diff --git a/specification/servicebus/resource-manager/Microsoft.ServiceBus/stable/2017-04-01/examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetCreate.json b/specification/servicebus/resource-manager/Microsoft.ServiceBus/stable/2017-04-01/examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetCreate.json
new file mode 100644
index 000000000000..2bc46fa6cb2d
--- /dev/null
+++ b/specification/servicebus/resource-manager/Microsoft.ServiceBus/stable/2017-04-01/examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetCreate.json
@@ -0,0 +1,103 @@
+{
+  "parameters": {
+    "namespaceName": "sdk-Namespace-6019",
+    "resourceGroupName": "ResourceGroup",
+    "api-version": "2017-04-01",
+    "subscriptionId": "Subscription",
+    "parameters": {
+      "properties": {
+        "defaultAction": "Deny",
+        "virtualNetworkRules": [
+          {
+            "subnet": {
+              "id": "/subscriptions/subscriptionid/resourcegroups/resourcegroupid/providers/Microsoft.Network/virtualNetworks/myvn/subnets/subnet2"
+            },
+            "ignoreMissingVnetServiceEndpoint": true
+          },
+          {
+            "subnet": {
+              "id": "/subscriptions/subscriptionid/resourcegroups/resourcegroupid/providers/Microsoft.Network/virtualNetworks/myvn/subnets/subnet3"
+            },
+            "ignoreMissingVnetServiceEndpoint": false
+          },
+          {
+            "subnet": {
+              "id": "/subscriptions/subscriptionid/resourcegroups/resourcegroupid/providers/Microsoft.Network/virtualNetworks/myvn/subnets/subnet6"
+            },
+            "ignoreMissingVnetServiceEndpoint": false
+          }
+        ],
+        "ipRules": [
+          {
+            "ipMask": "1.1.1.1",
+            "action": "Allow"
+          },
+          {
+            "ipMask": "1.1.1.2",
+            "action": "Allow"
+          },
+          {
+            "ipMask": "1.1.1.3",
+            "action": "Allow"
+          },
+          {
+            "ipMask": "1.1.1.4",
+            "action": "Allow"
+          },
+          {
+            "ipMask": "1.1.1.5",
+            "action": "Allow"
+          }
+        ]
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/854d368f-1828-428f-8f3c-f2affa9b2f7d/resourceGroups/resourcegroupid/providers/Microsoft.ServiceBus/namespaces/sdk-Namespace-9659/networkrulesets/default",
+        "name": "default",
+        "type": "Microsoft.ServiceBus/Namespaces/NetworkRuleSet",
+        "properties": {
+          "defaultAction": "Deny",
+          "virtualNetworkRules": [
+            {
+              "subnet": { "id": "/subscriptions/subscriptionid/resourcegroups/resourcegroupid/providers/Microsoft.Network/virtualNetworks/myvn/subnets/subnet2" },
+              "ignoreMissingVnetServiceEndpoint": true
+            },
+            {
+              "subnet": { "id": "/subscriptions/subscriptionid/resourcegroups/resourcegroupid/providers/Microsoft.Network/virtualNetworks/myvn/subnets/subnet3" },
+              "ignoreMissingVnetServiceEndpoint": false
+            },
+            {
+              "subnet": { "id": "/subscriptions/subscriptionid/resourcegroups/resourcegroupid/providers/Microsoft.Network/virtualNetworks/myvn/subnets/subnet6" },
+              "ignoreMissingVnetServiceEndpoint": false
+            }
+          ],
+          "ipRules": [
+            {
+              "ipMask": "1.1.1.1",
+              "action": "Allow"
+            },
+            {
+              "ipMask": "1.1.1.2",
+              "action": "Allow"
+            },
+            {
+              "ipMask": "1.1.1.3",
+              "action": "Allow"
+            },
+            {
+              "ipMask": "1.1.1.4",
+              "action": "Allow"
+            },
+            {
+              "ipMask": "1.1.1.5",
+              "action": "Allow"
+            }
+          ]
+        }
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/servicebus/resource-manager/Microsoft.ServiceBus/stable/2017-04-01/examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetGet.json b/specification/servicebus/resource-manager/Microsoft.ServiceBus/stable/2017-04-01/examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetGet.json
