> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/appsec-rules/iac-security/public-exposure/appsec-aws-89.md).

# AWS DMS replication instance is publicly accessible misconfiguration detected in code

## Rule Details

|                        |                                                       |
| ---------------------- | ----------------------------------------------------- |
| Cortex AppSec Rule ID  | APPSEC\_AWS\_89                                       |
| Category - Subcategory | Public Exposure - Database Endpoints                  |
| Provider               | AWS                                                   |
| Severity               | LOW                                                   |
| Framework              | CloudFormation, Serverless, Terraform, Terraform Plan |
| Mapped CSPM/KSPM Rule  | b6085a88-3c26-466d-9039-c225d754c5ae                  |

## Impact

AWS Database Migration Service (AWS DMS) is a service for migrating relational databases, data warehouses, NoSQL databases and other data stores. DMS can be used to migrate data into the AWS Cloud, between on-premises instances, or between combinations of cloud and on-premises environments. An AWS DMS replication instance can have one public IP address and one private IP address, just like an Amazon Elastic Compute Cloud (Amazon EC2) instance that has a public IP address. If you uncheck (disable) the box for Publicly accessible, then the replication instance has only a private IP address.

## How to Fix

*Resource:* AWS::DMS::ReplicationInstance

* *Arguments:* Properties.PubliclyAccessible - (Optional, Default: false) Specifies the accessibility options for the replication instance.

## A value of true represents an instance with a public IP address. A value of false represents an instance with a private IP address. \[source,go]

Resources: ReplicationInstance: Type: AWS::DMS::ReplicationInstance Properties: ...

* PubliclyAccessible: False

***


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