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Create ACLs on an NNI in Azure Operator Nexus

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In Azure Operator Nexus, access control lists (ACLs) for Permit and Deny actions at a network-to-network interconnect (NNI) level help protect Secure Shell (SSH) access on the management virtual private network (VPN). You create ingress and egress ACLs before the creation of NNI resources and then reference those ACLs in the NNI payload. You need to create referenced ingress and egress ACLs before you provision the network fabric.

These are the high-level steps for creating an ACL on an NNI:

  1. Create NNI ingress and egress ACLs.
  2. Update the Azure Resource Manager resource reference in a management NNI.
  3. Create an NNI and provision the network fabric.

Parameter usage guidance

Parameter Description Example or range
defaultAction Default action to be taken. If you don't define it, traffic is permitted. "defaultAction": "Permit"
resource-group Resource group of the network fabric. nfresourcegroup
resource-name Name of the ACL. example-ingressACL
vlanGroups List of virtual local area network (VLAN) groups.
vlans List of VLANs that need to be matched.
match-configurations Name of the match configuration. example_acl. Spaces and the ampersand character (&) aren't supported.
matchConditions Conditions required to be matched.
ttlValues Time to live (TTL). 0-255
dscpMarking Differentiated Services Code Point (DSCP) markings that need to be matched. 0-63
portCondition Port condition that needs to be matched.
portType Port type that needs to be matched. Example: SourcePort. Allowed values: DestinationPort, SourcePort.
protocolTypes Protocols that need to be matched. [tcp, udp, range[1-2, 1, 2]]. If it's a protocol number, it should be in the range of 1-255.
vlanMatchCondition VLAN match condition that needs to be matched.
layer4Protocol Layer 4 protocol. Should be either TCP or UDP.
ipCondition IP condition that needs to be matched.
actions Action to be taken based on a match condition. Example: permit.
configuration-type Configuration type, which can be inline or file. At this time, Azure Operator Nexus supports only inline. Example: inline.

You should also be aware of these restrictions:

  • Inline ports and inline VLANs are a static way of defining the ports or VLANs by using azcli.
  • portGroupNames and vlanGroupNames are dynamic ways of defining ports and VLANs.
  • Inline ports and portGroupNames together aren't allowed.
  • Inline VLANs and vlanGroupNames together aren't allowed.
  • ipGroupNames and ipPrefixValues together aren't allowed.
  • Egress ACLs don't support IP options, IP length, fragment, EtherType, DSCP marking, or TTL values.
  • Ingress ACLs don't support EtherType options.

Create an ingress ACL

To create an ingress ACL, you can use the following Azure CLI command. This command creates an ingress ACL with the specified configurations and provides the expected result as output. Adjust the parameters as needed for your use case.

az networkfabric acl create
--resource-group "example-rg"
--location "eastus2euap"
--resource-name "example-Ipv4ingressACL"
--configuration-type "Inline"
--default-action "Permit"
--dynamic-match-configurations "[{ipGroups:[{name:'example-ipGroup',ipAddressType:IPv4,ipPrefixes:['10.20.3.1/20']}],vlanGroups:[{name:'example-vlanGroup',vlans:['20-30']}],portGroups:[{name:'example-portGroup',ports:['100-200']}]}]"
--match-configurations "[{matchConfigurationName:'example-match',sequenceNumber:123,ipAddressType:IPv4,matchConditions:[{etherTypes:['0x1'],fragments:['0xff00-0xffff'],ipLengths:['4094-9214'],ttlValues:[23],dscpMarkings:[32],portCondition:{flags:[established],portType:SourcePort,layer4Protocol:TCP,ports:['1-20']},protocolTypes:[TCP],vlanMatchCondition:{vlans:['20-30'],innerVlans:[30]},ipCondition:{type:SourceIP,prefixType:Prefix,ipPrefixValues:['10.20.20.20/12']}}],actions:[{type:Count,counterName:'example-counter'}]}]"

