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How many vulnerability processors can you have in your deployment?
In QRadar SIEM V7.5, the number of vulnerability processors is limited to1.
These vulnerability processors are responsible for handling and processing vulnerability data within the system.
Having multiple vulnerability processors is not supported in this version of QRadar.
IBM QRadar SIEM V7.5 Administration documentation.
What is the most restrictive permissions a user needs in order to see all of the events from a particular log source in the Log Activity tab?
To see all of the events from a particular log source in the Log Activity tab, a user must have the appropriate permissions set in their security profile. The most restrictive permissions needed are:
Security Profile Inclusion: The log source must be included in the user's security profile. This means the user must have explicit permission to access events from this log source.
Permissions to Networks and Log Sources: The user's security profile must also include permissions to both Networks and Log Sources. This ensures the user has the necessary access to view events related to the specified log source within the network context.
These permissions are crucial to control and restrict access, ensuring users can only view data they are authorized to see while maintaining security and privacy within the system.
Reference IBM Security QRadar SIEM and IBM Security QRadar EDR integration.pdf
An administrator would like to optimize event and flow payload searches for log data that is stored for up to a month. What does an administrator need to do to achieve that requirement?
To optimize event and flow payload searches for log data stored for up to a month, an administrator should configure the retention period for payload indexes. Here's the process:
Retention Period Configuration: Set the retention period for payload indexes to match the desired data storage duration (e.g., one month).
Improved Search Efficiency: By configuring the retention period appropriately, QRadar ensures that the indexed data is efficiently searchable, improving performance during searches.
Index Management: Regularly manage and clean up indexes to maintain optimal system performance and storage utilization.
Reference The IBM QRadar SIEM administration guides provide instructions on configuring retention periods for various types of indexes, including payload indexes, to optimize search performance.
When will events or flows stop contributing to an offense?
In IBM QRadar SIEM V7.5, events or flows stop contributing to an offense when the offense becomes dormant. Here's how it works:
Dormant Offense: An offense becomes dormant when there is no new activity contributing to it for a specified period. This indicates that the threat or incident has not had any further related events or flows.
Contribution Stoppage: Once an offense is marked as dormant, no additional events or flows are added to it, which helps in managing the offense lifecycle and resources within QRadar.
This behavior helps in distinguishing between active and inactive threats, allowing security analysts to focus on ongoing incidents.
Reference The QRadar SIEM administration and user guides provide detailed explanations of offense management, including the conditions under which offenses become dormant and how this affects event and flow contributions.
Which authentication type in QRadar encrypts the username and password and forwards the username and password to the external server for authentication?
TACACS (Terminal Access Controller Access-Control System) authentication is a protocol used in IBM QRadar SIEM V7.5 for authenticating users by forwarding their credentials to an external server. Here's how it works:
Encryption: TACACS encrypts the entire payload of the authentication packet, including the username and password, ensuring secure transmission.
Forwarding Credentials: After encryption, the credentials are forwarded to an external TACACS server, which performs the actual authentication.
Authentication Process: The external server checks the credentials against its database and sends a response back to QRadar indicating whether the authentication is successful or not.
Reference IBM QRadar SIEM documentation explains TACACS authentication in detail, highlighting its secure encryption and external server verification process.
