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# Firewall policy does not have IDPS mode set to deny misconfiguration detected in code

## Rule Details

|                        |                                    |
| ---------------------- | ---------------------------------- |
| Cortex AppSec Rule ID  | APPSEC\_AZURE\_220                 |
| Category - Subcategory | Public Exposure - Ingress Controls |
| Provider               | AZURE                              |
| Severity               | HIGH                               |
| Framework              | Terraform, Terraform Plan          |

## Impact

This rule is assessing whether a firewall policy in Azure has the Intrusion Detection and Prevention System (IDPS) mode set to 'deny'. The IDPS is crucial for network security as it actively monitors for suspicious activities or policy violations and takes steps to prevent them. If the IDPS mode is not set to 'deny', it could leave the network vulnerable to potential threats or attacks. Setting the IDPS mode to 'deny' thus enhances security by automatically blocking any detected intrusions, thereby minimizing potential damage.

## How to Fix

*Resource:* azurerm\_firewall\_policy

* *Arguments:* intrusion\_detection.mode

## \[source,go]

resource "azurerm\_firewall\_policy" "pass" { name = "pass" resource\_group\_name = azurerm\_resource\_group.example.name location = azurerm\_resource\_group.example.location intrusion\_detection {

* mode = "Deny" } }----


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