Expected output

{
    "properties": {
        "lastSyncedTime": "2023-06-17T08:56:23.203Z",
        "configurationState": "Succeeded",
        "provisioningState": "Accepted",
        "administrativeState": "Enabled",
        "annotation": "annotation",
        "configurationType": "File",
        "aclsUrl": "https://ACL-Storage-URL",
        "matchConfigurations": [{
            "matchConfigurationName": "example-match",
            "sequenceNumber": 123,
            "ipAddressType": "IPv4",
            "matchConditions": [{
                "etherTypes": ["0x1"],
                "fragments": ["0xff00-0xffff"],
                "ipLengths": ["4094-9214"],
                "ttlValues": [23],
                "dscpMarkings": [32],
                "portCondition": {
                    "flags": ["established"],
                    "portType": "SourcePort",
                    "l4Protocol": "TCP",
                    "ports": ["1-20"],
                    "portGroupNames": ["example-portGroup"]
                },
                "protocolTypes": ["TCP"],
                "vlanMatchCondition": {
                    "vlans": ["20-30"],
                    "innerVlans": [30],
                    "vlanGroupNames": ["example-vlanGroup"]
                },
                "ipCondition": {
                    "type": "SourceIP",
                    "prefixType": "Prefix",
                    "ipPrefixValues": ["10.20.20.20/12"],
                    "ipGroupNames": ["example-ipGroup"]
                }
            }]
        }],
        "actions": [{
            "type": "Count",
            "counterName": "example-counter"
        }]
    },
    "tags": {
        "keyID": "KeyValue"
    },
    "location": "eastUs",
    "id": "/subscriptions/xxxxxx/resourceGroups/resourcegroupname/providers/Microsoft.ManagedNetworkFabric/accessControlLists/acl",
    "name": "example-Ipv4ingressACL",
    "type": "microsoft.managednetworkfabric/accessControlLists",
    "systemData": {
        "createdBy": "[email protected]",
        "createdByType": "User",
        "createdAt": "2023-06-09T04:51:41.251Z",
        "lastModifiedBy": "UserId",
        "lastModifiedByType": "User",
        "lastModifiedAt": "2023-06-09T04:51:41.251Z"
    }
}

Create an egress ACL

To create an egress ACL, you can use the following Azure CLI command. This command creates an egress ACL with the specified configurations and provides the expected result as output. Adjust the parameters as needed for your use case.

az networkfabric acl create
--resource-group "example-rg"
--location "eastus2euap"
--resource-name "example-Ipv4egressACL"
--configuration-type "File"
--acls-url "https://ACL-Storage-URL"
--default-action "Permit"
--dynamic-match-configurations "[{ipGroups:[{name:'example-ipGroup',ipAddressType:IPv4,ipPrefixes:['10.20.3.1/20']}],vlanGroups:[{name:'example-vlanGroup',vlans:['20-30']}],portGroups:[{name:'example-portGroup',ports:['100-200']}]}]"

Expected output

{
    "properties": {
        "lastSyncedTime": "2023-06-17T08:56:23.203Z",
        "configurationState": "Succeeded",
        "provisioningState": "Accepted",
        "administrativeState": "Enabled",
        "annotation": "annotation",
        "configurationType": "File",
        "aclsUrl": "https://ACL-Storage-URL",
        "dynamicMatchConfigurations": [{
            "ipGroups": [{
                "name": "example-ipGroup",
                "ipAddressType": "IPv4",
                "ipPrefixes": ["10.20.3.1/20"]
            }],
            "vlanGroups": [{
                "name": "example-vlanGroup",
                "vlans": ["20-30"]
            }],
            "portGroups": [{
                "name": "example-portGroup",
                "ports": ["100-200"]
            }]
        }]
    },
    "tags": {
        "keyID": "KeyValue"
    },
    "location": "eastUs",
    "id": "/subscriptions/xxxxxx/resourceGroups/resourcegroupname/providers/Microsoft.ManagedNetworkFabric/accessControlLists/acl",
    "name": "example-Ipv4egressACL",
    "type": "microsoft.managednetworkfabric/accessControlLists",
    "systemData": {
        "createdBy": "[email protected]",
        "createdByType": "User",
        "createdAt": "2023-06-09T04:51:41.251Z",
        "lastModifiedBy": "UserId",
        "lastModifiedByType": "User",
        "lastModifiedAt": "2023-06-09T04:51:41.251Z"
    }
}

Update the Resource Manager reference

This step enables the creation of ACLs (ingress and egress if a reference is provided) during the creation of the NNI resource. After you create the NNI and before you provision the network fabric, you can perform re-put on the NNI.

