Control: 6.4 Ensure That the Cloud SQL Database Instance Requires All Incoming Connections To Use SSL

Description

It is recommended to enforce all incoming connections to SQL database instance to use SSL.

SQL database connections if successfully trapped (MITM); can reveal sensitive data like credentials, database queries, query outputs etc. For security, it is recommended to always use SSL encryption when connecting to your instance. This recommendation is applicable for Postgresql, MySql generation 1, MySql generation 2 and SQL Server 2017 instances.

Remediation

From Console

1. Go to https://console.cloud.google.com/sql/instances.
2. Click on an instance name to see its configuration overview.
3. In the left-side panel, select Connections.
4. In the security section, select SSL mode as Allow only SSL connections.
5. Under Configure SSL server certificates click Create new certificate and save the setting.

From Command Line

1. To enforce SSL encryption for an instance run the command:

gcloud sql instances patch INSTANCE_NAME --ssl-mode= ENCRYPTED_ONLY

Note:RESTART is required for type MySQL Generation 1 Instances (backendType: FIRST_GEN) to get this configuration in effect.

Default Value

By default parameter settings: ipConfiguration: requireSsl is not set which is equivalent to sslMode:ALLOW_UNENCRYPTED_AND_ENCRYPTED..