# Gergo Vadasz - Cloud Networking & Terraform Blog

> Personal technical blog by Gergo Vadasz, a cloud network engineer. Covers multi-cloud networking architecture, infrastructure as code with Terraform, and hands-on deployment guides for AWS, Azure, GCP, and Cloudflare. All guides include working Terraform code and architecture diagrams.

## Topics

- Multi-cloud networking (AWS, Azure, GCP, Oracle Cloud)
- Hub-and-spoke network architectures
- Terraform infrastructure as code
- VPN, hybrid connectivity, and DNS
- Load balancing and traffic management
- Serverless networking (Lambda, Cloud Run)
- Security (firewalls, zero trust, NVAs)
- Free and open-source tools for network engineers

## GCP Networking

- [Connecting Your Hybrid Cloud with GCP Connectivity Center and Router Appliance - with Terraform](https://gergovadasz.hu/connecting-your-hybrid-cloud-with-gcp-connectivity-center-and-router-appliance-with-terraform/): Step-by-step guide to deploying GCP Network Connectivity Center with Router Appliance using Terraform. Covers hybrid cloud connectivity, BGP peering, and full IaC code.
- [Hybrid DNS with GCP Network Connectivity Center and Enterprise IPAM](https://gergovadasz.hu/hybrid-dns-with-gcp-network-connectivity-center-and-enterprise-ipam/): How to set up hybrid DNS resolution using GCP Network Connectivity Center with enterprise IPAM integration.
- [How to Verify Google Cloud Run Outbound IP and Country](https://gergovadasz.hu/how-to-verify-google-cloud-run-outbound-ip-and-country/): Verify the outbound IP address and geographic location of Google Cloud Run services.
- [Connecting Google Cloud Run with On-Prem Resources](https://gergovadasz.hu/connecting-google-cloud-run-with-on-prem-resources/): Guide to connecting serverless Cloud Run services to on-premises infrastructure.
- [GCP Load Balancer Security](https://gergovadasz.hu/gcp-load-balancer-security/): Security considerations and configuration for Google Cloud load balancers.

## AWS Networking

- [Deploying an AWS Multi-Region Hub-Spoke Architecture with Terraform](https://gergovadasz.hu/deploying-an-aws-multi-region-hub-spoke-architecture-with-terraform/): Deploy a multi-region hub-and-spoke network on AWS using Transit Gateway with full Terraform code and architecture diagrams.
- [Why AWS Route Server Simplifies NVA High Availability](https://gergovadasz.hu/why-aws-route-server-simplifies-nva-high-availability/): How AWS Route Server simplifies network virtual appliance high availability compared to traditional approaches.
- [AWS Lambda VPC Integration: Internet Access via NAT Gateway (with Terraform code)](https://gergovadasz.hu/aws-lambda-vpc-integration-internet-access-via-nat-gateway-with-terraform-code/): How to give AWS Lambda functions internet access inside a VPC using NAT Gateway, with complete Terraform code.
- [Save NAT Gateway Costs by Using an EC2 - Terraform Code Included](https://gergovadasz.hu/save-nat-gateway-costs-by-using-an-ec2-terraform-code-included/): Cost-saving alternative to AWS NAT Gateway using an EC2 instance as a NAT, with Terraform deployment code.
- [AWS Network Design and VPN Configuration](https://gergovadasz.hu/aws-network-design-and-vpn-configuration/): AWS network architecture design and site-to-site VPN setup guide.

## Azure Networking

- [Azure Load Balancing Explained - Choosing the Right Solution](https://gergovadasz.hu/azure-load-balancing-explained-choosing-the-right-solution/): Comparison of all Azure load balancing options including Application Gateway, Front Door, Load Balancer, and Traffic Manager with use cases for each.
- [Azure Route Server and NVA: Enforcing VNet Traffic - plus Terraform Code](https://gergovadasz.hu/azure-route-server-and-nva-enforcing-vnet-traffic-plus-terraform-code/): Deploy Azure Route Server with a network virtual appliance to enforce VNet traffic routing, with Terraform code.
- [Hub-and-Spoke Topology with Azure Firewall - Deployment Guide with Terraform](https://gergovadasz.hu/hub-and-spoke-topology-with-azure-firewall-deployment-guide-with-terraform/): Complete deployment guide for Azure hub-and-spoke network topology with Azure Firewall using Terraform.
- [Secure and Private Connectivity Between Azure and Oracle Cloud](https://gergovadasz.hu/secure-and-private-connectivity-between-azure-and-oracle-cloud/): How to establish secure private connectivity between Azure and Oracle Cloud Infrastructure.
- [Build & Deploy Cloud Infrastructure Using Azure DevOps and Terraform](https://gergovadasz.hu/build-deploy-cloud-infrastructure-using-azure-devops-and-terraform/): CI/CD pipeline for Terraform deployments using Azure DevOps.

## Cloudflare & Security

- [Deploy a Private Website with Cloudflare Zero Trust and Terraform](https://gergovadasz.hu/deploy-a-private-website-with-cloudflare-zero-trust-and-terraform/): Host a private website behind Cloudflare Zero Trust tunnels with access policies, deployed via Terraform.

## Web Hosting & Deployment

- [From Docker to Azure: Deploy a Free Web App Using Terraform](https://gergovadasz.hu/from-docker-to-azure-deploy-a-free-web-app-using-terraform/): Deploy a Docker container as a free Azure Web App using Terraform with GitHub integration.
- [Free Website Hosting on Azure App Services with GitHub Actions](https://gergovadasz.hu/free-website-hosting-on-azure-app-services-with-github-actions/): Set up free website hosting on Azure App Services with automated GitHub Actions deployment.

## Tools

- [SSL Made Simple: A Free Tool to Check, Convert, and Decode Certificates](https://gergovadasz.hu/ssl-made-simple-a-free-tool-to-check-convert-and-decode-certificates/): Free web-based tool for checking, converting, and decoding SSL/TLS certificates.
- [IP Calculator Web App for Network Engineers](https://gergovadasz.hu/redesigned-ip-calculator-web-app-for-network-engineers-now-with-dark-mode/): Subnet calculator web application for network engineers with CIDR notation support.
- [Free Uptime Monitoring Using a Self-Hosted Solution](https://gergovadasz.hu/free-uptime-monitoring-using-a-self-hosted-solution-2/): Self-hosted uptime monitoring setup using open-source tools.

## About

- Author: Gergo Vadasz
- Website: https://gergovadasz.hu
- About: https://gergovadasz.hu/about/
- Contact: https://gergovadasz.hu/contact/