Infosec glossary entry

VXLAN

VXLAN:
Virtual eXtensible LAN

[...] is an encapsulation protocol that enables VLANs ...] to be stretched across subnets and geographic distances. VLANs are typically restricted to layer 2 network areas and are not able to include members from other networks that are accessible only through a router portal. Additionally, VXLAN allows for up to 16 million virtual networks to be created, whereas traditional VLANs are limited to only 4,096. VXLAN can be used as a means to implement microsegmentation without limiting segments to local entities only. VXLAN is defined in RFC 7348. (Chapple, 20210616)

Chapple, M., Stewart, J. M., Gibson, D. (20210616). (ISC)2 CISSP Certified Information Systems Security Professional Official Study Guide, 9th Edition. [[VitalSource Bookshelf version]]. Retrieved from vbk://9781119786245

By jean-christoph

April 11, 2023

architecture

this might interest you as well

Lessons from Sun Tzu’s “The Art of War” in Cybersecurity: Timeless Wisdom or Outdated Tactics?

Introduction Sun Tzu’s "The Art of War" is a legendary strategic treatise written more than 2,500 years ago. Its enduring principles of warfare strategy have transcended military boundaries, influencing disciplines from business management to competitive sports. In today’s digital age, its relevance is increasingly apparent in the cybersecurity landscape, particularly for CISOs of medium-sized enterprises,

Read More

Ransomware Resilience Starts in the Mind: Overcoming Cognitive Biases and Decision-Making Errors in Cybersecurity

Why We Keep Losing Despite Stronger Security Controls Over the past three years, businesses have almost doubled their confidence in cybersecurity—rising from 32% in 2021 to 54% in 2024 (The Global Cost of Ransomware Study, 2025). Despite this, ransomware’s impact has only grown: 40% of affected companies suffered significant revenue losses, 58% experienced operational downtime,

Read More

AI Cyber Security 2025: Key Threats and Essential Strategies for Your Business

Artificial Intelligence is transforming businesses and industries worldwide, but with this transformation comes unprecedented challenges. The recent launch of Cisco AI Defense, a specialized AI security solution, highlights the urgency of securing AI applications. According to Cisco, only 29% of enterprises feel fully prepared to detect and prevent unauthorized manipulations of AI systems. This low

Read More