// CATEGORY: NETWORKING

Explore VLAN fundamentals, including the IEEE 802.1Q standard, VLAN tagging, and the critical distinctions between access and trunk ports. This …

Learn the basics of Next-Generation Firewalls and PAN-OS, understanding their role in modern cybersecurity.

An introduction to the basics of networking, including how devices communicate and the role of protocols like TCP/IP and the OSI model.

Dive into the fundamental principles and philosophy behind Zero Trust Security, understanding why 'never trust, always verify' is crucial for modern …

Explore how reverse proxies and API gateways are fundamental for scaling and securing modern distributed systems, including their application in …

Explore advanced VLAN concepts including Private VLANs (PVLANs) for enhanced security, dynamic VLAN protocols like VTP and GVRP, and specialized Voice …

Learn how to access and configure a Palo Alto NGFW for initial setup and basic security configuration.

Learn the fundamentals of subnetting, why it's essential for network efficiency and security.

Learn how to implement, secure, automate, troubleshoot, and optimize QinQ deployments for robust provider networks.

Learn about DNS, the internet's address book that translates domain names to IP addresses.

Learn how to use security zones and interface types in Palo Alto Networks Next-Generation Firewalls for a secure network setup.

Explore how Zero Trust principles extend to securing every type of device—endpoints, workloads, and IoT—by verifying explicitly, assessing posture, …

Explore advanced VLAN concepts in the data center, including VXLAN for scalable Layer 2 overlays, EVPN as a robust control plane, and Data Center …

Learn the basics of firewalls, their functions, and how to configure them on popular operating systems.

Explains the core concepts and packet processing flow of Palo Alto Networks firewalls, essential for network security.

Master micro-segmentation, a core Zero Trust principle, to enhance network security by isolating workloads and limiting lateral movement beyond …

Master networking and port mapping for Linux containers on your Mac using Apple's container CLI. Learn to expose container services to your host for …

Learn how to configure VLANs on Cisco, Juniper, and Arista devices with step-by-step instructions and practical examples.

Learn how to configure firewall rules across Linux, Windows, and macOS effectively.

Learn how to create and apply security policies on Palo Alto Networks Next-Generation Firewalls, leveraging App-ID for granular control.

Learn how to establish secure and isolated inter-service networking for your Docker Compose applications, ensuring services communicate safely and …

This chapter provides a comprehensive guide to automating VLAN provisioning using Ansible. Learn core concepts, multi-vendor configurations (Cisco, …

Explore advanced DNS concepts, including zones, security, and troubleshooting strategies.

Learn how to configure Network Address Translation (NAT) on Palo Alto Networks firewalls for efficient IP address usage and enhanced security.

Learn the fundamentals of Docker networking, including how containers communicate and expose services to the outside world.

Dive into iOS networking! Learn how to fetch data from APIs using URLSession, decode JSON with Codable, and handle asynchronous operations with …

Explore dynamic VLAN management using Python and the Nornir automation framework, covering multi-vendor configuration, security, troubleshooting, and …

Learn how to use App-ID for application-aware security on Palo Alto Networks Firewalls.

Learn to analyze network traffic with Wireshark, essential for troubleshooting and cybersecurity.

Learn how to design and implement a Zero Trust architecture through a practical, phased strategy, focusing on identity, devices, networks, and data.

Dive into advanced networking with Apple's container tools. Learn to create custom container networks, enable DNS-based service discovery, and manage …

Explore Infrastructure as Code (IaC) for VLAN management using Terraform across cloud environments (AWS, Azure) and on-premises networks. This chapter …

Learn the essentials of network monitoring, including performance optimization, security threat detection, and troubleshooting techniques using tools …

Learn how User-ID enhances Palo Alto Networks firewalls with user-aware security policies.

Explore the critical role of continuous monitoring, intelligent automation, and proactive threat intelligence in maintaining and enforcing a dynamic …

Dive deep into Testcontainers' advanced networking features, including container linking, custom networks, and Docker Compose integration, with …

Explore comprehensive VLAN security best practices, identify common threat vectors, and implement robust mitigation strategies for enterprise networks …

Learn advanced firewall architectures and best practices for resilient network security.

Learn how to configure and use Content-ID for threat prevention and data filtering in Palo Alto Networks Next-Gen Firewalls.

Explore VLAN hopping attacks like switch spoofing and double tagging, and learn robust multi-vendor countermeasures and best practices for securing …

Learn advanced packet analysis techniques to troubleshoot network issues and hunt for malicious activity.

Learn how to configure SSL decryption on a Palo Alto Networks firewall to enhance security and unmask encrypted threats.

