deny_nsg_outbound_allow_all.json

{
  "type": "Microsoft.Authorization/policyDefinitions",
  "name": "deny_nsg_outbound_allow_all",
  "properties": {
    "metadata": {
      "category": "Network"
    },
    "parameters": {
      "effect": {
        "type": "String",
        "defaultValue": "Deny",
        "allowedValues": [
          "Audit",
          "Deny",
          "Disabled"
        ],
        "metadata": {
          "displayName": "Effect",
          "description": "The effect determines what happens when the policy rule is evaluated to match"
        }
      }
    },
    "policyRule": {
      "if": {
        "allOf": [
          {
            "field": "type",
            "equals": "Microsoft.Network/networkSecurityGroups/securityRules"
          },
          {
            "allOf": [
              {
                "field": "Microsoft.Network/networkSecurityGroups/securityRules/access",
                "equals": "Allow"
              },
              {
                "field": "Microsoft.Network/networkSecurityGroups/securityRules/direction",
                "equals": "Outbound"
              },
              {
                "anyOf": [
                  {
                    "field": "Microsoft.Network/networkSecurityGroups/securityRules/destinationPortRange",
                    "equals": "*"
                  },
                  {
                    "not": {
                      "field": "Microsoft.Network/networkSecurityGroups/securityRules/destinationPortRanges[*]",
                      "notEquals": "*"
                    }
                  }
                ]
              },
              {
                "anyOf": [
                  {
                    "field": "Microsoft.Network/networkSecurityGroups/securityRules/sourceAddressPrefix",
                    "in": [
                      "*",
                      "Internet"
                    ]
                  },
                  {
                    "not": {
                      "field": "Microsoft.Network/networkSecurityGroups/securityRules/sourceAddressPrefixes[*]",
                      "notIn": [
                        "*",
                        "Internet"
                      ]
                    }
                  }
                ]
              }
            ]
          }
        ]
      },
      "then": {
        "effect": "[parameters('effect')]"
      }
    }
  }
}