  • ingressAclId: Reference ID for the ingress ACL.
  • egressAclId: Reference ID for the egress ACL.

To get the Resource Manager resource ID, go to the resource group of the subscription that you're using.

The following command updates the Resource Manager reference for the NNI resource by associating it with the provided ingress and egress ACLs. Adjust the parameters as needed for your use case.

az networkfabric nni create
--resource-group "example-rg"
--fabric "example-fabric"
--resource-name "example-nniwithACL"
--nni-type "CE"
--is-management-type "True"
--use-option-b "True"
--layer2-configuration "{interfaces:['/subscriptions/xxxxx-xxxx-xxxx-xxxx-xxxxx/resourceGroups/example-rg/providers/Microsoft.ManagedNetworkFabric/networkDevices/example-networkDevice/networkInterfaces/example-interface'],mtu:1500}"
--option-b-layer3-configuration "{peerASN:28,vlanId:501,primaryIpv4Prefix:'10.18.0.124/30',secondaryIpv4Prefix:'10.18.0.128/30',primaryIpv6Prefix:'10:2:0:124::400/127',secondaryIpv6Prefix:'10:2:0:124::402/127'}"
--ingress-acl-id "/subscriptions/xxxxx-xxxx-xxxx-xxxx-xxxxx/resourceGroups/example-rg/providers/Microsoft.ManagedNetworkFabric/accesscontrollists/example-Ipv4ingressACL"
--egress-acl-id "/subscriptions/xxxxx-xxxx-xxxx-xxxx-xxxxx/resourceGroups/example-rg/providers/Microsoft.ManagedNetworkFabric/accesscontrollists/example-Ipv4egressACL"

Show ACL details

To display the details of a specified ACL, use the following command:

az networkfabric acl show --resource-group "example-rg" --resource-name "example-acl"

List ACLs

To list all ACLs within a specified resource group, use the following command:

az networkfabric acl list --resource-group "ResourceGroupName"

Create ACLs on the ISD external network

Use the following information to create ingress and egress ACLs for the isolation domain (ISD) external network. Then, update the Resource Manager resource reference for the external network.

Create an egress ACL for the ISD external network

To create an egress ACL for the specified ISD external network with the provided configuration, use the following command. Adjust the parameters as needed for your use case.

az networkfabric acl create
--resource-group "example-rg"
--location "eastus2euap"
--resource-name "example-Ipv4egressACL"
--annotation "annotation"
--configuration-type "Inline"
--default-action "Deny"
--match-configurations "[{matchConfigurationName:'L3ISD_EXT_OPTA_EGRESS_ACL_IPV4_CE_PE',sequenceNumber:1110,ipAddressType:IPv4,matchConditions:[{ipCondition:{type:SourceIP,prefixType:Prefix,ipPrefixValues:['10.18.0.124/30','10.18.0.128/30','10.18.30.16/30','10.18.30.20/30']}},{ipCondition:{type:DestinationIP,prefixType:Prefix,ipPrefixValues:['10.18.0.124/30','10.18.0.128/30','10.18.30.16/30','10.18.30.20/30']}}],actions:[{type:Count}]}]"

Expected output

Upon successful execution, the command returns information about the created ACL in the following format. This output includes details about the configuration and state.

