This tutorial provides a high-level overview of Software-Defined Networking (SDN), a method for producing a dynamic network fabric whose existence is entirely made up of software. By following this guide, you will set up your own software-defined network and create a VPN using ZeroTier One, an open-source application with a web-based user interface.
DNS validation allows for certificate issuance requests to be verified using DNS records, rather than by serving content over HTTP. The acme-dns-certbot tool is used to connect Certbot to a third-party DNS server where the certificate validation records can be set automatically via an API when you request a certificate. The advantage of this is that you don’t need to integrate Certbot directly with your DNS provider , nor do you need to grant it unrestricted access to your full DNS configuration
Learn how to add and delete users on Ubuntu 24.04 with command-line tools. Step-by-step guide for managing user accounts, sudo access, and home directories.
Swap is a portion of hard drive storage that has been set aside for the operating system to temporarily store data that it can no longer hold in RAM. This lets you increase the amount of information that your server can keep in its working memory, with some caveats. The swap space on the hard drive will be used mainly when there is no longer sufficient space in RAM to hold in-use application data.
In this guide, we will look at how to utilize Nginx’s logging module. We’ll set up separate log files for different server blocks and then customize the logging output. We’ll also add additional information about requests (in this tutorial’s example, the time it takes to serve a request) to the access log beyond what Nginx includes by default.
Ansible is a simple, agentless way to automate your infrastructure. If you find yourself deploying WordPress over and over again, Ansible could save you a lot of time.
Backing up your [Apache Kafka](http://kafka.apache.org/) data is an important practice that will help you recover from unintended data loss or bad data added to the cluster due to user error. In this tutorial, you will back up, import, and migrate your Kafka data on a single CentOS 7 installation as well as on multiple CentOS 7 installations on separate servers.
In this tutorial you’ll set up a Barman backup server, make a backup from a primary PostgreSQL database server, and restore to a standby server. This creates a physical backup of the entire database with snapshots at different times.
The previous tutorials in this series guided you through installing, configuring, and running Suricata as an Intrusion Detection (IDS) and Intrusion Prevention (IPS) system. You also learned about Suricata rules and how to create your own. In this tutorial you will explore…
Der Autor wählte den Free and Open Source Fund, um eine Spende im Rahmen des Programms Write for DOnations zu erhalten. Systemprotokolle sind ein äußerst wichtiger Bestandteil für die Verwaltung…
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