Configuring Azure Sentinel with Log Analytics involves several steps to ensure that your security logs and telemetry data are collected, analyzed, and monitored effectively. Here's a step-by-step guide to setting up Azure Sentinel with Log Analytics:
Step 1: Create an Azure Sentinel Workspace
- Sign in to Azure Portal: Log in to the Azure portal using your Azure account credentials.
- Create a New Azure Sentinel Workspace: Search for "Azure Sentinel" in the Azure portal and select the service. Click on "Add" to create a new Azure Sentinel workspace.
- Provide Workspace Details: Choose your Azure subscription, resource group, and region for the workspace. Provide a name for your workspace.
- Review and Create: Review the configuration settings, then click "Review + create" to create the Azure Sentinel workspace.
Step 2: Enable Azure Monitor Logs (Log Analytics)
- Navigate to Azure Monitor Logs: In the Azure portal, navigate to "Azure Monitor" or "Log Analytics" under the Monitoring section.
- Select Log Analytics Workspaces: Choose the Log Analytics workspace where you want to collect and store security logs and telemetry data.
- Enable Solutions and Data Sources: Within the Log Analytics workspace, enable solutions and data sources relevant to your security requirements, such as Azure Security Center, Azure AD logs, Office 365 logs, and others.
- Configure Data Retention: Set the data retention period for the logs and telemetry data collected in the Log Analytics workspace.
Step 3: Connect Data Sources to Azure Sentinel
- Navigate to Azure Sentinel: In the Azure portal, navigate back to your Azure Sentinel workspace.
- Configure Data Connectors: In the Azure Sentinel workspace, navigate to "Data connectors" under "Configuration".
- Select Data Sources: Choose the data sources you want to connect to Azure Sentinel, such as Azure Security Center, Azure Activity logs, Office 365, Azure AD, and more.
- Configure Data Connector Settings: For each data connector, configure the settings such as log retention period, data sampling, and authentication details.
- Enable Data Connectors: Once configured, enable the data connectors to start ingesting security logs and telemetry data into Azure Sentinel.
Step 4: Create Analytics Rules and Alerts
- Navigate to Analytics: In the Azure Sentinel workspace, navigate to "Analytics" under "Configuration".
- Create New Rule: Click on "Create" to create a new analytics rule for threat detection and alerting.
- Define Rule Logic: Define the rule logic based on security use cases, such as detecting brute force attacks, malware infections, or suspicious user activities.
- Set Alert Thresholds: Configure alert thresholds, severity levels, and response actions for each rule.
- Review and Save: Review the rule settings, then save and enable the rule to start monitoring for security threats.
Step 5: Monitor and Investigate Security Incidents
- Navigate to Incidents: In the Azure Sentinel workspace, navigate to "Incidents" to monitor active security incidents and alerts.
- Investigate Incidents: Review incident details, affected resources, and related alerts to investigate security incidents and potential threats.
- Take Response Actions: Based on the severity and impact of the incident, take appropriate response actions such as quarantining affected resources, blocking malicious IPs, or escalating the incident for further investigation.
- Resolve and Close Incidents: Once the incident is resolved, document the findings, remediation steps, and lessons learned. Close the incident to track the resolution status.
By following these steps, you can effectively configure Azure Sentinel with Log Analytics to collect, analyze, and monitor security logs and telemetry data from your Azure environment. Continuously monitor and refine your security operations to stay ahead of evolving threats and protect your organization's assets and data.
