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Sumo Logic

Duo Source

The Duo Source provides a secure endpoint to receive authentication logs from the Duo Authentication Logs API. It securely stores the required authentication, scheduling, and state tracking information.

States

A Duo Source tracks errors, reports its health, and start-up progress. You’re informed, in real-time, if the Source is having trouble connecting, if there's an error requiring user action, or if it is healthy and collecting by utilizing Health Events.

A Duo Source goes through the following states when created:

  1. Pending: Once the Source is submitted it is validated, stored, and placed in a Pending state.
  2. Started: A collection task is created on the Hosted Collector.
  3. Initialized: The task configuration is complete in Sumo Logic.
  4. Authenticated: The Source successfully authenticated with Duo.
  5. Collecting: The Source is actively collecting data from Duo.

If the Source has any issues during any one of these states it is placed in an Error state.

When you delete the Source it is placed in a Stopping state, when it has successfully stopped it is deleted from your Hosted Collector.

On the Collection page, the Health and Status for Sources is displayed. Use Health Events to investigate issues with collection.

Duo health error.png

Hover your mouse over the status icon to view a tooltip with details on the detected issue.

health error generic.png

Create a Duo Source

When you create a Duo Source, you add it to a Hosted Collector. Before creating the Source, identify the Hosted Collector you want to use or create a new Hosted Collector. For instructions, see Configure a Hosted Collector.

To configure a Duo Source:

  1. In the Sumo Logic web app, select Manage Data > Collection > Collection
  1. On the Collectors page, click Add Source next to a Hosted Collector.
  1. Select Duo.
    Duo source icon.png
  1. Enter a Name to display for the Source in the Sumo web application. The description is optional.
    duo create pane.png
  1. (Optional) For Source Category, enter any string to tag the output collected from the Source. Category metadata is stored in a searchable field called _sourceCategory.
  2. Forward to SIEM. Check the checkbox to forward your data to Cloud SIEM Enterprise. When configured with the Forward to SIEM option the following metadata fields are set:
Field Name Value
_siemVendor Duo
_siemProduct MFA
_siemFormat JSON
_siemEventID <eventType>

Where <eventType> is the value of the field from the JSON event, such as authentication or enrollment
  1. Fields. Click the +Add link to add custom log metadata Fields.
    • Define the fields you want to associate, each field needs a name (key) and value. 
      • green check circle.png A green circle with a check mark is shown when the field exists and is enabled in the Fields table schema.
      • orange exclamation point.png An orange triangle with an exclamation point is shown when the field doesn't exist, or is disabled, in the Fields table schema. In this case, an option to automatically add or enable the nonexistent fields to the Fields table schema is provided. If a field is sent to Sumo that does not exist in the Fields schema or is disabled it is ignored, known as dropped.
  2. Duo Domain. Provide your specific Duo domain, such as mydomain.duo.com.

  3. Integration Key. Provide the Duo Integration Key you want to use to authenticate collection requests.

  4. Secret Key. Provide the Duo Secret Key you want to use to authenticate collection requests. 

  5. (Optional) The Polling Interval is set for 300 seconds by default, you can adjust it based on your needs. This sets how often the Source checks for new data.

  6. When you are finished configuring the Source click Submit.

Error types

When Sumo Logic detects an issue it is tracked by Health Events. The following table shows the three possible error types, the reason the error would occur, if the Source attempts to retry, and the name of the event log in the Health Event Index.

Type Reason Retries Retry Behavior Health Event Name
ThirdPartyConfig Normally due to an invalid configuration. You'll need to review your Source configuration and make an update. No retries are attempted until the Source is updated. Not applicable ThirdPartyConfigError
ThirdPartyGeneric Normally due to an error communicating with the third party service APIs. Yes The Source will retry for up to 90 minutes, after which retries will be attempted every 60 minutes. ThirdPartyGenericError
FirstPartyGeneric Normally due to an error communicating with the internal Sumo Logic APIs. Yes The Source will retry for up to 90 minutes, after which retries will be attempted every 60 minutes. FirstPartyGenericError

JSON configuration

Sources can be configured using UTF-8 encoded JSON files with the Collector Management API. See how to use JSON to configure Sources for details. 

Parameter Type Required? Description Access
config JSON Object Yes Contains the configuration parameters for the Source.  
schemaRef JSON Object Yes Use {"type":"Duo"} for a Duo Source. not modifiable
sourceType String Yes Use Universal for a Duo Source. not modifiable

The following table shows the config parameters for a Duo Source.

Parameter Type Required Default Description Access
name String Yes   Type a desired name of the Source. The name must be unique per Collector. This value is assigned to the metadata field _source. modifiable
description String No null Type a description of the Source. modifiable
category String No null Type a category of the source. This value is assigned to the metadata field _sourceCategory. See best practices for details. modifiable
fields JSON
Object
No   JSON map of key-value fields (metadata) to apply to the Collector or Source.

Use the boolean field _siemForward to enable forwarding to SIEM.
modifiable
domain String Yes   Provide your specific Duo domain, such as mydomain.duo.com. modifiable
integration_key String Yes   Provide the Duo Integration Key you want to use to authenticate collection requests. modifiable
secret_key String Yes   Provide the Duo Secret Key you want to use to authenticate collection requests. modifiable
pollingInterval Integer No 300 This sets how often the Source checks for new data. modifiable

Duo Source JSON example:

{
  "api.version":"v1",
  "source":{
    "schemaRef":{
      "type":"Duo"
    },
    "config":{
      "name":"Duo",
      "description":"East field",
      "domain":"mydomain.duo.com",
      "integration_key":"********",
      "secret_key":"********",
      "fields":{
        "_siemForward":false
      },
      "category":"eastTeamF",
      "pollingInterval":300
    },
    "sourceType":"Universal"
  }
}