output/20260723_081532/govviz/ALZ_20260723_081601/Enterprise-Scale/src/resources/Microsoft.Authorization/policyDefinitions/Deny-Storage-NetworkAclsBypass.json

{
    "name": "Deny-Storage-NetworkAclsBypass",
    "type": "Microsoft.Authorization/policyDefinitions",
    "apiVersion": "2021-06-01",
    "scope": null,
    "properties": {
        "policyType": "Custom",
        "mode": "All",
        "displayName": "Network ACL bypass option should be restricted for Storage Accounts",
        "description": "Azure Storage accounts should restrict the bypass option for service-level network ACLs. Enforce this for increased data exfiltration protection.",
        "metadata": {
            "version": "1.0.0",
            "category": "Storage",
            "source": "https://github.com/Azure/Enterprise-Scale/",
            "alzCloudEnvironments": [
                "AzureCloud",
                "AzureChinaCloud",
                "AzureUSGovernment"
            ]
        },
        "parameters": {
            "effect": {
                "type": "String",
                "allowedValues": [
                    "Audit",
                    "Deny",
                    "Disabled"
                ],
                "defaultValue": "Deny",
                "metadata": {
                    "displayName": "Effect",
                    "description": "Enable or disable the execution of the policy"
                }
            },
            "allowedBypassOptions": {
                "type": "Array",
                "metadata": {
                    "displayName": "Allowed Bypass Options",
                    "description": "Specifies which options are allowed to bypass the vnet configuration"
                },
                "allowedValues": [
                    "None",
                    "Logging",
                    "Metrics",
                    "AzureServices",
                    "Logging, Metrics",
                    "Logging, AzureServices",
                    "Metrics, AzureServices",
                    "Logging, Metrics, AzureServices",
                    "Logging, Metrics, AzureServices"
                ],
                "defaultValue": [
                    "Logging",
                    "Metrics",
                    "AzureServices",
                    "Logging, Metrics",
                    "Logging, AzureServices",
                    "Metrics, AzureServices",
                    "Logging, Metrics, AzureServices",
                    "Logging, Metrics, AzureServices"
                ]
            }
        },
        "policyRule": {
            "if": {
                "allOf": [
                    {
                        "field": "type",
                        "equals": "Microsoft.Storage/storageAccounts"
                    },
                    {
                        "anyOf": [
                            {
                                "field": "Microsoft.Storage/storageAccounts/networkAcls.bypass",
                                "exists": "false"
                            },
                            {
                                "field": "Microsoft.Storage/storageAccounts/networkAcls.bypass",
                                "notIn": "[[parameters('allowedBypassOptions')]"
                            }
                        ]
                    }
                ]
            },
            "then": {
                "effect": "[[parameters('effect')]"
            }
        }
    }
}