Decoder: Create a Custom Feed

Document created by RSA Information Design and Development on Sep 13, 2017Last modified by RSA Information Design and Development on Oct 11, 2017
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You can create a custom feed using the Custom Feed wizard. To complete this procedure, you need a feed data file in .csvor .xml format. If you also have an associated feed definition file in .xml format, which describes the structure of the feed data file, you can use the feed definition file to create a feed. The Custom Feed wizard can create the feed based on a feed data file, or based on a feed data file and corresponding feed definition file.

Note: From 10.6.1 or later, NetWitness Suite supports Structured Threat Information Expression (STIX). For more information about STIX and creating a STIX custom feed.

The feed data file and optionally the feed definition file (.xml) must be available on the local file system for an on-demand custom feed. For a recurring custom feed, the files must be available at a URL that is accessible to the NetWitness Suite server.

To create a custom feed:

 

  1. Go to CONFIGURE > Custom Feeds, and in the Feeds panel click The add icon.
    The Custom Feeds view is displayed.

    An example of the Feeds view

  2. Click Custom Feed and Next.
    The Configure a Custom Feed wizard is displayed, with the Define Feed form open.

    Configure a Custom Feed wizard when first opened
  3. Select the Feed Type: CSV or STIX.
  4. To define a feed based on a .csv formatted feed data file, select Default in the Feed Type field.

  5. To define an on-demand feed task that executes once, select Adhoc in the Feed Task Type field and do one of the following:
    1. (Conditional) To define a feed based on a .csv formatted feed data file, type the feed Name, select a .csv content File from the local file system, and click Next.
    2. (Conditional) To define a feed based on an XML feed file, select Advanced Options.

      The Advanced Options are displayed:

      Configure Cust Feed wizard in the Define Feed tab

    3. Select an XML feed file from the local file system, choose the Separator (default is comma), and specify the Comment characters used in the feed data file (default is #), and click Next.
    4. The Select Services form is displayed. This is an example of the form for a feed based on a feed data file with no feed definition file. If you are defining a feed based on a feed definition file, the Define Columns tab is not needed.

      Configure a Custom Feed wizard in the Select Services tab

  6. To define a recurring feed task that executes repeatedly at specified intervals, during a specified date range.

    1. Select Recurring in the Feed Task Type field.

      The Define Feed form includes the fields for a recurring feed.

      This is an example of the Define Feed section.

    2. In the URL field, enter the URL where the feed data file is located, for example, http://<hostname>/<feeddatafile>.csv, and click Verify.

      NetWitness Suite verifies the location where the file is stored in order to enable checking for the latest file automatically before each recurrence.

    3. (Optional) If the URL has restricted access and requires authentication using your username and password, select Authenticated.

      NetWitness Suite provides your user name and password for authentication to the URL.

    4. If you want the NetWitness server to access the Feed URL through a proxy, select Use Proxy. For more information on configuring a proxy, see "Configure Proxy for NetWitness Suite" in the System Configuration Guide. By default, the Use Proxy checkbox is not selected.
    5. To define the interval for recurrence, do one of the following:

      • Specify the number of minutes, hours, or days between recurrences of the feed.
      • Specify recurrence every week, and select the days of the week.
    6. To define the date range for the execution of the feed to recur, specify the Start Date and time and the End Date and time.

      This is an example of the Define Feed section with the Name field filled.

  7. (Conditional) If you want to define a feed based on an XML feed file:

    • Type the feed Name, select Advanced Options.

      The Advanced Options fields are displayed.

    • Select an XML feed file from the local file system, choose the Separator (default is comma), specify the Comment characters used in the feed data file (default is #) and click Next.

      The Select Services form is displayed.

      This is the Select Services section.

  8. To identify services on which to deploy the feed, do one of the following:

    1. Select one or more Decoders and Log Decoders, and click Next.
    2. Click the Groups tab and select a group. Click Next.

      The Define Columns form is displayed.

  9. To map columns in the Define Columns form:

    1. Define the Index type: IP, IP Range, or Non IP, and select the index column.
    2. (Conditional) If the index type is IP or IP Range and the IP address is in CIDR notation, select CIDR.
    3. (Conditional) If the index type is Non IP, additional settings are displayed. Select the service type and Callback Keys, and optionally select the Truncate Domain option.

      This is the Define Columns section with the Callback Key(s) drop-down open.

    4. Select the language key to apply to the data in each column from the drop-down list. The meta displayed in the drop-down list is based on the meta available for the service define values. You can also add other meta based on advanced expertise.

      This is an example of the Define Columns section.

    5. Click Next.

      The Review form is displayed.

      This is an example of the Review form.

  10. Anytime before you click Finish, you can:

    • Click Cancel to close the wizard without saving your feed definition.
    • Click Reset to clear the data in the wizard.
    • Click Next to display the next form (if not viewing the last form).
    • Click Prev to display the previous form (if not viewing the first form)
  11. Review the feed information, and if correct, click Finish.
  12. Upon successful creation of the feed definition file, the Create Feed wizard closes, and the feed and corresponding token file are listed in the Feed grid and progress bar tracks completion. You can expand or collapse the entry to see how many services are included, and which services were successful.
    ..



 
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