Category Cloud Network Engineer

Theory is comfortable. Troubleshooting is not. The PCNE exam does not just test whether you know what a firewall rule is—it tests whether you can diagnose why a specific connection is failing when five different components are involved. This article…

In a world where a single VPC can span the globe and a single firewall misconfiguration can expose an entire organization, manual configuration through the Cloud Console is not just inefficient—it is dangerous. Clicking through the UI to create subnets,…

There is a level of Google Cloud networking that most documentation glosses over. These are the features that only matter when your architecture is complex enough to need them—when standard routing is not flexible enough, when BGP convergence is too…

Every certification exam has topics that feel “minor” until you encounter three questions about them in a row. These are the concepts that sit between the major pillars—not important enough for their own dedicated section in the study guide, but…

Once you have mastered the core VPC, the VPN, the load balancers, and the firewalls, there is a layer of advanced services that the PCNE exam tests at the edges. These are the services that most engineers never touch in…

Building a network is one thing. Keeping it running is another. In production, the most dangerous state is not “broken”—it is “silently degraded.” A misconfigured firewall rule that blocks 5% of traffic. A route that sends packets on a suboptimal…

Firewalls protect your network from unauthorized access. IAM protects your resources from unauthorized users. But neither of them protects you from the most dangerous threat of all: a legitimate, authorized user copying your data to an unauthorized project. Imagine a developer with…

In the cloud, “no public IP” is a security best practice. Your VMs should be private. Your GKE nodes should be private. Your Cloud Run services should be private. But private VMs still need to reach the internet—to pull package…

In a modern cloud architecture, you constantly consume services: Cloud SQL, MongoDB Atlas, Snowflake, or even Google’s own APIs. The naive way to connect is over the public internet. The professional way is to keep it private. The Trio of…

Security in cloud networking is not just about blocking bad actors. It is about managing complexity at scale. In a small project with five VMs, you write a few firewall rules and move on. But when you have a hundred…