MR
Mayur Rathi
@sickn33
⭐ 47.3k GitHub stars

gcp-networking

gcp-networking is an engineering AI skill with a core value of Configure VPCs, firewall rules, and Cloud NAT. It helps developers solve real-world problems in the engineering domain, boosting efficiency, automating repetitive tasks, and optimizing workflows.

Configure VPCs, firewall rules, and Cloud NAT. Implement shared VPC and private service connect. Use when designing GCP network infrastructure.

Last verified on: 2026-10-06

Quick Facts

Category engineering
Works With Claude
Source sickn33/antigravity-awesome-skills
Stars ⭐ 47.3k
Last Verified 2026-10-06
Risk Level Low
mkdir -p ./skills/gcp-networking && curl -sfL https://raw.githubusercontent.com/sickn33/antigravity-awesome-skills/main/skills/gcp-networking/SKILL.md -o ./skills/gcp-networking/SKILL.md

Run in terminal / PowerShell. Requires curl (Unix) or PowerShell 5+ (Windows).

Skill Content

# GCP Networking


Design, implement, and secure network infrastructure on Google Cloud Platform.


When to Use


- Building VPC networks for new GCP projects or multi-project architectures

- Configuring firewall rules to control traffic between services

- Setting up Cloud NAT for outbound internet access from private instances

- Deploying load balancers for HTTP(S), TCP/UDP, or internal traffic

- Implementing Private Service Connect or Shared VPC


Prerequisites


- Google Cloud SDK (`gcloud`) installed and authenticated

- Compute Engine API enabled

- IAM role `roles/compute.networkAdmin` for network management


bash 
gcloud services enable compute.googleapis.com servicenetworking.googleapis.com

VPC Network Creation


bash 
gcloud compute networks create prod-vpc \
  --subnet-mode=custom --bgp-routing-mode=regional --mtu=1460

gcloud compute networks subnets create us-subnet \
  --network=prod-vpc --region=us-central1 --range=10.0.0.0/20 \
  --enable-private-ip-google-access --enable-flow-logs \
  --logging-flow-sampling=0.5

gcloud compute networks subnets create eu-subnet \
  --network=prod-vpc --region=europe-west1 --range=10.1.0.0/20 \
  --enable-private-ip-google-access --enable-flow-logs

# Subnet with secondary ranges for GKE
gcloud compute networks subnets create gke-subnet \
  --network=prod-vpc --region=us-central1 --range=10.2.0.0/20 \
  --secondary-range=pods=10.4.0.0/14,services=10.8.0.0/20 \
  --enable-private-ip-google-access

# Proxy-only subnet (required for regional L7 LBs)
gcloud compute networks subnets create proxy-only-subnet \
  --network=prod-vpc --region=us-central1 --range=10.129.0.0/23 \
  --purpose=REGIONAL_MANAGED_PROXY --role=ACTIVE

Firewall Rules


bash 
gcloud compute firewall-rules create allow-http-https \
  --network=prod-vpc --allow=tcp:80,tcp:443 \
  --source-ranges=0.0.0.0/0 --target-tags=http-server --priority=1000

gcloud compute firewall-rules create allow-internal \
  --network=prod-vpc --allow=tcp,udp,icmp \
  --source-ranges=10.0.0.0/8 --priority=1000

gcloud compute firewall-rules create allow-iap-ssh \
  --network=prod-vpc --allow=tcp:22 \
  --source-ranges=35.235.240.0/20 --priority=1000

gcloud compute firewall-rules create allow-health-checks \
  --network=prod-vpc --allow=tcp:80,tcp:443,tcp:8080 \
  --source-ranges=130.211.0.0/22,35.191.0.0/16 \
  --target-tags=http-server --priority=900

# List firewall rules
gcloud compute firewall-rules list --filter="network=prod-vpc" \
  --format="table(name,direction,priority,allowed[].map().firewall_rule().list():label=ALLOW)"

Cloud NAT


bash 
gcloud compute routers create prod-router \
  --network=prod-vpc --region=us-central1

gcloud compute routers nats create prod-nat \
  --router=prod-router --region=us-central1 \
  --nat-all-subnet-ip-ranges --auto-allocate-nat-external-ips \
  --min-ports-per-vm=256 --max-ports-per-vm=4096 \
  --enable-logging --log-filter=ERRORS_ONLY

# Static NAT IPs (stable egress)
gcloud compute addresses create nat-ip-1 nat-ip-2 --region=us-central1
gcloud compute routers nats create prod-nat-static \
  --router=prod-router --region=us-central1 \
  --nat-all-subnet-ip-ranges --nat-external-ip-pool=nat-ip-1,nat-ip-2

External HTTP(S) Load Balancer


bash 
gcloud compute addresses create web-lb-ip --global

gcloud compute health-checks create http web-hc \
  --port=80 --request-path=/healthz --check-interval=10s --timeout=5s

gcloud compute backend-services create web-backend \
  --protocol=HTTP --port-name=http --health-checks=web-hc \
  --global --enable-cdn --enable-logging

gcloud compute backend-services add-backend web-backend \
  --instance-group=web-mig --instance-group-region=us-central1 \
  --balancing-mode=UTILIZATION --max-utilization=0.8 --global

gcloud compute url-maps create web-url-map --default-service=web-backend

gcloud compute ssl-certificates create web-cert \
  --domains=app.example.com --global

gcloud compute target-https-proxies create web-proxy

🎯 Best For

  • Claude users
  • AI users

💡 Use Cases

  • Using gcp-networking in daily workflow
  • Automating repetitive engineering tasks

📖 How to Use This Skill

  1. 1

    Install the Skill

    Copy the install command from the Terminal tab and run it. The SKILL.md file downloads to your local skills directory.

  2. 2

    Load into Your AI Assistant

    Open Claude and reference the skill. Paste the SKILL.md content or use the system prompt tab.

  3. 3

    Apply gcp-networking to Your Work

    Provide context for your task — paste source material, describe your audience, or share existing work to guide the AI.

  4. 4

    Review and Refine

    Edit the AI output for accuracy, tone, and completeness. Add human insight where the AI lacks context.

❓ Frequently Asked Questions

How do I install gcp-networking?

Copy the install command from the Terminal tab and run it. The skill downloads to ./skills/gcp-networking/SKILL.md, ready to use.

Can I customize this skill for my team?

Absolutely. Edit the SKILL.md file to add team-specific instructions, examples, or workflows.

⚠️ Common Mistakes to Avoid

Not reading the full skill

Skills contain important context and edge cases beyond the quick start.

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