Individual skill
implementing-gcp-vpc-firewall-rules
Implements and audits GCP VPC firewall rules using gcloud, covering auditing overly permissive rules, creating restrictive ingress/egress rules, hierarchical firewall policies, and monitoring rule effectiveness with VPC Flow Logs. Use when deploying GCP workloads needing network access controls, auditing firewall configs, or responding to Security Command Center findings; not for Cloud Armor or DNS-based filtering.
skills/implementing-gcp-vpc-firewall-rules/SKILL.md
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- Last checked
- Nov 9, 2026
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- Repository last updated
- Aug 31, 2026
- License
- Apache-2.0
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- ai-agents Repository topic
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- cloud-security Declared skill tag
- gcp Declared skill tag
- vpc Declared skill tag
- firewall-rules Declared skill tag
- network-security Declared skill tag
- segmentation Declared skill tag
- security Derived category
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# Implementing GCP VPC Firewall Rules
## When to Use
- When deploying new GCP workloads that require network-level access controls
- When auditing existing firewall configurations for overly permissive rules
- When implementing zero trust network segmentation within GCP VPC networks
- When responding to Security Command Center findings about open firewall rules
- When building hierarchical firewall policies across a GCP organization
**Do not use** for application-layer filtering (use Cloud Armor WAF), for DNS-based filtering (use Cloud DNS response policies), or for VPN/interconnect traffic filtering without understanding that VPC firewall rules apply to traffic within the VPC.
## Prerequisites