new file mode 100644
index 000000000000..a9659eeb10fc
--- /dev/null
+++ b/specification/servicebus/resource-manager/Microsoft.ServiceBus/stable/2017-04-01/examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetGet.json
@@ -0,0 +1,56 @@
+{
+  "parameters": {
+    "namespaceName": "sdk-Namespace-6019",
+    "resourceGroupName": "ResourceGroup",
+    "api-version": "2017-04-01",
+    "subscriptionId": "Subscription"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/subscriptionid/resourceGroups/resourcegroupid/providers/Microsoft.ServiceBus/namespaces/sdk-Namespace-9659/networkrulesets/default",
+        "name": "default",
+        "type": "Microsoft.ServiceBus/Namespaces/NetworkRuleSet",
+        "properties": {
+          "defaultAction": "Deny",
+          "virtualNetworkRules": [
+            {
+              "subnet": { "id": "/subscriptions/subscriptionid/resourcegroups/resourcegroupid/providers/Microsoft.Network/virtualNetworks/myvn/subnets/subnet2" },
+              "ignoreMissingVnetServiceEndpoint": true
+            },
+            {
+              "subnet": { "id": "/subscriptions/subscriptionid/resourcegroups/resourcegroupid/providers/Microsoft.Network/virtualNetworks/myvn/subnets/subnet3" },
+              "ignoreMissingVnetServiceEndpoint": false
+            },
+            {
+              "subnet": { "id": "/subscriptions/subscriptionid/resourcegroups/resourcegroupid/providers/Microsoft.Network/virtualNetworks/myvn/subnets/subnet6" },
+              "ignoreMissingVnetServiceEndpoint": false
+            }
+          ],
+          "ipRules": [
+            {
+              "ipMask": "1.1.1.1",
+              "action": "Allow"
+            },
+            {
+              "ipMask": "1.1.1.2",
+              "action": "Allow"
+            },
+            {
+              "ipMask": "1.1.1.3",
+              "action": "Allow"
+            },
+            {
+              "ipMask": "1.1.1.4",
+              "action": "Allow"
+            },
+            {
+              "ipMask": "1.1.1.5",
+              "action": "Allow"
+            }
+          ]
+        }
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/servicebus/resource-manager/Microsoft.ServiceBus/stable/2017-04-01/servicebus.json b/specification/servicebus/resource-manager/Microsoft.ServiceBus/stable/2017-04-01/servicebus.json
index ef9433dff693..4759d4311bbc 100644
--- a/specification/servicebus/resource-manager/Microsoft.ServiceBus/stable/2017-04-01/servicebus.json
+++ b/specification/servicebus/resource-manager/Microsoft.ServiceBus/stable/2017-04-01/servicebus.json
@@ -2983,7 +2983,7 @@
             }
           },
           "default": {
-            "description": "Eventhub error response describing why the operation failed.",
+            "description": "ServiceBus error response describing why the operation failed.",
             "schema": {
               "$ref": "#/definitions/ErrorResponse"
             }
@@ -2993,6 +2993,97 @@
           "nextLinkName": "nextLink"
         }
       }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ServiceBus/namespaces/{namespaceName}/networkRuleSets/default": {
+      "put": {
+        "tags": [
+          "Namespaces"
+        ],
+        "x-ms-examples": {
+          "NameSpaceNetworkRuleSetCreate": {
+            "$ref": "./examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetCreate.json"
+          }
+        },
+        "operationId": "Namespaces_CreateOrUpdateNetworkRuleSet",
+        "description": "Create or update NetworkRuleSet for a Namespace.",
+        "parameters": [
+          {
+            "$ref": "#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/NamespaceNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ApiVersionParameter"
+          },
+          {
+            "$ref": "#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "name": "parameters",
+            "in": "body",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/NetworkRuleSet"
+            },
+            "description": "The Namespace IpFilterRule."
