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Server parameter 'connection_throttling' is set to 'ON' for PostgreSQL Database Server

azure.dbforpostgresql

Set up the azure.dbforpostgresql integration.

Description

Enable connection_throttling on PostgreSQL Servers.

Rationale

Enabling connection_throttling helps the PostgreSQL Database to Set the verbosity of logged messages which generates query and error logs about concurrent connections. Too many concurrent connections could lead to a successful Denial of Service (DoS) attack by exhausting connection resources. A system can also fail or be degraded by an overload of legitimate users. Query and error logs can be used to identify, troubleshoot, and repair configuration errors and sub-optimal performance.

Remediation

From the console

  1. Login to Azure Portal using https://portal.azure.com
  2. Go to Azure Database for PostgreSQL server
  3. For each database, click on Server parameters
  4. Search for connection_throttling.
  5. Click ON and save.

Alternatively, use the Azure Command Line Interface and run the below command to update connection_throttling configuration:

az postgres server configuration set --resource-group <resourceGroupName> --server-name <serverName> --name connection_throttling --value on

References

  1. https://docs.microsoft.com/en-us/rest/api/postgresql/configurations/listbyserver
  2. https://docs.microsoft.com/en-us/azure/postgresql/howto-configure-server-parameters-using-portal
  3. https://docs.microsoft.com/en-us/azure/security/benchmarks/security-controls-v2-logging-threat-detection#lt-4-enable-logging-for-azure-resources

CIS Controls

Version 7 6.2 Activate logging: Ensure that local logging has been enabled on all systems and networking devices.