* Challenge:
* Prevent common misconfigurations that expose services (e.g., MYSQL) to the public internet.
* Hierarchical Firewall Policies:
* These policies can be applied at the organization level to enforce consistent network security rules across all projects.
* Solution:
* Create a hierarchical firewall policy that allows connections only from internal IP ranges.
* This policy ensures that services like MySQL are not exposed to 0.0.0.0/0 (the entire internet).
* Steps:
* Step 1: Define the hierarchical firewall policy at the organization level.
* Step 2: Set the rule to allow traffic only from internal IP ranges.
* Step 3: Apply the policy to all projects under the organization.
* Benefits:
* Centralized management of network security.
* Prevents accidental exposure of services to the public internet, enhancing security.
References:
* Hierarchical Firewall Policies
* Securing MySQL on GCP