Transit FireNet Workflow for Egress

By default, FireNet inspects traffic between North South (on-prem and VPC/VNet) and East West (VPC/VNet to VPC/VNet). You can use this workflow to ensure that a Transit gateway sends trafic to the Internet and does not perform any traffic inspection.

Transit FireNet Workflow Prerequisites

If desired, you can create VPCs/VNets ahead of time that have the Transit + FireNet VPC Function option selected, ensuring that the necessary subnets and interfaces are already created in those VPC/VNets in preparation for using the Transit FireNet feature. If when adding FireNet to a Transit gateway you decide to use a VPC/VNet that does not have the Transit + FireNet function selected, you must subsequently create the necessary subnets and interfaces in the relevant cloud service provider.

When FireNet is added to a Transit gateway, a firewall can be inserted into the Aviatrix Transit VPC/VNet. East-west and egress traffic is inspected by these firewalls, unless traffic inspection is explicitly disabled (by using an Egress FireNet or disabling the Traffic Inspection option). <some of this might be repeated from the Overview topic>

Adding Egress FireNet

Ensure that you have completed any prerequisites before beginning.

See Minimum Gateway Instance Sizes for FireNet deployment for information on the interfaces/NICs created when you add FireNet to a Transit Gateway.

  1. On the Security > FireNet > FireNet Gateways tab, click the down arrow next to +Add FireNet and click Add Egress Transit FireNet.

  2. In the Add Egress Transit FireNet to Transit Gateway dialog, select if you want to add FireNet to an existing Transit gateway or on a new Transit gateway.

    If you are adding FireNet to an existing Transit gateway that has the BGP over LAN slider On, that Transit gateway must also have DNAT/SNAT configured.

    Only Transit gateways that have the Transit Egress Capability toggle enabled (selected when you create a Transit gateway from Cloud Fabric > Gateways > Transit Gateways) are displayed in the Existing Transit Gateway List.

  1. If creating a new Transit gateway, enter a name in the Name field.

  2. Configure the Egress Transit FireNet using the information in one of these tables:

  3. Click Add.

    You can check the FireNet creation progress on the Monitor > Notifications > Tasks tab.

Attaching a Spoke to a Transit FireNet

After adding a Transit FireNet, you can attach Spoke gateways. The GCP Spoke gateways can have Global VPC enabled.

Managing Gateway Attachment

  1. Navigate to Cloud Fabric > Gateways > Spoke Gateways.

  2. Click the Manage Gateway Attachments icon 25 next to a Spoke Gateway.

  3. In the Manage Gateway Attachments dialog, click Attachment on the Transit Gateway tab to select the Transit Gateway to which the Spoke Gateway will be attached.

  4. Click Save.

To detach a Spoke from a Transit FireNet, you can open the Manage Gateway Attachment dialog, click the Delete icon 25 next to the Transit gateway in the list, and click Save.

Editing Transit Gateway Attachment for a Spoke Gateway

  1. Navigate to Cloud Fabric > Gateways > Spoke Gateways.

  2. Click the Edit icon edit icon next to the Spoke gateway.

  3. Select the FireNet-enabled Transit gateway from the Attach Transit Gateway drop-down, or the Egress Transit FireNet from the Attach to Egress Transit FireNet drop-down.

  4. Click Save.

You can detach a Spoke from a Transit FireNet by editing the Spoke gateway and removing the Transit gateway from the Attach Transit Gateway drop-down.

Deploying a Firewall

You can also associate an existing firewall.

Supported firewalls are Check Point CloudGuard, Fortinet FortiGate, and Palo Alto VM-Series.

Supported firewall managers are Panorama (Palo Alto VM-Series).

After firewalls are launched, you can configure them to check traffic flow.

AWS only: If you want to launch a firewall, you must first subscribe to a firewall instance in the AWS Marketplace.

See here for Bootstrap Configuration information.

You can have more than one firewall in a FireNet Transit gateway.

  1. On the Security > FireNet > Firewall tab, click +Firewall to open the Deploy Firewall dialog and add a new firewall instance.

    From here you can also import a firewall you previously created in your cloud portal.

  1. If deploying a new firewall, fill out the following fields:

    Field

    Description

    Transit FireNet Gateway Instance

    Select the Transit FireNet gateway instance to associate with this firewall.

    Attach Firewall to FireNet after Launching

    Yes/No

    Select Yes to enable the firewall (the firewall instance is inserted into the data path). If you select No, the firewall is not attached at this time. You can attach it later.

