Deepdive

In this episode of DeepDive, XatusBetaZx17 breaks down how to lock down your network at the edge—covering port security on switches and 802.1X authentication for wired and wireless access. You’ll learn best practices for configuring port limits and MAC-based restrictions, see how authentication protocols grant or deny network access, and discover how these controls fit into a larger defense-in-depth strategy.Resources & Links:

• Security Best Practices in Catalyst Campus Switches (Cisco PDF)
https://www.cisco.com/c/dam/global/fr_ca/assets/presentations/Security/Security_pratices_in_ethernet_Switched_networks.pdf Cisco
• What Is 802.1X? How Does It Work? (SecureW2)
https://www.securew2.com/solutions/802-1x SecureW2
• Choosing the Right Flavor of 802.1X (TechTarget)
https://www.techtarget.com/searchnetworking/feature/Choosing-the-right-flavor-of-8021X

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In this premiere of DeepDive, XatusBetaZx17 explores the network attack surface—all the places an adversary might exploit to breach your systems. We’ll define the attack surface, walk through vulnerabilities at each of the OSI layers, compare external vs. internal risks, and lay out a defense-in-depth blueprint for protecting your network. Whether you’re building your first home lab or architecting enterprise security, you’ll come away with concrete steps to shrink your attack surface.

Resources & Links:

• Understanding Attack Surfaces (Blog

https://www.cloudflare.com/learning/security/what-is-an-attack-surface/

• Defense-in-Depth Strategies (Whitepaper

https://www.paloaltonetworks.com/cyberpedia/what-is-attack-surface-management

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