SDN dynamic connector addresses in SD-WAN rules

SDN dynamic connector addresses can be used in SD-WAN rules. FortiGate supports both public (AWS, Azure, GCP, OCI, AliCloud) and private (Kubernetes, VMware ESXi and NSX, OpenStack, ACI, Nuage) SDN connectors.

The configuration procedure for all of the supported SDN connector types is the same. This example uses an Azure public SDN connector.

There are four steps to create and use an SDN connector address in an SD-WAN rule:

1. Configure the FortiGate IP address and network gateway so that it can reach the Internet.
2. Create an Azure SDN connector.
3. Create a firewall address to associate with the configured SDN connector.
4. Use the firewall address in an SD-WAN service rule.

To create an Azure SDN connector:

1. Go to Security Fabric > External Connectors.
2. Click Create New.
3. In the Public SDN section, click Microsoft Azure.
4. Enter the following:

   Name	azure1
   Status	Enabled
   Update Interval	Use Default
   Server region	Global
   Directory ID	942b80cd-1b14-42a1-8dcf-4b21dece61ba
   Application ID	14dbd5c5-307e-4ea4-8133-68738141feb1
   Client secret	xxxxxx
   Resource path	disabled

5. Click OK.

To create a firewall address to associate with the configured SDN connector:

1. Go to Policy & Objects > Addresses and select Address.
2. Click Create new.
3. Enter the following:

   Name	azure-address
   Type	Dynamic
   Sub Type	Fabric Connector Address
   SDN Connector	azure1
   Addresses to collect	Private
   Filter	SecurityGroup=edsouza-centos
   Interface	Any

   

4. Click OK.

To use the firewall address in an SD-WAN service rule:

1. Go to Network > SD-WAN, select the SD-WAN Rules tab, and click Create New.
2. Set the Name to Azure1.
3. For the Destination Address select azure-address.
4. Configure the remaining settings as needed. See SD-WAN rules for details.
5. Click OK.

Diagnostics

Use the following CLI commands to check the status of and troubleshoot the connector.

To see the status of the SDN connector:

# diagnose sys sdn status
SDN Connector          Type        Status          Updating        Last update
-----------------------------------------------------------------------------------------
azure1                 azure       connected       no              n/a

To debug the SDN connector to resolve the firewall address:

# diagnose debug application azd -1
    Debug messages will be on for 30 minutes.
        
    ...
    azd sdn connector azure1 start updating IP addresses
    azd checking firewall address object azure-address-1, vd 0
     IP address change, new list:
      10.18.0.4
      10.18.0.12
      ...
      ...

# diagnose sys sdwan service4
    
    Service(2): Address Mode(IPV4) flags=0x0
      TOS(0x0/0x0), Protocol(0: 1->65535), Mode(manual)
      Service role: standalone
      Member sub interface:
      Members:
        1: Seq_num(1), alive, selected
      Dst address:
            10.18.0.4 - 10.18.0.4
            10.18.0.12 - 10.18.0.12
             ... ...
             ... ...
             ... ...