Best practice rules for Google Cloud Platform

Google Cloud Platform best practice rules

Trend Micro Cloud One™ – Conformity has over 750+ cloud infrastructure configuration best practices for your Amazon Web Services, Microsoft® Azure, and Google Cloud™ environments. Here is our growing list of GCP best practice rules with clear instructions on how to perform the updates – made either through the GCP console or via the Command Line Interface (CLI).

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GCP BigQuery
- Check for Publicly Accessible BigQuery Datasets
  Ensure that Google Cloud BigQuery datasets are not publicly accessible.
- Enable Encryption with Customer-Managed Keys
  Ensure that BigQuery dataset tables are encrypted using Customer-Managed Keys (CMKs).
GCP Identity and Access Management (IAM)
- Check for IAM Members with Service Roles at the Project Level
  Ensure there are no IAM members with Service Account User and Service Account Token Creator roles at the project level.
- Corporate Login Credentials In Use
  Use corporate login credentials instead of personal accounts such as Gmail accounts.
- Delete User-Managed Service Account Keys
  Ensure there are no user-managed keys associated with your GCP service accounts.
- Enable Multi-Factor Authentication for User Accounts
  Ensure that Multi-Factor Authentication (MFA) feature is enabled for all GCP user accounts.
- Enable Security Key Enforcement for Admin Accounts
  Enforce the use of security keys to help prevent Google Cloud account hijacking.
- Enforce Separation of Duties for Service-Account Related Roles
  Ensure that separation of duties is implemented for all Google Cloud service account roles.
- Minimize the Use of Primitive Roles
  Ensure that the use of Cloud Identity and Access Management (IAM) primitive roles is limited within your Google Cloud projects.
- Restrict Administrator Access for Service Accounts
  Ensure that user-managed service accounts are not using administrator-based roles.
- Rotate User-Managed Service Account Keys
  Ensure that your user-managed service account keys are rotated periodically.
GCP Cloud Key Management Service (KMS)
- Check for Publicly Accessible Cloud KMS Keys
  Ensure there are no publicly accessible KMS cryptographic keys available within your Google Cloud account.
- Rotate Google Cloud KMS Keys
  Ensure that all KMS cryptographic keys available within your Google Cloud account are regularly rotated.
GCP Cloud Load Balancing
- Check for Insecure SSL Cipher Suites
  Ensure there are no HTTPS/SSL Proxy load balancers configured with insecure SSL policies.
- Enable HTTPS for Google Cloud Load Balancers
  Ensure that Google Cloud load balancers enforce HTTPS to handle encrypted web traffic.
- Enable Logging for HTTP(S) Load Balancing Backend Services
  Ensure that logging is enabled for Google Cloud load balancing backend services.
GCP Cloud Logging
- Enable Logs Router Encryption with Customer-Managed Keys
  Ensure that Google Cloud Logs Router data is encrypted using Customer-Managed Keys (CMKs).
GCP Cloud Pub/Sub Service
- Enable Dead Lettering for Google Pub/Sub Subscriptions
  Ensure there is a dead-letter topic configured for each Pub/Sub subscription.
- Enable Pub/Sub Topic Encryption with Customer-Managed Keys
  Ensure that Pub/Sub topics are encrypted using Customer-Managed Keys (CMKs).
GCP Cloud SQL
- Check for Cloud SQL Database Instances with Public IPs
  Ensure that Cloud SQL database instances don't have public IP addresses assigned.
- Check for MySQL Major Version
  Ensure that MySQL database servers are using the latest major version of MySQL database.
- Check for PostgreSQL Major Version
  Ensure that PostgreSQL database servers are using the latest major version of PostgreSQL database.
- Check for Publicly Accessible Cloud SQL Database Instances
  Ensure that Cloud SQL database instances are not wide open to the Internet.
- Configure "log_min_error_statement" Flag for PostgreSQL Database Instances
  Ensure that PostgreSQL database instances have the appropriate configuration set for the "log_min_error_statement" flag.
- Configure "max_connections" Flag for PostgreSQL Database Instances
  Ensure that PostgreSQL database instances have the appropriate configuration set for the "max_connections" flag.
- Configure Automatic Storage Increase Limit
  Ensure there is an automatic storage increase limit configured for your Cloud SQL database instances.
- Configure Root Password for MySQL Database Access
  Ensure that MySQL databases can't be accessed with administrative privileges only (i.e. without using passwords).
- Disable "Contained Database Authentication" Flag for SQL Server Database Instances
  Ensure that SQL Server database instances have "contained database authentication" flag set to Off.
- Disable "Cross DB Ownership Chaining" Flag for SQL Server Database Instances
  Ensure that SQL Server database instances have "cross db ownership chaining" flag set to Off.
