What is correlation in QRadar?

If you bulk load data into your QRadar deployment, you can use historical correlation to correlate the data against data that was collected in real-time. For example, to avoid performance degradation during normal business hours, you load events from multiple log sources every night at midnight.

Simply so, what can a custom common rule test?

For example, you can create a common rule to detect events and flows that have a specific source IP address. It is common for common rules to create offenses as a response. Test the parameters of an offense to trigger more responses.

Furthermore, what database does QRadar use? SQLite database

Also Know, what is a QRadar offense?

Offense investigations. IBM® QRadar® uses rules to monitor the events and flows in your network to detect security threats. When the events and flows meet the test criteria that is defined in the rules, an offense is created to show that a security attack or policy breach is suspected.

What is the main difference between building blocks and rules?

C . Building Blocks are built-in to the product; Rules are customized for each deployment. D . Building Blocks are Rules which are evaluated on both Flows and Events; Rules are evaluated on Offenses of Flows or Events.

Which categories of rules exist in QRadar?

What are the two categories of Rules in QRadar? Custom Rules: Perform tests on events, flows, and offenses to detect unusual network activity. Anomaly: Perform tests on the results of saved flow or event searches as a means to detect when unusual traffic patterns occur.

What is reference set in QRadar?

Reference sets overview. Use reference sets in IBM® QRadar® to store data in a simple list format. A reference set contains unique values that you can use in searches, filters, rule test conditions, and rule responses.

What is the purpose of rules in QRadar to test against?

Rules outline and evaluate incoming data against defined 'rule test' conditions in order to generate a response from the system. QRadar is capable of generating an unlimited number of rule combinations to test against event data, flow data, or offenses.

What is the purpose of the network hierarchy in QRadar?

IBM® QRadar® uses the network hierarchy objects and groups to view network activity and monitor groups or services in your network. QRadar supports any network hierarchy that can be defined by a range of IP addresses. You can base your network on many different variables, including geographical or business units.

Which engine is responsible for processing events or flows and compare them against defined rules to search for anomalies?

The custom rules engine (CRE) processes events and compares them against defined rules to search for anomalies. When a rule condition is met, the Event Processor generates an action that is defined in the rule response.

What is custom rule engine in QRadar?

The Custom Rules Engine (CRE) displays the rules and building blocks that are used by IBM® Security QRadar®. For more information about rules and offenses, see the IBM Security QRadar User Guide . Rules. A rule is a collection of tests that triggers an action when specific conditions are met.