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This skill provides a comprehensive guide to implementing microsegmentation policies. It details how to move beyond traditional network boundaries (VLANs) to enforce least-privilege access control between individual workloads using identity and application context. Essential for preventing lateral movement and establishing a robust zero-trust architecture aligned with industry compliance standards.

This guide details the robust process of implementing VLAN-based (802.1Q) network segmentation on managed switches. It is crucial for isolating critical zones—such as DMZ, servers, and IoT—to meet strict compliance standards (PCI-DSS, HIPAA) and significantly limiting the blast radius during a security incident by controlling lateral movement. Includes port hardening and ACL configuration.

A comprehensive guide detailing the implementation of 802.1X port-based Network Access Control (NAC) using RADIUS authentication and platforms like PacketFence. This solution enforces identity-based access, performs endpoint posture assessment, and dynamically assigns VLANs. It is essential for establishing zero-trust networks, meeting stringent compliance standards (PCI-DSS, HIPAA), and automating the onboarding of BYOD devices.

This guide details the deployment of Cisco Identity Services Engine (ISE) for comprehensive Network Access Control (NAC). It utilizes 802.1X authentication, MAC Authentication Bypass (MAB), and posture assessment to enforce security policies. Key features include integrating with Active Directory, assigning dynamic VLANs, and applying TrustSec Security Group Tags (SGTs) for advanced network segmentation in enterprise environments.

This tool analyzes historical network traffic baselines to design secure and functional segmentation architectures for Operational Technology (OT) environments. It helps map flat Purdue-model networks into secure zones (VLANs) and automatically generates required firewall rules based on observed legitimate communication paths, adhering to standards like IEC 62443. Ideal for IT/OT convergence and risk mitigation.

This skill covers the comprehensive design and implementation of network segmentation using layered security controls. It details how to establish isolated security zones (e.g., DMZ, PCI CDE, Management) using VLANs, firewall zones, and granular ACLs. The techniques advance from traditional Layer 2 VLAN separation to modern Layer 7 microsegmentation, enforcing zero-trust principles and meeting strict compliance standards like PCI DSS and HIPAA.

This skill simulates advanced Layer 2 network attacks, including VLAN hopping, using techniques like switch spoofing (DTP) and 802.1Q double tagging. It is designed exclusively for authorized penetration testing environments to validate network segmentation, test trunk port hardening, and assess the risk of unauthorized VLAN access across the network infrastructure.

This comprehensive playbook details advanced techniques for exploiting Layer 2 and Layer 3 network protocols. It covers attacks such as ARP spoofing, LLMNR/mDNS poisoning, WPAD abuse, DHCPv6 takeover, VLAN hopping, and STP manipulation. Designed for penetration testers, it facilitates MitM positioning, credential harvesting (NTLM relay), and robust network environment exploitation.

A comprehensive guide to designing and structuring a scalable home or small-lab network. This skill covers best practices for IP addressing, network segmentation (VLANs), selecting reliable gateways (like pfSense/OPNsense), and planning for future growth, ensuring stability and avoiding common pitfalls like Double NAT. Ideal for advanced users building robust IoT, server, and guest networks.

This skill guides the planning and review process for complex home or small-lab network changes. It covers creating staged migration plans for VLAN segmentation, implementing local DNS resolvers (like Pi-hole), setting up secure VPN access, and ensuring network safety through detailed inventory checks and rollback procedures. It emphasizes security best practices and trust zoning.

A comprehensive guide on segmenting a home network using VLANs to dramatically enhance security. Learn how to isolate different device types—such as IoT gadgets, guests, and servers—from main PCs, preventing cross-segment malware spread and unauthorized communication. Covers setup steps for UniFi, pfSense, and OPNsense.

This skill guides the planning and review process for complex home or small-lab network changes. It covers creating staged migration plans for VLAN segmentation, implementing local DNS resolvers (like Pi-hole), setting up secure VPN access, and ensuring network safety through detailed inventory checks and rollback procedures. It emphasizes security best practices and trust zoning.