---
title: RDS DB instance publicly accessible
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: >-
  Docs > Datadog Security > Code Security > Infrastructure as Code (IaC)
  Security > IaC Security Rules > RDS DB instance publicly accessible
---

# RDS DB instance publicly accessible

{% callout %}
# Important note for users on the following Datadog sites: app.ddog-gov.com, us2.ddog-gov.com

{% alert level="danger" %}
This product is not supported for your selected [Datadog site](https://docs.datadoghq.com/getting_started/site.md). ({% placeholder "user-datadog-site-name" /%}).
{% /alert %}

{% /callout %}

## Metadata{% #metadata %}

**Id:** `terraform-alicloud-rds-instance-address-publicly-accessible` 

**Provider:** Alicloud

**Platform:** Terraform

**Severity:** Critical

**Category:** Insecure Configurations

#### Learn More{% #learn-more %}

- [Provider Reference](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/db_instance#address)

### Description{% #description %}

Replace `0.0.0.0/0` with a specific CIDR range for `address`, or remove the public access entry to restrict connectivity.

## Compliant Code Examples{% #compliant-code-examples %}

```terraform
resource "alicloud_db_instance" "example" {
  engine               = "MySQL"
  engine_version       = "5.6"
  instance_type        = "rds.mysql.s2.large"
  instance_storage     = "30"
  instance_charge_type = "Postpaid"
  instance_name        = var.name
  vswitch_id           = alicloud_vswitch.example.id
  monitoring_period    = "60"
  address              = "10.23.12.24/24"
}
```

```terraform
resource "alicloud_db_instance" "example" {
  engine               = "MySQL"
  engine_version       = "5.6"
  instance_type        = "rds.mysql.s2.large"
  instance_storage     = "30"
  instance_charge_type = "Postpaid"
  instance_name        = var.name
  vswitch_id           = alicloud_vswitch.example.id
  monitoring_period    = "60"
}
```

## Non-Compliant Code Examples{% #non-compliant-code-examples %}

```terraform
resource "alicloud_db_instance" "example" {
  engine               = "MySQL"
  engine_version       = "5.6"
  instance_type        = "rds.mysql.s2.large"
  instance_storage     = "30"
  instance_charge_type = "Postpaid"
  instance_name        = var.name
  vswitch_id           = alicloud_vswitch.example.id
  monitoring_period    = "60"
  address              = "0.0.0.0/0"
}
```