> 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/ai-and-machine-learning/appsec2-azure-19.md).

# Azure Synapse workspaces have IP firewall rules attached misconfiguration detected in code

## Rule Details

|                        |                                       |
| ---------------------- | ------------------------------------- |
| Cortex AppSec Rule ID  | APPSEC2\_AZURE\_19                    |
| Category - Subcategory | Public Exposure - Ingress Controls    |
| Provider               | AZURE                                 |
| Severity               | LOW                                   |
| Framework              | ARM, Bicep, Terraform, Terraform Plan |

## Impact

IP firewall rules in Azure Synapse are used to control inbound and outbound network traffic to and from your workspace. By attaching IP firewall rules to your workspace, you can control which IP addresses or ranges have access to your workspace and what actions they can perform. However, attaching IP firewall rules to your workspace can also introduce potential security risks because it allows you to specify specific IP addresses or ranges that have access to your workspace. If an attacker is able to determine the IP address of your workspace, they could potentially gain access to it if the IP address is included in the firewall rules.

## How to Fix

**Terraform**

* **Resource:** azurerm\_synapse\_firewall\_rule, azurerm\_resource\_group, azurerm\_synapse\_workspace
* **Arguments:** synapse\_workspace\_id (of *azurerm\_synapse\_firewall\_rule* )

```go
resource "azurerm_resource_group" "example" {
  name     = "example-resources"
  location = "West Europe"
}

resource "azurerm_synapse_workspace" "workspace_good" {
  name                                 = "example"
  sql_administrator_login              = "sqladminuser"
  sql_administrator_login_password     = "H@Sh1CoR3!"
  managed_virtual_network_enabled      = true
  tags = {
    Env = "production"
  }
}


resource "azurerm_synapse_firewall_rule" "firewall_rule" {
  name                 = "AllowAll"
  synapse_workspace_id = azurerm_synapse_workspace.workspace_bad.id
  start_ip_address     = "0.0.0.0"
  end_ip_address       = "255.255.255.255"
}
```


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