen and implement real enterprise Layer-2 protections.
What we demonstrate in this lab:
• VLAN segmentation
• Router-on-a-Stick
• DHCP DORA process
• Inter-VLAN communication
Enterprise security protections:
• DHCP Snooping
• Dynamic ARP Inspection
• IP Source Guard
• Port Security
• PortFast
Example VLAN design:
VLAN 100 — HR
VLAN 200 — SALES
VLAN 300 — FINANCE
VLAN 400 — IT
This is how real enterprise networks prevent internal attacks.
If you want to stand out as a Network Engineer or Cybersecurity Professional, build labs like this and document them.
💬 Comment “VLAN” if you want the next networking lab.
Full video:
https://youtu.be/saSJiFNxqlE?si=IpTMEKyDH3kKQWfM
#NetworkingLabs #RouterOnAStick #VLAN #NetworkEngineering #Cybersecurity CiscoNetworking CCNA NetworkEngineer ITCareer TechSkills
@cyber_novaacademy
