LinuxNoPasswordForSSH_AINE.json

{
  "properties": {
    "displayName": "Authentication to Linux machines should require SSH keys",
    "policyType": "BuiltIn",
    "mode": "Indexed",
    "description": "Although SSH itself provides an encrypted connection, using passwords with SSH still leaves the VM vulnerable to brute-force attacks. The most secure option for authenticating to an Azure Linux virtual machine over SSH is with a public-private key pair, also known as SSH keys. Learn more: https://docs.microsoft.com/azure/virtual-machines/linux/create-ssh-keys-detailed.",
    "metadata": {
      "version": "3.2.0",
      "category": "Guest Configuration",
      "requiredProviders": [
        "Microsoft.GuestConfiguration"
      ],
      "guestConfiguration": {
        "name": "LinuxNoPasswordForSSH",
        "version": "1.*"
      }
    },
    "version": "3.2.0",
    "parameters": {
      "IncludeArcMachines": {
        "type": "string",
        "metadata": {
          "displayName": "Include Arc connected servers",
          "description": "By selecting this option, you agree to be charged monthly per Arc connected machine.",
          "portalReview": "true"
        },
        "allowedValues": [
          "true",
          "false"
        ],
        "defaultValue": "false"
      },
      "effect": {
        "type": "string",
        "metadata": {
          "displayName": "Effect",
          "description": "Enable or disable the execution of this policy"
        },
        "allowedValues": [
          "AuditIfNotExists",
          "Disabled"
        ],
        "defaultValue": "AuditIfNotExists"
      }
    },
    "policyRule": {
      "if": {
        "anyOf": [
          {
            "allOf": [
              {
                "field": "type",
                "equals": "Microsoft.Compute/virtualMachines"
              },
              {
                "anyOf": [
                  {
                    "field": "Microsoft.Compute/imagePublisher",
                    "in": [
                      "microsoft-aks",
                      "qubole-inc",
                      "datastax",
                      "couchbase",
                      "scalegrid",
                      "checkpoint",
                      "paloaltonetworks",
                      "debian",
                      "credativ"
                    ]
                  },
                  {
                    "allOf": [
                      {
                        "field": "Microsoft.Compute/imagePublisher",
                        "equals": "OpenLogic"
                      },
                      {
                        "field": "Microsoft.Compute/imageSKU",
                        "notLike": "6*"
                      }
                    ]
                  },
                  {
                    "allOf": [
                      {
                        "field": "Microsoft.Compute/imagePublisher",
                        "equals": "Oracle"
                      },
                      {
                        "field": "Microsoft.Compute/imageSKU",
                        "notLike": "6*"
                      }
                    ]
                  },
                  {
                    "allOf": [
                      {
                        "field": "Microsoft.Compute/imagePublisher",
                        "equals": "RedHat"
                      },
                      {
                        "field": "Microsoft.Compute/imageSKU",
                        "notLike": "6*"
                      }
                    ]
                  },
                  {
                    "allOf": [
                      {
                        "field": "Microsoft.Compute/imagePublisher",
                        "equals": "center-for-internet-security-inc"
                      },
                      {
                        "field": "Microsoft.Compute/imageOffer",
                        "notLike": "cis-win*"
                      }
                    ]
                  },
                  {
                    "allOf": [
                      {
                        "field": "Microsoft.Compute/imagePublisher",
                        "equals": "Suse"
                      },
                      {
                        "field": "Microsoft.Compute/imageSKU",
                        "notLike": "11*"
                      }
                    ]
                  },
                  {
                    "allOf": [
                      {
                        "field": "Microsoft.Compute/imagePublisher",
                        "equals": "Canonical"
                      },
                      {
                        "field": "Microsoft.Compute/imageSKU",
                        "notLike": "12*"
                      }
                    ]
                  },
                  {
                    "allOf": [
                      {
                        "field": "Microsoft.Compute/imagePublisher",
                        "equals": "microsoft-dsvm"
                      },
                      {
                        "field": "Microsoft.Compute/imageOffer",
                        "notLike": "dsvm-win*"
                      }
                    ]
                  },
                  {
                    "allOf": [
                      {
                        "field": "Microsoft.Compute/imagePublisher",
                        "equals": "cloudera"
                      },
                      {
                        "field": "Microsoft.Compute/imageSKU",
                        "notLike": "6*"
                      }
                    ]
                  },
                  {
                    "allOf": [
                      {
                        "field": "Microsoft.Compute/imagePublisher",
                        "equals": "microsoft-ads"
                      },
                      {
                        "field": "Microsoft.Compute/imageOffer",
                        "like": "linux*"
                      }
                    ]
                  },
                  {
                    "allOf": [
                      {
                        "anyOf": [
                          {
                            "field": "Microsoft.Compute/virtualMachines/osProfile.linuxConfiguration",
                            "exists": "true"
                          },
                          {
                            "field": "Microsoft.Compute/virtualMachines/storageProfile.osDisk.osType",
                            "like": "Linux*"
                          }
                        ]
                      },
                      {
                        "anyOf": [
                          {
                            "field": "Microsoft.Compute/imagePublisher",
                            "exists": "false"
                          },
                          {
                            "field": "Microsoft.Compute/imagePublisher",
                            "notIn": [
                              "OpenLogic",
                              "RedHat",
                              "credativ",
                              "Suse",
                              "Canonical",
                              "microsoft-dsvm",
                              "cloudera",
                              "microsoft-ads",
                              "center-for-internet-security-inc",
                              "Oracle",
                              "AzureDatabricks",
                              "azureopenshift"
                            ]
                          }
                        ]
                      }
                    ]
                  }
                ]
              }
            ]
          },
          {
            "allOf": [
              {
                "value": "[parameters('IncludeArcMachines')]",
                "equals": "true"
              },
              {
                "anyOf": [
                  {
                    "allOf": [
                      {
                        "field": "type",
                        "equals": "Microsoft.HybridCompute/machines"
                      },
                      {
                        "field": "Microsoft.HybridCompute/imageOffer",
                        "like": "linux*"
                      }
                    ]
                  },
                  {
                    "allOf": [
                      {
                        "field": "type",
                        "equals": "Microsoft.ConnectedVMwarevSphere/virtualMachines"
                      },
                      {
                        "field": "Microsoft.ConnectedVMwarevSphere/virtualMachines/osProfile.osType",
                        "like": "linux*"
                      }
                    ]
                  }
                ]
              }
            ]
          }
        ]
      },
      "then": {
        "effect": "[parameters('effect')]",
        "details": {
          "type": "Microsoft.GuestConfiguration/guestConfigurationAssignments",
          "name": "LinuxNoPasswordForSSH",
          "existenceCondition": {
            "field": "Microsoft.GuestConfiguration/guestConfigurationAssignments/complianceStatus",
            "equals": "Compliant"
          }
        }
      }
    },
    "versions": [
      "3.2.0",
      "3.1.0"
    ]
  },
  "id": "/providers/Microsoft.Authorization/policyDefinitions/630c64f9-8b6b-4c64-b511-6544ceff6fd6",
  "name": "630c64f9-8b6b-4c64-b511-6544ceff6fd6"
}