Individual skill
configuring-network-segmentation-with-vlans
Designs and implements VLAN-based (802.1Q) network segmentation on managed switches to isolate zones such as corporate, servers, DMZ, guest, and IoT, and to limit lateral movement paths. Use when segmenting an enterprise network into isolated security zones, meeting compliance mandates (PCI-DSS, HIPAA, SOC 2) for network isolation, or reducing blast radius from a security incident.
skills/configuring-network-segmentation-with-vlans/SKILL.md
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- Last checked
- Nov 9, 2026
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- Aug 31, 2026
- License
- Apache-2.0
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- ai-agents Repository topic
- claude-code Repository topic
- cybersecurity Repository topic
- incident-response Repository topic
- mitre-attack Repository topic
- penetration-testing Repository topic
- red-team Repository topic
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- network-security Declared skill tag
- vlan Declared skill tag
- network-segmentation Declared skill tag
- switch-security Declared skill tag
- 802.1q Declared skill tag
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- security Derived category
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# Configuring Network Segmentation with VLANs
## When to Use
- Segmenting an enterprise network into isolated security zones (corporate, servers, DMZ, guest, IoT)
- Meeting compliance requirements (PCI-DSS, HIPAA, SOC 2) that mandate network isolation for sensitive data
- Reducing blast radius of security incidents by preventing lateral movement between network segments
- Isolating high-risk devices (IoT, BYOD, legacy systems) from critical infrastructure
- Implementing defense-in-depth by combining VLANs with firewall rules and access control lists
**Do not use** VLANs as the sole security control without Layer 3 filtering, for isolating networks that require air-gapping, or without proper switch hardening against VLAN hopping attacks.
## Prerequisites
- Managed switches supporting 802.1Q VLAN trunking (Cisco Catalyst, HP Aruba, Juniper EX, etc.)