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    4. Prisma Cloud Administrator’s Guide (Compute)
    5. WAAS
    6. Deploy WAAS
    7. Deploy WAAS Out-Of-Band for Hosts

    Deploy WAAS Out-Of-Band for Hosts

    Create a new rule to deploy WAAS Out-Of-Band for Hosts for Linux Operating System. Out-Of-Band for hosts is not supported for Windows.

    Prerequisites

    • You have installed a Host Defender in your workload environment.
    • The minimum version of Console and Defender is 22.12.
    • A TLS certificate in PEM format.

    Create a WAAS rule for Out-Of-Band network traffic

    To deploy WAAS for Out-Of-Band network traffic, create a new rule, define application endpoints, and select protections.
    1. Open Console, and go to
      Defend > WAAS > {Container|Host} > Out-of-Band
      .
    2. Click
      Add rule
      .
      1. Enter a
        Rule Name
      2. Enter
        Notes
         (Optional) for describing the rule.
    3. Choose the rule
      Scope
       by specifying the resource collection(s) to which it applies.
      Collections define a combination of hosts to which WAAS should attach itself to protect the web application:
      Applying a rule to all hosts/images using a wild card (*) is invalid and a waste of resources. WAAS only needs to be applied to hosts that run applications that transmit and receive HTTP/HTTPS traffic.
    4. (Optional) Enable
      API endpoint discovery
      When enabled, the Defender inspects the API traffic to and from the protected API. Defender reports a list of the endpoints and their resource path in
      Compute > Monitor > WAAS > API discovery
      .
    5. (Optional) Enable
      Automatically detect ports
       for an endpoint to deploy the WAAS’s protection on ports identified in the unprotected web apps report in
      Monitor > WAAS > Unprotected web apps
       for each of the workloads in the rule scope.
      As an additional measure, you can specify additional ports by specifying them in the protected HTTP endpoints within each app to also include the ports that may not have been detected automatically.
      By enabling both
      Automatically detect ports
       and
      API endpoint discovery
      , you can monitor your API endpoints and ports without having to add an application and without configuring any policies.
    6. Save
       the rule.

    Add an App (policy) to the rule

    1. Select a WAAS rule to add an App in.
    2. Click
      Add app
      .
    3. In the
      App Definition
       tab, enter an
      App ID
      .
      The combination of
      Rule name
       and
      App ID
       must be unique across In-Line and Out-Of-Band WAAS policies for Containers, Hosts, and App-Embedded.
      If you have a Swagger or OpenAPI file, click
      Import
      , and select the file to load.
      If you do not have a Swagger or OpenAPI file, manually define each endpoint by specifying the host, port, and path.
      1. In
        Endpoint Setup
        , click
        Add Endpoint
        .
      2. Specify endpoint in your web application that should be protected. Each defined application can have multiple protected endpoints.
      3. Enter
        HTTP host
         (optional, wildcards supported).
        HTTP hostnames are specified in the form of [hostname]:[external port].
        The external port is defined as the TCP port on the host, listening for inbound HTTP traffic. If the value of the external port is "80" for non-TLS endpoints or "443" for TLS endpoints it can be omitted. Examples: "*.example.site", "docs.example.site", "www.example.site:8080", etc.
      4. Enter
        App ports
         as the internal port your app listens on (optional, if you selected
        Automatically detect ports
         while creating the rule).
        When
        Automatically detect ports
         is selected, any ports specified in a protected endpoint definition will be appended to the list of protected ports.
        Specify the TCP port listening for inbound HTTP traffic.
        If your application uses
        TLS
         or
        gRPC
        , you must specify a port number.
      5. Enter
        Base path
         (optional, wildcards supported):
        Base path for WAAS to match when applying protections.
        Examples: "/admin", "/" (root path only), "/*", /v2/api", etc.
      6. If your application uses TLS, set
        TLS
         to
        On
        .
        You can select the TLS protocol (1.0, 1.1, 1.2, and 1.3 for WAAS In-Line, and 1.0, 1.1, and 1.2 for WAAS Out-Of-Band) to protect the API endpoint and enter the TLS certificate in PEM format.
        Limitations
        1. TLS connections using extended_master_secret(23) in the negotiation are not supported as part of this feature.
        2. DHKE is not supported due to a lack of information required to generate the encryption key.
        3. Out-of-Band does not support HTTP/2 protocol.
        4. TLS inspection for Out-of-Band WAAS is not supported on earlier versions of Console and Defender.
          • If your application uses HTTP/2, set
            HTTP/2
             to
            On
            .
            WAAS must be able to decrypt and inspect HTTPS traffic to function properly.
          • If your application uses gRPC, set
            gRPC
             to
            On
            .
      7. Select
        Create response header
        .
      8. To facilitate inspection, after creating all endpoints, click
        View TLS settings
         in the endpoint setup menu.
        WAAS TLS settings:
      9. If you application requires API protection, for each path define the allowed methods and the parameters.
    4. Continue to
      App Firewall
       settings, select the protections to enable and assign them with WAAS Actions.
    5. Configure the DoS protection thresholds.
    6. Continue to
      Access Control
       tab and select access controls to enable.
    7. Select the bot protections you want to enable.
    8. Select the required Custom rules.
    9. Proceed to Advanced settings for more WAAS controls.
    10. Select
      Save
      .
    11. The
      Rule Overview
       page shows all the WAAS rules created.
      Select a rule to display the
      Rule Resources
      , and for each application a list of protected endpoints and the protections enabled for each endpoint are displayed.
    12. Test protected endpoint using the following sanity tests.
    13. Go to
      Monitor > Events
      , click on
      WAAS for containers/hosts/App-Embedded
      , and observe the events generated.
      For more information, see the WAAS analytics help page

    WAAS Actions for Out-Of-Band traffic

    The following actions are applicable for the HTTP requests or responses related to the
    Out-Of-Band traffic
    :
    • Alert
       - An audit is generated for visibility.
    • Disable
       - The WAAS action is disabled.

    Troubleshooting

    No inspection generated by WAAS Out-Of-Band for TLS protocol
    Ensure that the requests use a supported TLS protocol and cipher suite, and respect the limitations listed in the Limitations section.