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Robert Rojek

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Add new DNS servers to QRadar An open offense can be inactive in the Backend How to change a forgotten password in QRadar List and export all enabled Log Sources using psql query in QRadar Manually stop QRadar services
General

Add new DNS servers to QRadar

Feb 27, 2021 Robert Rojek

There is a common problem with how to add new DNS servers to QRadar if you need to change them. Normally, you should run the qchange_netsetup script, which is looking…

Offenses

An open offense can be inactive in the Backend

Feb 21, 2021 Robert Rojek

An open offense can be inactive in the Backend if there are no new events that arrived for at least 30 minutes. Despite this fact, the end-user (after opening the…

Admin Architecture

How to change a forgotten password in QRadar

Jan 4, 2021 Robert Rojek

QRadar has multiple ways to authenticate users. Apart from the default System Authentication based on data kept in the Postgres database, you can configure external Authentication using RADIUS, TACACS, LDAP…

Tutorial

List and export all enabled Log Sources using psql query in QRadar

Jan 3, 2021 Robert Rojek

In order to export a list of all enabled log sources, SIEM administrators can run one of the following commands basd on psql query in QRadar. The commands are available…

Architecture

Manually stop QRadar services

Jan 2, 2021 Robert Rojek

Most of QRadar administrators are familiar with the command issued in the backend, which restarts services (systemctl restart hostcontext). You should know what kind of services are available and responsible…

Admin

Deploying changes locally

Jun 14, 2020 Robert Rojek

Many QRadar users and admins hit time out or error issue when they are deploying changes in QRadar to the Managed Hosts. Not all of them know how to troubleshoot…

App

User Behavior Analytics 3.6 (UBA) with Multi-Tenancy support

Apr 16, 2020 Robert Rojek

It has been announced, that soon we can expect a new version of UBA extension to QRadar functionality. The new version with number 3.6 will bring a number of new…

Architecture

Deployment Model in QRadar

Jun 7, 2019 Robert Rojek

QRadar can work in the Deployment Model which is master and slave environment. The single master is the console, which manages the configuration updates for all the managed hosts (slaves)…

Log Activity Video

DSM Editor (part two)

May 19, 2019 Robert Rojek

This is the second part of the article about DSM Editor. Please find the link here to the first part of this article. As mentioned there, DSM Editor can create…

General

DSM Editor (part one)

May 19, 2019 Robert Rojek

DSM Editor is multi-task editor, which let you parse any event received by QRadar box. QRadar supports more than 1000 Log Sources out of the box. It is possible because…

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Robert Rojek
RobertRojek3Robert Rojek@RobertRojek3·
19 Sep

You can simply harden you QRadar Security installation using the STIG script:
https://www.ibm.com/docs/en/SS42VS_7.4/com.ibm.qradar.doc/b_stig_guide.pdf

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RobertRojek3Robert Rojek@RobertRojek3·
10 Sep

Performance Degradation in the ecs-ep module? /opt/qradar/support/threadTop.sh -p 7799 -e "CRE Processor" and if you can see in the column timings over the 1500ms then most likely it happens. Try to find any expensive rules and disable them or tune down.

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You missed

General

Add new DNS servers to QRadar

Feb 27, 2021 Robert Rojek
Offenses

An open offense can be inactive in the Backend

Feb 21, 2021 Robert Rojek
Admin Architecture

How to change a forgotten password in QRadar

Jan 4, 2021 Robert Rojek
Tutorial

List and export all enabled Log Sources using psql query in QRadar

Jan 3, 2021 Robert Rojek

Disclaimer: This is my own personal blog and any information found here should not be treated as official advice or IBM documentation.

Robert Rojek

SIEM blog

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