Cisco SD-WAN vs Traditional VPN: What to Tell the Customer
Architecture, performance, security, and cost comparison of Cisco SD-WAN vs traditional IPsec VPN — with migration paths, ROI talking points, and customer …
Posts tagged: Networking
BGP Hijacking: How Attackers Reroute the Internet Itself
Deep dive into BGP hijacking mechanics, real incidents including the 2018 AWS Route 53 attack, RPKI/ROA validation, BGPStream monitoring, and prefix filtering …
DNS Hijacking: Redirecting Your Traffic Without You Knowing
Deep dive into DNS hijacking attack types, real APT campaigns, detection techniques using dig/DNSSEC, and defenses including DNS-over-HTTPS and CAA records.
Cisco ISE Guest Portal Setup: Self-Registration, Sponsored, and Hotspot
Complete guide to configuring Cisco ISE guest portals — self-registration, sponsored access, and hotspot. Covers portal creation, sponsor portal setup, Central …
Cisco ISE Active Directory Integration: Complete Configuration Guide
Step-by-step guide to joining Cisco ISE to Active Directory, configuring AD as an identity store, mapping AD groups to ISE policy elements, and troubleshooting …
RADIUS Load Balancing for Cisco ISE: The Complete Guide
A full breakdown of RADIUS load balancing for Cisco ISE — PSNs, VIPs, session persistence, SNAT pitfalls, health probes, CoA behavior, and cloud LB …
CompTIA Network+ (N10-009) Objective 1.3: Cloud Concepts & Connectivity Explained
A full breakdown of CompTIA Network+ Objective 1.3 — IaaS, PaaS, SaaS, public/private/hybrid cloud, deployment models, VPN, SD-WAN, MPLS, and connectivity …
CompTIA Network+ (N10-009) Objective 1.2: Networking Appliances Explained
A full breakdown of CompTIA Network+ Objective 1.2 — routers, switches, firewalls, IDS/IPS, load balancers, proxy servers, WAPs, and more. Everything you need …
CCNA 200-301: How to Build a Home Lab and Study Without Buying Cisco Hardware
A hands-on guide to passing the Cisco CCNA 200-301 exam using free and low-cost lab tools — GNS3, Cisco Packet Tracer, and EVE-NG — with real labs for routing, …
CompTIA Network+ (N10-009) Objective 1.1: OSI Model All 7 Layers Explained
A full breakdown of CompTIA Network+ Objective 1.1 — the OSI model, all 7 layers, data encapsulation, TCP flags, MTU, and how it all ties together for the exam.