Explore Zero Trust and micro-segmentation architectures, leveraging VLANs and VXLAN for enhanced security and granular network isolation in modern …

Learn how to secure web traffic using HTTP, HTTPS, and SSL/TLS with Nginx and Let's Encrypt.

Learn how to configure Site-to-Site and Remote Access VPNs on Palo Alto Networks firewalls using PAN-OS 11.1.

Learn how to continuously improve and adapt your Zero Trust security architecture, focusing on monitoring, automation, threat intelligence, and future …

Explore advanced VLAN access control mechanisms: Access Control Lists (ACLs) for granular packet filtering, MACsec (802.1AE) for Layer 2 encryption, …

Learn how to configure Palo Alto firewalls for effective logging, monitoring, and reporting to enhance network security.

Learn systematic VLAN troubleshooting methods, tools, and advanced techniques for efficient network diagnostics.

Learn how to configure an Active/Passive HA pair for Palo Alto Networks firewalls to ensure high availability and minimize downtime.

Learn to set up a basic network using Cisco Packet Tracer, covering IP addressing, routing, and connectivity testing.

Learn to identify, diagnose, and resolve common VLAN issues in production environments.

Learn how to optimize your Palo Alto Networks firewall for maximum performance and efficiency.

Learn how to build a secure home or lab network using open-source tools and best practices.

Learn advanced strategies for optimizing VLAN performance and ensuring robust network operations.

Learn how to design and implement a secure branch office network using Palo Alto Networks Next-Generation Firewalls.

A comprehensive guide for network engineers on integrating on-premises VLANs with AWS and Azure, including configuration options, automation, …

Learn how to implement Zero-Trust principles using Palo Alto Networks Next-Generation Firewalls with step-by-step instructions.

Learn how to design, implement, and maintain scalable VLAN infrastructures for SD-WAN-enabled branch offices.

Learn to optimize network performance and troubleshoot issues using tools like Wireshark and understanding key metrics such as bandwidth, latency, and …

Learn how to build a secure multi-tenant data center using VXLAN/EVPN, covering technical concepts, design, implementation, and security …

Learn enterprise best practices and design principles for secure, efficient, and resilient network architectures using Palo Alto Networks firewalls.

Learn how to implement a GitOps workflow for VLAN configuration management using Ansible and Terraform.

Learn the systematic approach to diagnosing and resolving issues on Palo Alto Networks firewalls.

Learn how to maintain and upgrade your Palo Alto Networks NGFW for optimal security and performance.

Explains the concept of routing in AI agents, enabling dynamic decision-making based on input and context.

Embark on a comprehensive journey to master Zero Trust Security, understanding its core principles and learning a structured approach to implement it …

Master Zero Trust Security from fundamentals to advanced implementation. Learn its principles, importance in modern cybersecurity, and practical …

An educational engineering postmortem analyzing the QUIC congestion window stalling incident caused by an incorrect porting of a Linux kernel idle …

Build a real-time collaborative drawing application for iOS using modern Swift and SwiftUI. Learn about WebSocket communication, data synchronization, …

Comprehensive guide to diagnosing and resolving network latency issues for web applications and VoIP services.

Learn the art of subnetting to organize your network and improve efficiency.

Master Virtual Local Area Networks (VLANs) with enterprise-grade configurations, automation, security, and multi-vendor best practices. For CCNP+ …

A comprehensive guide to diagnosing and resolving network issues in Cisco enterprise environments.

Explore the hierarchical architecture, roles of DNS server types, and step-by-step journey of a query from your browser to an authoritative name …

A comprehensive guide to diagnosing and resolving network slowness issues, including latency, ping analysis, and TCP retransmissions.

Comprehensive cheatsheet for configuring, managing, and troubleshooting Aruba Wireless LANs running AOS 8 and AOS 10.

A comprehensive cheatsheet for Palo Alto Networks Firewall administrators, covering essential commands and troubleshooting tips.

Explains the inner workings of HTTPS, including TLS protocol and cryptographic primitives.

Comprehensive cheat sheet for HTTP status codes, headers, and CORS configuration.

A comprehensive guide to mastering network security and analysis, from foundational concepts to advanced strategies.

A comprehensive guide to mastering Palo Alto NGFWs, covering setup, configurations, and advanced features.

Learn how to effectively troubleshoot and debug Docker containers, images, networks, and volumes.

Learn Docker networking fundamentals, including network drivers and user-defined bridge networks for efficient container communication.

Learn advanced Docker concepts including Compose for multi-service apps and Swarm for native orchestration.