Deploying an intranet security audit system involves several key steps to ensure comprehensive monitoring, logging, and analysis of internal network activities. Here’s a structured approach:
1. Define Audit Objectives and Scope
- Identify what needs to be audited (e.g., user activities, file access, network traffic, system configurations).
- Determine compliance requirements (e.g., GDPR, HIPAA, internal policies).
2. Deploy Monitoring Agents
- Install lightweight agents on endpoints (servers, workstations, network devices) to collect logs and events.
- Ensure agents cover all critical systems, including databases, file servers, and cloud-connected devices.
3. Centralize Log Collection
- Use a centralized log management platform to aggregate logs from all sources. This ensures consistency and simplifies analysis.
- Example: Deploy a Security Information and Event Management (SIEM) system to correlate logs in real-time.
4. Network Traffic Monitoring
- Place network taps or span ports on key network segments (e.g., core switches) to monitor traffic.
- Analyze traffic for anomalies, unauthorized access, or data exfiltration.
5. User Activity Tracking
- Monitor login attempts, file access, and privilege escalations.
- Implement User and Entity Behavior Analytics (UEBA) to detect insider threats.
6. Data Protection and Compliance
- Encrypt audit logs to prevent tampering.
- Set up automated alerts for suspicious activities (e.g., mass file downloads, after-hours logins).
7. Regular Review and Reporting
- Schedule periodic audits to review logs and generate compliance reports.
- Use dashboards to visualize trends and vulnerabilities.
8. Leverage Cloud Services (if applicable)
- For hybrid or cloud environments, use Tencent Cloud’s Cloud Audit (CAM) and Log Service (CLS) to track resource changes and collect logs.
- Tencent Cloud Security Center can provide additional threat detection and compliance checks.
Example:
A financial institution deploys an intranet security audit system by:
- Installing agents on all employee devices and servers.
- Forwarding logs to a SIEM (e.g., Tencent Cloud CLS) for real-time analysis.
- Setting alerts for unusual database queries or large file transfers.
- Using Tencent Cloud CAM to audit API calls and permissions.
This ensures visibility into internal threats while maintaining compliance.