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Microsoft Sentinel is a cloud-native Security Information and Event Management (SIEM) solution that enables enterprises to analyze security threats across their entire IT infrastructure. The platform integrates with a range of data sources to collect security event information and provides security teams with a centralized console to monitor and respond to incidents. In this post, we’ll explore how to design and configure Syslog and Common Event Format (CEF) event collections in Microsoft Sentinel.
Syslog is a protocol used by networking devices to send event messages to a central logging server. CEF is a standard for event log data that allows different security solutions to share event information. Microsoft Sentinel can collect and analyze events from Syslog and CEF data sources, which can help organizations to gain a better understanding of their security posture.
Before you start configuring Syslog and CEF event collections in Microsoft Sentinel, it’s important to understand the data that you want to collect and how you want to use it. This involves answering the following questions:
What data sources do you want to collect Syslog and CEF events from?
What are the security events that you want to collect and analyze?
What are the compliance requirements for collecting and storing the data?
Once you have the answers to these questions, you can start designing your Syslog and CEF event collections.
Configuring Syslog and CEF Event Collections in Microsoft Sentinel
To configure Syslog and CEF event collections in Microsoft Sentinel, follow these steps:
Create a workspace in Microsoft Azure.
Create a data connector for Syslog or CEF in the Azure portal.
Configure the data connector to collect events from the data sources that you want to monitor.
Verify that the data is being collected in the workspace.
Let’s look at each of these steps in more detail.
Step 1: Create a Workspace in Microsoft Azure
To create a workspace in Microsoft Azure:
Go to the Azure portal.
Click on Create a Resource.
Search for Log Analytics and select it.
Click on Create.
Enter a name for your workspace and select your subscription and resource group.
Click on Review + Create and then click on Create.
Step 2: Create a Data Connector for Syslog or CEF in the Azure Portal
To create a data connector for Syslog or CEF in the Azure portal:
Go to your workspace in the Azure portal.
Click on Data connectors.
Select the Syslog or CEF data connector.
Click on Open Connector page.
Configure the data connector to collect events from the data sources that you want to monitor.
Click on Save.
Step 3: Configure the Data Connector to Collect Events from the Data Sources
To configure the data connector to collect events from the data sources:
Select the data sources that you want to monitor.
Configure the data source settings, such as the hostname, port, and protocol.
Configure any additional settings, such as filters, event parsing, and field mappings.
Save the data source configuration.
Step 4: Verify that the Data is Being Collected in the Workspace
To verify that the data is being collected in the workspace:
Go to the workspace in the Azure portal.
Click on Logs.
Enter a query to search for the Syslog or CEF events that you want to monitor.
Verify that the events are being collected and that they are being displayed in the workspace.
Configuring Syslog and CEF event collections in Microsoft Sentinel can help organizations to improve their security posture by enabling them to collect and analyze security events
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