- Lab
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Libraries: If you want this lab, consider one of these libraries.
- Cloud
Create a Custom VPC in Google Cloud
In this lab, you'll replace a default Auto Mode network with a Custom Mode VPC, designing regional subnets with non-overlapping IP ranges the way you would in a real enterprise environment. You'll then lock down access with targeted firewall rules and confirm your network is working by testing connectivity between subnets using private IP addresses.
Lab Info
Table of Contents
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Challenge
Create a custom mode VPC
A. Create a custom mode VPC with two regional subnets.
B. Set dynamic routing mode to global.
C. Confirm no auto-created subnets exist outside of subnet-a and subnet-b.
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Challenge
Define firewall rules
A. Create an SSH firewall rule scoped to IAP source ranges and the allow-ssh network tag.
B. Create an ICMP firewall rule scoped to RFC 1918 address space and the allow-icmp network tag.
C. Confirm both rules are scoped to the custom VPC, not the default network.
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Challenge
Validate cross-subnet connectivity
A. Enable Private Google Access on both subnets.
B. Deploy two VMs across subnets with no external IPs.
C. SSH into vm-subnet-a via IAP tunnel.
D. Ping vm-subnet-b using its internal IP to validate cross-subnet connectivity.
E. Remove and restore the ICMP network tag to confirm firewall rule enforcement.
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