How do VPC Firewall Rules work? What is the difference between using network tags and service accounts?

Q: How do VPC Firewall Rules work? What is the difference between using network tags and service accounts?

> VPC Firewall Rules allow or block traffic to VM instances. * **Network Tags**: Label tags attached to VMs. They are simple to use but less secure because any user with VM write permissions can change tags and bypass rules. * **Service Accounts**: Rules apply based on the service account identity of the VM. This is cryptographically secure because running a VM under a specific service account requires strict IAM permissions.

💬Answer

VPC Firewall Rules allow or block traffic to VM instances.

Network Tags: Label tags attached to VMs. They are simple to use but less secure because any user with VM write permissions can change tags and bypass rules.
Service Accounts: Rules apply based on the service account identity of the VM. This is cryptographically secure because running a VM under a specific service account requires strict IAM permissions.

Related GCP Questions

View All GCPQuestions →

Explain the different levels or service tiers of Google Cloud. How does business process outsourcing fit into the cloud ecosystem?

How do organizations systematically save money and resources by migrating to cloud computing?

What is Eucalyptus, and how does it fit into public, private, and hybrid cloud architectures?

How does on-premises computing differ from a private cloud?

Created by

Apurv Gujjar

DevOps & Cloud Engineer

Specialized in:DevOpsAWSGCPKubernetesTerraformDocker

View Portfolio