BGP Fundamentals: How the Internet Routes Itself
Understand autonomous systems, path selection, and why BGP is both the backbone and a frequent source of outages.
Routing
Network Engineering & Security
Explore the infrastructure that powers the internet
In-depth articles on routing, protocols, cloud networking, and cybersecurity — written for engineers who build and defend networks.
26Articles
6Topics
9Authors
99.99%Uptime SLA
Zero TrustArchitecture
Browse by Topic
Latest Articles
Showing 26 articles
Routing
OSPF Area Design for Enterprise Networks
Partition large OSPF domains into areas and stub types to keep the link-state database manageable.
Routing
MPLS L3VPN Basics for Service Provider Engineers
How label switching separates customer routing tables on shared provider cores.
Routing
VLAN Trunking and Spanning Tree Best Practices
Design trunk links, native VLAN policy, and STP root placement for stable layer-2 domains.
Security
Building a Zero Trust Network from Scratch
Replace perimeter-based security with identity-centric access across hybrid environments.
Security
Firewall Rule Hygiene: Audit and Optimize
Bloated ACLs slow troubleshooting and create security gaps — here is a systematic cleanup approach.
Security
IPsec Site-to-Site VPN Design
IKE phases, cipher selection, and redundancy patterns for encrypted WAN links.
Security
802.1X and RADIUS for Enterprise WLAN Access
Certificate and credential-based authentication for wireless and wired ports.
Cloud
AWS VPC Peering vs. Transit Gateway
Choose the right connectivity pattern for multi-VPC cloud architectures.
Cloud
Kubernetes Networking: CNI Plugins Explained
Compare Calico, Cilium, and Flannel for pod networking and policy enforcement.
Cloud
Azure Hub-Spoke Network Topology
Centralize shared services, firewalls, and VPN gateways in a hub VNet.
Cloud
Hybrid Cloud DNS and Private Resolver Patterns
Resolve on-premises and cloud names consistently across split-horizon zones.
Protocols
TCP Three-Way Handshake Deep Dive
SYN, SYN-ACK, ACK — and what happens when things go wrong.
Protocols
DNS Security: DNSSEC and Encrypted DNS
Protect the naming layer with validation and encrypted transport.
Protocols
IPv6 Dual-Stack Migration Planning
Practical steps for introducing IPv6 alongside IPv4 without service disruption.
Protocols
QUIC and HTTP/3 for Network Engineers
Why UDP-based transport changes load balancing, firewalls, and observability.
Wireless
Wi-Fi 7 (802.11be): What Admins Need to Know
320 MHz channels, multi-link operation, and deployment considerations.
Wireless
Wireless Site Surveys: Predictive vs. Active
RF planning prevents dead zones and costly post-install fixes.
Wireless
Optimizing WLAN Roaming for Voice and Video
Tune thresholds, band steering, and 802.11k/v/r for seamless mobility.
Monitoring
SNMP Monitoring: v2c vs. v3 in Production
Poll counters, walk MIBs, and receive traps — securely.
Monitoring
NetFlow Analysis for Traffic Engineering
Identify top talkers, detect anomalies, and right-size WAN links.
Monitoring
Synthetic Monitoring for WAN and SaaS Paths
Proactive probes detect brownouts before users open tickets.
Routing
SD-WAN Architecture for Multi-Site Enterprises
Overlay networks, path selection, and centralized policy management.
Cloud
Network Automation with Ansible
Idempotent playbooks for configuration backup, compliance, and rollout.
Monitoring
Packet Capture with Wireshark: Practical Workflows
Filters, TCP stream analysis, and SPAN port design for effective captures.
Protocols
QoS: DSCP Marking and Queueing Strategy
Prioritize voice, video, and business-critical apps end to end.
Editor's Pick
Building a Zero Trust Network from Scratch
Replace perimeter-based security with identity-centric access across hybrid environments.
Read Article →About NetPulse
NetPulse is a curated library of network engineering articles covering BGP, zero trust, cloud connectivity, wireless, and operations. Every article is a standalone page you can bookmark, share, or read offline.
- Protocol deep-dives with real-world context
- Troubleshooting and design guides
- Fully static — no tracking, no external assets