    Availability Domain (OCI only)

    Data center within a region

    Fault Domain (OCI only)

    Fault domain is within Availability Domain; fault domains let you distribute your instances so that they are not on the same physical hardware within a single Availability Domain

    Zone (GCP)

    Availability Zone

    Name

    Your name for the firewall instance

    Firewall Image

    The image for your desired firewall: Palo Alto, Check Point, or Fortinet FortiGate.

    Firewall Image Version

    Select a currently supported firewall image version.

    Firewall Instance Size

    Select an instance size for the firewall. The available sizes vary based on the selected FireNet instance and type of firewall.

    Egress Interface Subnet

    Select the subnet to use for egress.

    Key Pair Name (Check Point CloudGuard, Fortinet FortiGate) (optional)

    Only displays if you enable Boostrap Configuration.

    Add a Key-Value pair for firewall authentication.

    Management Interface Subnet (Palo Alto/AWS only)

    Subnet of the Palo Alto firewall management interface.

    Authentication (Azure)

    Password or SSH Public Key

    If you select Password, enter a password of your choice.

    If you select SSH Public Key, enter the SSH Public Key of the firewall.

    Username (Azure)

    Username of your choice ('admin' is not allowed).

    Bootstrap Configuration (optional)

    Enable/Disable

If you have enabled the Bootstrap Configuration to deploy your firewall, configure those fields before clicking Save.

FireNet Vendor Integration

The Vendor Integration function allows you to log into a firewall or firewall manager and change the route table on the firewall to program the routing for Transit FireNet, or to change routing if a gateway in Transit FireNet fails.

You can also use Vendor Integration to configure the RFC 1918 and non-RFC 1918 routes between the Aviatrix Gateway and the vendor’s firewall instance.

You can only configure information on this dialog if a firewall is already attached to the Transit FireNet.

Configuring Vendor Integration

  1. From the FireNet Gateways tab, click the vertical ellipsis icon 25 in a FireNet Gateway row and select Vendor Integration.

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  1. In the Vendor Integration dialog, select Through Firewall or Through Firewall Manager.

    You should only select the latter if the Vendor is a Palo Alto firewall (managed by Panorama).

  1. Configure the following:

    Field Description

    Firewall

    Name of the attached firewall (this is pre-populated with the name of the attached firewall).

    Firewall Manager Vendor (Through Firewall Manager option only)

    Palo Alto Networks Panorama

    Management IP Address

    Management IP address of the firewall.

    Vendor (Through Firewall option only)

    Firewall vendor (Palo Alto Networks VM-Series, Fortinet FortiGate, Check Point CloudGuard).

    Authentication (Check Point CloudGuard)

    Password or Private Key

    Username (Check Point, Palo Alto)

    Username for logging on to the firewall.

    Password (Check Point, Palo Alto)

    Password for logging on to the firewall.

    Private Key (Check Point)

    If you selected Private Key authentication for your Check Point firewall, you must upload the private key here.

    FireNet Instance

    Template Name (Firewall Manager Vendor only)

    Name of the template.

    Template Stack Name (Firewall Manager Vendor only)

    Name of the Template Stack.

    Route Table

    Optional

    API Token (Fortinet FortiGate only)

    API token generated from the Fortinet FortiGate instance

  1. Click Save.

Revoking Vendor Integration

You cannot revoke vendor integration for FireNet gateways that have the Generic vendor selected.

To revoke Vendor Integration:

  1. Select Vendor Integration as per step 1 above, and then click Revoke Integration on the dialog.

  2. You are prompted to remove If you are sure you want to revoke the vendor integration for this firewall. If you want to do so, click Revoke.

Syncing Routes to Firewall

The Vendor Integration tab only displays if you have configured a Firewall Manager (Panorama) and attached it to this Transit FireNet.

You can click Sync Routes to Firewall on the FireNet Gateway Vendor Integration tab (you must configure vendor integration first) or the details panel for the firewall, to ensure that the FireNet routes are synced to the selected firewall.

You can also sync routes to the firewall from the Security > FireNet > Firewall details tab.

Since vendor integration requires that the firewall be pinged periodically, you should configure the 'ping' ability in the respective firewall UIs.

You can also sync routes to the firewall from the Security > FireNet > Firewall tab (click a firewall to see its details, and then click Sync Routes to Firewall).