FortiSIEM Architecture: The FortiSIEM architecture includes several components such as Supervisors, Workers, Collectors, and Agents, each playing a distinct role in the SIEM ecosystem.

Real-Time Event Correlation: Real-time event correlation is a critical function that involves analyzing and correlating incoming events to detect patterns indicative of security incidents or operational issues.

Role of Supervisor and Worker:

Supervisor: The Supervisor oversees the entire FortiSIEM system, coordinating the processing and analysis of events.

Worker: Workers are responsible for processing and correlating the events received from Collectors and Agents.

Collaboration for Correlation: Together, the Supervisor and Worker components perform real-time event correlation by distributing the load and ensuring efficient processing of events to identify incidents in real-time.

Reference: FortiSIEM 6.3 User Guide, Event Correlation and Processing section, details how the Supervisor and Worker components collaborate for real-time event correlation.

Anomaly Data Storage: Anomaly data, including running averages and standard deviation values for different parameters such as traffic and device resource usage, is stored in a specific database.

Profile DB: The Profile DB is used to store this type of anomaly data.

Function: It maintains statistical profiles and baselines for monitored parameters, which are used to detect anomalies and deviations from normal behavior.

Significance: Storing anomaly data in the Profile DB allows FortiSIEM to perform advanced analytics and alerting based on deviations from established baselines.

Reference: FortiSIEM 6.3 User Guide, Database Architecture section, which describes the purpose and contents of the Profile DB in storing anomaly and baseline data.

Grouping Events in FortiSIEM: Grouping events by specific attributes allows administrators to aggregate and analyze data more efficiently.

Grouping Criteria: In this case, the events are grouped by 'Event Type' and 'User' attributes.

Unique Combinations: To determine the number of results displayed, identify the unique combinations of the 'Event Type' and 'User' attributes in the provided data.

Failed Logon by Ryan (appears multiple times but is one unique combination)

Failed Logon by John

Failed Logon by Paul

Failed Logon by Wendy

Unique Groupings: There are four unique groupings based on the given data: 'Failed Logon' by 'Ryan', 'John', 'Paul', and 'Wendy'.

Reference: FortiSIEM 6.3 User Guide, Event Management and Reporting sections, which explain how events are grouped and reported based on selected attributes.

Incident Categories in FortiSIEM: Incidents in FortiSIEM are categorized to help administrators quickly identify and prioritize the type of issue.

Four Main Categories:

Performance: Incidents related to the performance of devices and applications, such as high CPU usage or memory utilization.

Availability: Incidents affecting the availability of services or devices, such as downtime or connectivity issues.

Security: Incidents related to security events, such as failed login attempts, malware detection, or unauthorized access.

Change: Incidents triggered by changes in the configuration or state of devices, such as new software installations or configuration modifications.

Importance of Categorization: These categories help in the efficient management and response to different types of incidents, allowing for better resource allocation and quicker resolution.

Reference: FortiSIEM 6.3 User Guide, Incident Management section, which details the different categories of incidents and their significance.

FortiSIEM Architecture: In FortiSIEM, collectors gather data from various sources and send this data to supervisors and workers within the FortiSIEM architecture.

Communication Requirements: For collectors to effectively send data to the FortiSIEM system, specific communication channels must be open.

Port Usage: The primary port used for secure communication between the collectors and the FortiSIEM infrastructure is HTTPS (port 443).

Network Configuration: When configuring collectors in geographically separated sites, the HTTPS port must be open for the collectors to communicate with both the supervisor and the worker upload settings addresses. This ensures that the collected data can be securely transmitted to the appropriate processing and analysis components.

Reference: FortiSIEM 6.3 Administration Guide, Network Ports section details the necessary ports for communication within the FortiSIEM architecture.