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Glossary · 16 concepts · CCNA / CCNP / CCIE / SOC ready

Networking + cybersecurity glossary
Reviewed by a Dual CCIE

Concept-by-concept explanations for CCNA, CCNP, CCIE, cybersecurity, and AI security tracks — written by the team that runs Bangalore's largest networking + cybersecurity lab. Each entry is reviewed by Vikas Swami (Dual CCIE #22239) and tied to real CCIE-interview-grade depth.

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What is BGP and how does it work?

8 min · Intermediate · Networking Protocols

What is the OSI Model? All 7 Layers Explained for CCNA Aspirants

18 min · Beginner · Networking Fundamentals

OSPF vs EIGRP — which one to choose?

15 min · Intermediate · Networking Protocols

What is MPLS VPN? L3VPN, Route Distinguishers, VRFs, and Label Stacking

19 min · Advanced · Service Provider (MPLS, BGP, SD-WAN)

MITRE ATT&CK explained with examples

17 min · Beginner · SOC + Detection Engineering

India DPDP Act cybersecurity checklist

13 min · Intermediate · India Compliance (DPDP, CERT-In, RBI)

Browse all 16 concepts

Routing & Switching (4)

What is a BGP Route Reflector? How It Eliminates iBGP Full-Mesh Scaling Pain

15 min · Intermediate

What is a VLAN? How Layer-2 Segmentation Works on Cisco Switches

13 min · Beginner

What is BGP Path Selection? All 13 Steps of the Best Path Algorithm

19 min · Advanced

Static vs Dynamic Routing: Trade-offs, Use Cases, and Decision Framework

13 min · Intermediate

Networking Fundamentals (3)

What is DHCP? Lease Process, DORA, and Configuration Explained

19 min · Beginner

What is NAT? Static, Dynamic, and PAT Translation Explained

17 min · Beginner

What is the OSI Model? All 7 Layers Explained for CCNA Aspirants

18 min · Beginner

Networking Protocols (2)

What is BGP and how does it work?

8 min · Intermediate

OSPF vs EIGRP — which one to choose?

15 min · Intermediate

SOC + Detection Engineering (2)

How to write Sigma rules for SOC analysts

13 min · Intermediate

MITRE ATT&CK explained with examples

17 min · Beginner

Network Security (2)

What is IPsec? Tunnel vs Transport Mode, ESP, AH, and IKE Phases

15 min · Advanced

SSL vs TLS Explained: Protocol Versions, Handshake Differences, and Why TLS Won

20 min · Intermediate

India Compliance (DPDP, CERT-In, RBI) (1)

India DPDP Act cybersecurity checklist

13 min · Intermediate

Service Provider (MPLS, BGP, SD-WAN) (1)

What is MPLS VPN? L3VPN, Route Distinguishers, VRFs, and Label Stacking

19 min · Advanced

Compliance & Regulation (1)

What is ISO 27001? Certification Path, ISMS Controls, and India Implementation Guide

23 min · Intermediate

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