> 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/appsec2-azure-29.md).

# Azure AKS cluster Azure CNI networking not enabled misconfiguration detected in code

## Rule Details

|                        |                                      |
| ---------------------- | ------------------------------------ |
| Cortex AppSec Rule ID  | APPSEC2\_AZURE\_29                   |
| Category - Subcategory | Public Exposure - VPC VCN VNet       |
| Provider               | AZURE                                |
| Severity               | LOW                                  |
| Framework              | Terraform, Terraform Plan            |
| Mapped CSPM/KSPM Rule  | bc288480-0d31-4ccc-bc0e-3c4dc185f5a1 |

## Impact

This rule is checking to ensure that an Azure Kubernetes Service (AKS) cluster has Azure Container Network Interface (CNI) networking enabled. If not enabled, it presents a security risk. Azure CNI is a networking interface for connecting containers managed by Kubernetes. It allows them to have an IP address that is safe and secure from the Azure network, allowing the pods to directly access services over the Azure Virtual Network infrastructure. This reduces the risk of network intrusion and simplifies the network management within the cluster, thereby improving overall security.

## How to Fix

*Resource:* azurerm\_kubernetes\_cluster

* *Arguments:* network\_profile.network\_plugin

To fix this issue, you need to specify `azure` as the value of `network_plugin` in the `network_profile` block under `azurerm_kubernetes_cluster` resource.

## The above code is secure because it uses Azure Container Networking Interface (CNI) for networking which provides VNET networking capabilities to Pods in Azure Kubernetes Service(AKS). This grants pods with their own IP addresses from a subnet and full network access to other network resources. This can be essential for running security-sensitive workloads or workloads requiring network policies. \[source,go]

resource "azurerm\_kubernetes\_cluster" "aks\_example" { // other configuration

## network\_profile { network\_plugin = "azure" // other configuration } }


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://cortex-docs.paloaltonetworks.com/appsec-rules/iac-security/public-exposure/appsec2-azure-29.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.