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Change Auditor 7.4 - SIEM Integration User Guide

Integrating Change Auditor and SIEM Tools Subscription Management
Adding the PowerShell module Viewing available commands and help Connecting to Change Auditor Managing subscriptions Working with event subscriptions in the client Managing a Splunk integration Managing an IBM QRadar integration Managing a Micro Focus Security ArcSight Logger and Enterprise Security Manager (ESM) integration Managing a Quest IT Security Search integration (Preview) Managing a Syslog integration Managing a Microsoft Sentinel integration
Webhook technical insights

Integrating Change Auditor and SIEM Tools

•
Webhooks in Change Auditor
•
Webhook terminology
•
Subscription configuration process

 

Webhooks in Change Auditor

Change Auditor administrators can configure Change Auditor to send events to a third party tool using webhook technology. This technology allows you to integrate Change Auditor with Splunk, IBM QRadar, Micro Focus Security ArcSight, Quest IT Security Search, or any other tool that accepts webhook notifications.

This guide is intended for customers who want to access and reuse the rich event data gathered by Change Auditor. It describes the configuration required to implement an integration with third-party tools.

Webhook terminology

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Webhook receiver: A service that has one or more webhook endpoints and is a third party tool that can receive Change Auditor events.
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Webhook endpoint: Specified with the NotificationUrl parameter, it is the web location where events are sent to inside the receiver.
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Webhook subscription: A configuration that contains information on the webhook receiver and how events should be sent. This includes a notification URL, notification interval, and the coordinator responsible for event forwarding.
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Notification: A message sent to the webhook receiver that contains a batch of events.

Subscription configuration process

* 
NOTE: Port 9000 is used for sending events to SIEM tools. For optimal security, it is recommended that this port is blocked to incoming traffic on the coordinator host firewall.

To begin receiving event data, you need to:

1
Deploy a SIEM tool that can receive and process events from Change Auditor.
Create a webhook endpoint and configure it in your SIEM tool. The specifics for this are dependent on the tool that you are using.
Test the webhook receiver to confirm it is working properly.
2
Create and configure a subscription within Change Auditor. The subscription contains information such as where to send the events, which events to include, and the coordinator responsible for event forwarding. It also contains the heartbeat notification which is a message sent to the webhook receiver that notifies it that the Change Auditor coordinator is responsive. The heartbeat notification contains the bookmark time. The bookmark is the time the last event was sent in the event notification.
For details on using more than one coordinator to avoid the suspension of event sending due to connection issues, see Subscription failover support.
For details on creating subscriptions see Managing a Splunk integration, Managing an IBM QRadar integration, Managing a Micro Focus Security ArcSight Logger and Enterprise Security Manager (ESM) integration, and Managing a Quest IT Security Search integration (Preview).
3
Once the subscription is created, the coordinator polls the database and continuously pushes new events to the specified notification URL in the subscription. Events are sent based on the time specified in the subscription.
4
Validate that events are being sent and processed by running the
Get-CAEventWebhookSubscriptions, Get-CASplunkEventSubscriptions, Get-CAQRadarEventSubscriptions, Get-CAArcSightEventSubscriptions, or Get-CAITSSEventSubscriptions commands. The information in these commands indicate if the events are being received.
Figure 1. Webhook integration process

 

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