- Disable "local_infile" Flag for MySQL Database Instances
  Ensure that MySQL database instances have the "local_infile" flag set to Off (disabled).
- Disable "log_min_duration_statement" Flag for PostgreSQL Database Instances
  Ensure that PostgreSQL database instances have "log_min_duration_statement" flag set to -1 (Off).
- Enable "log_checkpoints" Flag for PostgreSQL Database Instances
  Ensure that PostgreSQL database instances have "log_checkpoints" flag set to On.
- Enable "log_checkpoints" Flag for PostgreSQL Database Server Configuration
  Ensure that "log_checkpoints" flag is enabled within your PostgreSQL database servers configuration.
- Enable "log_connections" Flag for PostgreSQL Database Instances
  Ensure that PostgreSQL database instances have the "log_connections" configuration flag set to On.
- Enable "log_disconnections" Flag for PostgreSQL Database Instances
  Ensure that PostgreSQL database instances have the "log_disconnections" flag set to On (enabled).
- Enable "log_lock_waits" Flag for PostgreSQL Database Instances
  Ensure that PostgreSQL database instances have the "log_lock_waits" flag set to On.
- Enable "log_temp_files" Flag for PostgreSQL Database Instances
  Ensure that PostgreSQL database instances have the "log_temp_files" flag set to 0 (On).
- Enable "slow_query_log" Flag for MySQL Database Servers
  Ensure that MySQL database instances have the "slow_query_log" flag set to On (enabled).
- Enable Automated Backups for Cloud SQL Database Instances
  Ensure that Cloud SQL database instances are configured with automated backups.
- Enable Automatic Storage Increase
  Ensure that automatic storage increase is enabled for your Cloud SQL database instances.
- Enable Cloud SQL Instance Encryption with Customer-Managed Keys
  Ensure that Cloud SQL instances are encrypted with Customer-Managed Keys (CMKs).
- Enable High Availability for Cloud SQL Database Instances
  Ensure that production SQL database instances are configured to automatically fail over to another zone within the selected cloud region.
- Enable Point-in-Time Recovery for MySQL Database Instances
  Ensure that your MySQL database instances have Point-in-Time Recovery feature enabled.
- Enable SSL/TLS for SQL Server Incoming Connections
  Ensure that SQL Server database instances require all incoming connections to use SSL/TLS.
- Rotate Server Certificates for Cloud SQL Database Instances
  Ensure that Cloud SQL server certificates are rotated (renewed) before their expiration.
GCP Cloud Storage
- Check for Publicly Accessible Cloud Storage Buckets
  Ensure there are no publicly accessible Cloud Storage buckets available within your Google Cloud Platform (GCP) account.
- Check for Sufficient Data Retention Period
  Ensure there is a sufficient retention period configured for Google Cloud Storage objects.
- Enable Lifecycle Management for Cloud Storage Objects
  Ensure that Google Cloud Storage objects are using a lifecycle configuration for cost management.
- Enable Object Encryption with Customer-Managed Keys
  Ensure that your Cloud Storage objects are encrypted using Customer-Managed Keys (CMKs).
- Enable Object Versioning for Cloud Storage Buckets
  Ensure that object versioning is enabled for your Google Cloud Storage buckets.
- Enable Uniform Bucket-Level Access for Cloud Storage Buckets
  Ensure that Google Cloud Storage buckets have uniform bucket-level access enabled.
GCP Compute Engine
- Approved Virtual Machine Image in Use
  Ensure that all your virtual machine instances are launched from approved images only.
- Check for Desired Machine Type(s)
  Ensure that your virtual machine (VM) instances are of a given type (e.g. c2-standard-4).
- Check for Instance-Associated Service Accounts with Full API Access
  Ensure that VM instances are not associated with default service accounts that allow full access to all Google Cloud APIs.
- Check for Instances Associated with Default Service Accounts
  Ensure that your VM instances are not associated with the default GCP service account.
- Check for Publicly Shared Disk Images
  Ensure that your virtual machine disk images are not accessible to all GCP accounts.
- Check for Virtual Machine Instances with Public IP Addresses
  Ensure that Google Cloud VM instances are not using public IP addresses.
- Configure Maintenance Behavior for VM Instances
  Ensure that "On Host Maintenance" configuration setting is set to "Migrate" for all VM instances.
- Disable Auto-Delete for VM Instance Persistent Disks
  Ensure that the Auto-Delete feature is disabled for the disks attached to your VM instances.
- Disable IP Forwarding for Virtual Machine Instances
  Ensure that IP Forwarding is not enabled for your Google Cloud virtual machine (VM) instances.
- Disable Interactive Serial Console Support
  Ensure that interactive serial console support is not enabled for your Google Cloud instances.