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Namespace NetworkRuleSet successfully returned.",
+            "schema": {
+              "$ref": "#/definitions/NetworkRuleSet"
+            }
+          },
+          "default": {
+            "description": "ServiceBus error response describing why the operation failed.",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          }
+        }
+      },
+      "get": {
+        "tags": [
+          "Namespaces"
+        ],
+        "x-ms-examples": {
+          "NameSpaceNetworkRuleSetGet": {
+            "$ref": "./examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetGet.json"
+          }
+        },
+        "operationId": "Namespaces_GetNetworkRuleSet",
+        "description": "Gets NetworkRuleSet for a Namespace.",
+        "parameters": [
+          {
+            "$ref": "#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/NamespaceNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ApiVersionParameter"
+          },
+          {
+            "$ref": "#/parameters/SubscriptionIdParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Namespace NetworkRuleSet successfully returned.",
+            "schema": {
+              "$ref": "#/definitions/NetworkRuleSet"
+            }
+          },
+          "default": {
+            "description": "ServiceBus error response describing why the operation failed.",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          }
+        }
+      }
     }
   },
   "definitions": {
@@ -4408,6 +4499,96 @@
         }
       },
       "description": "The result of the List migrationConfigurations operation."
+    },
+    "Subnet": {
+      "properties": {
+        "id": {
+          "type": "string",
+          "description": "Resource ID of Virtual Network Subnet"
+        }
+      },
+      "required": [
+        "id"
+      ],
+      "description": "Properties supplied for Subnet"
+    },
+    "NWRuleSetIpRules": {
+      "x-ms-client-flatten": true,
+      "properties": {
+        "ipMask": {
+          "type": "string",
+          "description": "IP Mask"
+        },
+        "action": {
+          "type": "string",
+          "description": "The IP Filter Action",
+          "enum": [
+            "Allow"
+          ],
+          "x-ms-enum": {
+            "name": "NetworkRuleIPAction",
+            "modelAsString": true
+          },
+          "default": "Allow"
+        }
+      },
+      "description": "Description of NetWorkRuleSet - IpRules resource."
+    },
+    "NWRuleSetVirtualNetworkRules": {
+      "x-ms-client-flatten": true,
+      "properties": {
+        "subnet": {
+          "$ref": "#/definitions/Subnet",
+          "description": "Subnet properties"
+        },
+        "ignoreMissingVnetServiceEndpoint": {
+          "type": "boolean",
+          "description": "Value that indicates whether to ignore missing VNet Service Endpoint"
+        }
+      },
+      "description": "Description of VirtualNetworkRules - NetworkRules resource."
+    },
+    "NetworkRuleSet": {
+      "properties": {
+        "properties": {
+          "description": "NetworkRuleSet properties",
+          "x-ms-client-flatten": true,
+          "properties": {
+            "defaultAction": {
+              "type": "string",
+              "description": "Default Action for Network Rule Set",
+              "enum": [
+                "Allow",
+                "Deny"
+              ],
+              "x-ms-enum": {
+                "name": "DefaultAction",
+                "modelAsString": true
+              }
+            },
+            "virtualNetworkRules": {
+              "type": "array",
+              "items": {
+                "$ref": "#/definitions/NWRuleSetVirtualNetworkRules"
+              },
+              "description": "List VirtualNetwork Rules"
+            },
+            "ipRules": {
+              "type": "array",
+              "items": {
+                "$ref": "#/definitions/NWRuleSetIpRules"
+              },
+              "description": "List of IpRules"
+            }
+          }
+        }
+      },
+      "allOf": [
+        {
+          "$ref": "#/definitions/Resource"
+        }
+      ],
+      "description": "Description of NetworkRuleSet resource."
     }
   },
   "parameters": {