{
    "administrativeState": "Disabled",
    "annotation": "annotation",
    "configurationState": "Succeeded",
    "configurationType": "Inline",
    "defaultAction": "Deny",
    "id": "/subscriptions/xxxxx-xxxx-xxxx-xxxx-xxxxx/resourceGroups/example-rg/providers/Microsoft.ManagedNetworkFabric/accessControlLists/example-Ipv4egressACL",
    "location": "eastus2euap",
    "matchConfigurations": [
        {
            "actions": [
                {
                    "type": "Count"
                }
            ],
            "ipAddressType": "IPv4",
            "matchConditions": [
                {
                    "ipCondition": {
                        "ipPrefixValues": [
                            "10.18.0.124/30",
                            "10.18.0.128/30",
                            "10.18.30.16/30",
                            "10.18.30.20/30"
                        ],
                        "prefixType": "Prefix",
                        "type": "SourceIP"
                    }
                },
                {
                    "ipCondition": {
                        "ipPrefixValues": [
                            "10.18.0.124/30",
                            "10.18.0.128/30",
                            "10.18.30.16/30",
                            "10.18.30.20/30"
                        ],
                        "prefixType": "Prefix",
                        "type": "DestinationIP"
                    }
                }
            ],
            "matchConfigurationName": "L3ISD_EXT_OPTA_EGRESS_ACL_IPV4_CE_PE",
            "sequenceNumber": 1110
        }
    ],
    "name": "example-Ipv4egressACL",
    "provisioningState": "Succeeded",
    "resourceGroup": "example-rg",
    "systemData": {
        "createdAt": "2023-09-11T10:20:20.2617941Z",
        "createdBy": "[email protected]",
        "createdByType": "User",
        "lastModifiedAt": "2023-09-11T10:20:20.2617941Z",
        "lastModifiedBy": "[email protected]",
        "lastModifiedByType": "User"
    },
    "type": "microsoft.managednetworkfabric/accesscontrollists"
}

Create an ingress ACL for the ISD external network

To create an ingress ACL for the specified ISD external network with the provided configuration, use the following command. Adjust the parameters as needed for your use case.

az networkfabric acl create
--resource-group "example-rg"
--location "eastus2euap"
--resource-name "example-Ipv4ingressACL"
--annotation "annotation"
--configuration-type "Inline"
--default-action "Deny"
--match-configurations "[{matchConfigurationName:'L3ISD_EXT_OPTA_INGRESS_ACL_IPV4_CE_PE',sequenceNumber:1110,ipAddressType:IPv4,matchConditions:[{ipCondition:{type:SourceIP,prefixType:Prefix,ipPrefixValues:['10.18.0.124/30','10.18.0.128/30','10.18.30.16/30','10.18.30.20/30']}},{ipCondition:{type:DestinationIP,prefixType:Prefix,ipPrefixValues:['10.18.0.124/30','10.18.0.128/30','10.18.30.16/30','10.18.30.20/30']}}],actions:[{type:Count}]}]"

Expected output

Upon successful execution, the command returns information about the created ACL in the following format. This output includes details about the configuration and state.

{
    "administrativeState": "Disabled",
    "annotation": "annotation",
    "configurationState": "Succeeded",
    "configurationType": "Inline",
    "defaultAction": "Deny",
    "id": "/subscriptions/xxxxx-xxxx-xxxx-xxxx-xxxxx/resourceGroups/example-rg/providers/Microsoft.ManagedNetworkFabric/accessControlLists/example-Ipv4ingressACL",
    "location": "eastus2euap",
    "matchConfigurations": [
        {
            "actions": [
                {
                    "type": "Count"
                }
            ],
            "ipAddressType": "IPv4",
            "matchConditions": [
                {
                    "ipCondition": {
                        "ipPrefixValues": [
                            "10.18.0.124/30",
                            "10.18.0.128/30",
                            "10.18.30.16/30",
                            "10.18.30.20/30"
                        ],
                        "prefixType": "Prefix",
                        "type": "SourceIP"
                    }
                },
                {
                    "ipCondition": {
                        "ipPrefixValues": [
                            "10.18.0.124/30",
                            "10.18.0.128/30",
                            "10.18.30.16/30",
                            "10.18.30.20/30"
                        ],
                        "prefixType": "Prefix",
                        "type": "DestinationIP"
                    }
                }
            ],
            "matchConfigurationName": "L3ISD_EXT_OPTA_INGRESS_ACL_IPV4_CE_PE",
            "sequenceNumber": 1110
        }
    ],
    "name": "example-Ipv4ingressACL",
    "provisioningState": "Succeeded",
    "resourceGroup": "example-rg",
    "systemData": {
        "createdAt": "2023-09-11T10:20:20.2617941Z",
        "createdBy": "[email protected]",
        "createdByType": "User",
        "lastModifiedAt": "2023-09-11T10:27:27.2317467Z",
        "lastModifiedBy": "[email protected]",
        "lastModifiedByType": "User"
    },
    "type": "microsoft.managednetworkfabric/accesscontrollists"
}