Crowdsec: send logs to Elasticsearch (ELK)

In this tutorial, I will explain how to send decision logs to Elasticsearch (ELK) so that you can create a dashboard to use the logs. What you need to achieve what described in the tutorial: Crowdsec version 1.2.x or higher an Elasticsearch server or an ELK stack Since version 1.2 of Crowdsec, a notification system …

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Crowdsec: protecting Windows servers

In a previous tutorial, I explained how to protect your Linux servers with Crowdsec in order to block “malicious” traffic. For almost 2 months now, the Crowdsec version has been available for Windows. If you are not yet familiar with Crowdsec, here is a brief presentation: Crowdsec will analyze different log files (Web, firewall, SSH, …

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Nginx: generate a Let’s Encrypt certificate

After seeing how to install and configure Nginx as a reverse proxy and harden security with Crowdsec, I will explain in this tutorial how to generate a Let’s Encrypt certificate. As a reminder, Let’s Encrypt is a free certification authority, which allows you to obtain SSL certificates for free. If you want to generate SSL …

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Nginx Reverse proxy: cache configuration

After seeing how to use Nginx as a reverse proxy, I will explain in this tutorial how to configure the caching of static elements (image, css files, js ….). The use of the cache will reduce the number of HTTP requests to the Web server and therefore reduce this workload. The first step will be …

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Back up your databases with mysqldump

mysqldump is a command line utility that allows you to perform backups of MySQL and MariaDB databases. It is automatically installed during the installation of the MySQL or MariaDB server and it is available for Linux and Windows. Examples : Under Windows, you must go to the folder where the exe is located or indicate …

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Agent FusionInventory: change the URL of GLPI

In this tutorial, I will explain how to modify the URL of the GLPI server on a FusionInventory Agent. You may need to make this type of change for several reasons: GLPI server change Protocol change to switch to HTTPS In this tutorial, we will see the second case, I had to do this manipulation …

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Nginx: configuration as reverse proxy

In this tutorial dedicated to Nginx, I will explain how to configure it in order to have a reverse proxy. Before getting to the heart of the matter, I will quickly introduce you to Nginx and what a reverse proxy. For this tutorial, I used an Ubuntu 20.04 machine. Introducing Nginx Nginx is a web …

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Monitor Veeam in PRTG

Introduction In this tutorial, we will see how to monitor Veeam using PRTG. Having the results of the backups in PRTG makes it possible to centralize the monitoring of the infrastructure in a single console and to reduce notification emails. Prerequisites On the PRTG server, it is necessary to install the Veeam management console, it …

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