cis-azure-database-6-3

name	cis-azure-database-6.3
description	Ensure 'Public Network Access' is 'Disabled' for Azure Database for PostgreSQL
category	cis-azure-database
version	2.0.0
author	cyberstrike-official
tags	["cis","azure","postgresql","database"]
cis_id	6.3
cis_benchmark	CIS Microsoft Azure Database Services Benchmark v2.0.0
tech_stack	["azure"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

6.3 Ensure 'Public Network Access' is 'Disabled' for Azure Database for PostgreSQL (Automated)

Profile Applicability

• Level 2

Description

Setting public networks to disabled prevents requests from the public internet.

Rationale

Disabling public network access prevents Azure Database for PostgreSQL servers from communicating with the public internet and requires the use of Private endpoints for granular network control and segmentation.

Impact

Disabling 'Public Network Access' forces the requirement of the use of Private Endpoints for network connectivity which will require some additional consideration from a network architecture perspective and will introduce cost based on the inbound/outbound data being processed by the Private Endpoint.

Audit Procedure

Audit from Azure Portal

1. From Azure Database for PostgreSQL select the database you wish to audit.
2. In the left column expand > Settings.
3. Select Networking.
4. Ensure that Public network access is not selected.

Audit from PowerShell

Run the following command with the identifying details for your subscription:

Get-AzPostgreSqlFlexibleServer -name <servername> -ResourceGroupName <resourcegroupname> | Select-Object -property NetworkPublicNetworkAccess

Ensure that Public network access is Disabled.

Audit from Azure Policy

Policy ID: b52376f7-9612-48a1-81cd-1f0e2bc4b3e5 Name: 'Public network access should be disabled for PostgreSQL flexible servers'

Expected Result

Public network access should be Disabled.

Remediation

Remediate from Azure Portal

1. From Azure Database for PostgreSQL select the database you wish to audit.
2. In the left column expand > Settings.
3. Select Networking.
4. Uncheck/deselect the Public network access option.
5. Click Save.

Remediate from PowerShell

Update-AzPostgreSqlFlexibleServer -name <servername> -ResourceGroupName <resourcegroupname> -PublicNetworkAccess "Disabled"

Default Value

By default, Public network access is enabled for Azure Database for PostgreSQL.