Microsoft AzureOverview
Enable connection throttling on PostgreSQL flexible servers.
Rationale
Enabling connection throttling helps the PostgreSQL Database to Set the verbosity of logged messages. This, in turn, generates query and error logs with respect to concurrent connections that 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.
Default Value
By default, connection_throttle.enable is disabled (set to off).
Remediation guidance
Remediate from Azure Portal
- Open the server using the
Open in Azurebutton - Under
Settings, clickServer parameters. - In the filter bar, type
connection_throttle.enable. - Set the
VALUEforconnection_throttle.enabletoON. - Click
Save.
Remediate from Azure CLI
Use the below command to enable connection_throttle.enable:
az postgres flexible-server parameter set --resource-group <resourceGroup> --server-name <serverName> --name connection_throttle.enable --value on
Remediate from PowerShell
Update-AzPostgreSqlFlexibleServerConfiguration -ResourceGroupName <resourceGroup> -ServerName <serverName> -Name connection_throttle.enable -Value on
Service-wide remediation
Recommended when many resources are affected: fix the platform baseline first so new resources inherit the secure setting, then remediate the existing flagged resources in batches.
Azure
Use management group or subscription Azure Policy assignments, remediation tasks where supported, landing-zone standards, and IaC modules so drift is prevented at scale.
Operational rollout
- Fix the baseline first at the account, subscription, project, cluster, or tenant scope that owns this control.
- Remediate the currently affected resources in batches, starting with internet-exposed and production assets.
- Re-scan and track approved exceptions with an owner and expiry date.
Query logic
These are the stored checks tied to this control.
Azure PostgreSQL Flex Servers Without Connection Throttling
Connectors
Covered asset types
Expected check: eq []
{
postgreSqlFlexibleServers(
where: {
configurations_SOME: {
name: "connection_throttle.enable"
value_MATCHES: "(?i)off"
}
}
) {
...AssetFragment
}
}
