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Cis Azure Database 6.9

DevOps & Security
cis-azure-database-6.9

Cis Azure Database 6.9 is an Agent Skill for devops & security published in the CyberStrikeus/CyberStrike repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

Ensure server parameter 'log_connections' is set to 'ON' for PostgreSQL servers

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6.9 Ensure server parameter 'log_connections' is set to 'ON' for PostgreSQL servers (Automated)

Profile Applicability

  • Level 1

Description

Enable log_connections on PostgreSQL servers.

Rationale

Enabling log_connections helps PostgreSQL Database to log attempted connection to the server, as well as successful completion of client authentication. Log data can be used to identify, troubleshoot, and repair configuration errors and suboptimal performance.

Impact

None documented.

Audit Procedure

Audit from Azure Portal

  1. Login to Azure Portal using https://portal.azure.com.
  2. Go to Azure Database for PostgreSQL servers.
  3. For each server, under Settings, click Server parameters.
  4. In the filter bar, type log_connections.
  5. Ensure that log_connections is set to ON.

Audit from Azure CLI

Ensure the below command returns a Value of on:

az postgres flexible-server parameter show --resource-group <resourceGroup> --server-name <serverName> --name log_connections

Audit from PowerShell

Ensure the below command returns a Value of on:

Get-AzPostgreSqlFlexibleServerConfiguration -ResourceGroupName <resourceGroup> -ServerName <serverName> -Name log_connections

Audit from Azure Policy

Policy ID: 086709ac-11b5-478d-a893-9567a16d2ae3 Name: 'Log connections should be enabled for PostgreSQL flexible servers'

Expected Result

The log_connections server parameter should be set to ON.

Remediation

Remediate from Azure Portal

  1. Login to Azure Portal using https://portal.azure.com.
  2. Go to Azure Database for PostgreSQL servers.
  3. For each server, under Settings, click Server parameters.
  4. In the filter bar, type log_connections.
  5. Set log_connections to ON.
  6. Click Save.

Remediate from Azure CLI

Use the below command to update log_connections configuration:

az postgres flexible-server parameter set --resource-group <resourceGroupName> --server-name <serverName> --name log_connections --value on

Remediate from PowerShell

Use the below command to update log_connections configuration:

Update-AzPostgreSqlFlexibleServerConfiguration -ResourceGroupName <ResourceGroupName> -ServerName <ServerName> -Name log_connections -Value on

Default Value

By default, log_connections is disabled (set to off).

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://learn.microsoft.com/en-us/security/benchmark/azure/mcsb-logging-threat-detection#lt-3-enable-logging-for-security-investigation
  4. https://learn.microsoft.com/en-us/powershell/module/az.postgresql/get-azpostgresqlconfiguration
  5. https://learn.microsoft.com/en-us/powershell/module/az.postgresql/update-azpostgresqlconfiguration

Profile

  • Level 1