- Disable Preemptibility for VM Instances
  Ensure that your production Google Cloud virtual machine instances are not preemptible.
- Enable "Block Project-Wide SSH Keys" Security Feature
  Ensure that project-wide SSH keys are not used to access your Google Cloud VM instances.
- Enable "Shielded VM" Security Feature
  Ensure that Shielded VM feature is enabled for your virtual machine (VM) instances.
- Enable Automatic Restart for VM Instances
  Ensure that automatic restart is enabled for your Google Cloud virtual machine (VM) instances.
- Enable Deletion Protection for VM Instances
  Ensure that deletion protection is enabled for your Google Cloud virtual machine (VM) instances.
- Enable Instance Group Autohealing
  Ensure that your Google Cloud instance groups are using autohealing to proactively replace failing instances.
- Enable OS Login for GCP Projects
  Ensure that OS Login feature is enabled for your Google Cloud projects.
- Enable VM Disk Encryption with Customer-Supplied Encryption Keys
  Ensure that your virtual machine (VM) instance disks are encrypted with CSEKs.
- Enable Virtual Machine Disk Encryption with Customer-Managed Keys
  Ensure that your virtual machine (VM) instance disks are encrypted using Customer-Managed Keys (CMKs).
- Enforce HTTPS Connections for App Engine Applications
  Ensure that Google App Engine applications enforce HTTPS connections.
- Remove Old Persistent Disk Snapshots
  Remove old virtual machine disk snapshots in order to optimize Google Cloud monthly costs.
- Use OS Login with 2FA Authentication for VM Instances
  Ensure that OS Login is configured with Two-Factor Authentication (2FA) for production VM instances.
GCP Dataproc Service
- Enable Dataproc Cluster Encryption with Customer-Managed Keys
  Ensure that your Dataproc clusters are encrypted using Customer-Managed Keys (CMKs).
GCP Google Kubernetes Engine Service
- Enable Application-Layer Secrets Encryption for GKE Clusters
  Ensure that encryption of Kubernetes secrets using Cloud KMS is enabled for GKE clusters.
- Enable Auto-Repair for GKE Cluster Nodes
  Ensure that your Google Kubernetes Engine (GKE) clusters are using auto-repairing nodes.
- Enable Auto-Upgrade for GKE Cluster Nodes
  Ensure that your Google Kubernetes Engine (GKE) clusters are using automatic upgrades for their nodes.
- Enable GKE Cluster Node Encryption with Customer-Managed Keys
  Ensure that data at rest available on your GKE clusters is encrypted with Customer-Managed Keys.
- Enable Integrity Monitoring for GKE Cluster Nodes
  Ensure that Integrity Monitoring is enabled for your Google Kubernetes Engine (GKE) cluster nodes.
- Enable Secure Boot for GKE Cluster Nodes
  Ensure that Secure Boot feature is enabled for your Google Kubernetes Engine (GKE) cluster nodes.
- Restrict Network Access to GKE Clusters
  Ensure that your Google Kubernetes Engine (GKE) clusters are not exposed to the Internet.
- Use Shielded GKE Cluster Nodes
  Ensure that your GKE clusters nodes are shielded to protect against impersonation attacks.
GCP Resource Manager
- Define Allowed External IPs for VM Instances
  Ensure that "Define Allowed External IPs for VM Instances" policy is enforced at the GCP organization level.
- Disable Automatic IAM Role Grants for Default Service Accounts
  Ensure that "Disable Automatic IAM Grants for Default Service Accounts" policy is enforced.
- Disable Guest Attributes of Compute Engine Metadata
  Ensure that "Disable Guest Attributes of Compute Engine Metadata" policy is enabled at the GCP organization level.
- Disable Serial Port Access Support at Organization Level
  Ensure that "Disable VM serial port access" policy is enforced at the GCP organization level.
- Disable Service Account Key Upload
  Ensure that the key upload feature for Cloud IAM service accounts is disabled.
- Disable User-Managed Key Creation for Service Accounts
  Ensure that the user-managed key creation for Cloud IAM service accounts is disabled.
- Disable Workload Identity at Cluster Creation
  Ensure that "Disable Workload Identity Cluster Creation" policy is enabled for your GCP organizations.
- Enforce Detailed Audit Logging Mode
  Ensure that "Google Cloud Platform - Detailed Audit Logging Mode" policy is enabled for your GCP organizations.
- Enforce Uniform Bucket-Level Access at Organization Level
  Ensure that "Enforce uniform bucket-level access" policy is enabled at the Google Cloud Platform (GCP) organization level.
- Prevent Service Account Creation for Google Cloud Organizations
  Ensure that Cloud IAM service account creation is disabled at the organization level.
- Require OS Login
  Ensure that "Require OS Login" policy is enabled for your GCP organizations.
- Restrict Allowed Google Cloud APIs and Services
  Ensure that "Restrict allowed Google Cloud APIs and services" organization policy is enforced for your GCP organizations.
- Restrict Authorized Networks on Cloud SQL instances
  Ensure that "Restrict Authorized Networks on Cloud SQL instances" policy is enforced at GCP organization level.
- Restrict Default Google-Managed Encryption for Cloud SQL Instances
  Ensure that "Restrict Default Google-Managed Encryption for Cloud SQL Instances" policy is enforced at the GCP organization level.
- Restrict Load Balancer Creation Based on Load Balancer Types
  Ensure that "Restrict Load Balancer Creation Based on Load Balancer Types" policy is enforced at the GCP organization level.
- Restrict Public IP Access for Cloud SQL Instances at Organization Level
  Ensure that "Restrict Public IP access on Cloud SQL instances" policy is enabled at the GCP organization level.
- Restrict Shared VPC Subnetworks
  Ensure that "Restrict Shared VPC Subnetworks" policy is enforced for your GCP organizations.
- Restrict VPC Peering Usage
  Ensure that "Restrict VPC Peering Usage" policy is enforced for your GCP organizations.
- Restrict VPN Peer IPs
  Ensure that "Restrict VPN Peer IPs" constraint policy is enabled for your GCP organizations.
- Restrict Virtual Machine IP Forwarding
  Ensure that "Restrict VM IP Forwarding" policy is enforced at the GCP organization level.
- Restrict the Creation of Cloud Resources to Specific Locations
  Ensure that "Google Cloud Platform - Resource Location Restriction" constraint policy is enforced for your GCP organizations.
- Restricting the Use of Images
  Ensure that "Define Trusted Image Projects" policy is enforced for your GCP organizations.
- Skip Default VPC Network Creation
  Ensure that the creation of the default VPC network is disabled at the GCP organization level.
GCP VPC
- Check for DNSSEC Zone-Signing Algorithm in Use
  Ensure that DNSSEC key signing is not using RSASHA1 as signature algorithm.
- Check for Unrestricted DNS Access
  Ensure there are no VPC firewall rules that allow unrestricted inbound access on TCP and UDP port 53 (DNS).
- Check for Unrestricted FTP Access
  Ensure that no VPC firewall rules allow unrestricted inbound access on TCP port 20 and 21 (File Transfer Protocol – FTP).
- Check for Unrestricted ICMP Access
  Ensure that no VPC firewall rules allow unrestricted inbound access using Internet Control Message Protocol (ICMP).
- Check for Unrestricted Inbound Access on Uncommon Ports
  Ensure that no VPC firewall rules allow unrestricted ingress access to uncommon TCP/UDP ports.
- Check for Unrestricted MySQL Database Access
  Ensure there are no VPC firewall rules that allow unrestricted inbound access on TCP port 3306 (MySQL Database).
- Check for Unrestricted Oracle Database Access
  Ensure there are no VPC firewall rules that allow unrestricted inbound access on TCP port 1521 (Oracle Database).
- Check for Unrestricted Outbound Access on All Ports
  Ensure that VPC network firewall rules do not allow unrestricted outbound/egress access.
- Check for Unrestricted PostgreSQL Database Access
  Ensure that no VPC firewall rules allow unrestricted inbound access on TCP port 5432 (PostgreSQL Database Server).
- Check for Unrestricted RDP Access
  Ensure there are no VPC firewall rules that allow unrestricted inbound access on TCP port 3389 (RDP).
- Check for Unrestricted RPC Access
  Ensure there are no VPC firewall rules that allow unrestricted inbound access on TCP port 135 (Remote Procedure Call – RPC).
- Check for Unrestricted SMTP Access
  Ensure that no VPC firewall rules allow unrestricted inbound access on TCP port 25 (SMTP).
- Check for Unrestricted SQL Server Access
  Ensure that no VPC firewall rules allow unrestricted inbound access on TCP port 1433 (Microsoft SQL Server).
- Check for Unrestricted SSH Access
  Ensure that no VPC firewall rules allow unrestricted inbound access on TCP port 22 (SSH).
- Check for VPC Firewall Rules with Port Ranges
  Ensure there are no VPC network firewall rules with range of ports opened to allow incoming traffic.
- Enable Logging for VPC Firewall Rules
  Ensure that logging is enabled for your Virtual Private Cloud (VPC) firewall rules.
- Enable VPC Flow Logs for VPC Subnets
  Ensure that VPC Flow Logs feature is enabled for all VPC network subnets.
- Exclude Metadata from Firewall Logging
  Ensure that logging metadata is not included within your VPC firewall log files.