🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2021-21897 Upstream summary: A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An […]
The prospect of migrating a database can be intimidating, especially when migrating from one database management system to another. This tutorial provides instructions on how to install pgLoader, an open-source database migration tool, and use it to migrate a remote MySQL database to PostgreSQL over an SSL connection.
![Установка веб-сервера Apache в CentOS 8. [Краткое руководство.] — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/how-to-install-the-apache-web-server-on-centos-8-quickstart-ru-82721-featured.png "Установка веб-сервера Apache в CentOS 8. [Краткое руководство.] 3")
HTTP-сервер Apache — самый широко используемый веб-сервер в мире. Он имеет множество мощных функций, включая динамически загружаемые модули, надежную поддержку различных медиаформатов и интеграцию с другим популярным программным обеспечением. С…
How to Configure Storage Spaces on Windows Server 2019 Storage Spaces is a software-defined storage (SDS) feature in Windows Server 2019 that allows administrators to pool physical disks from multiple drives or enclosures and create virtual disks with resiliency (mirroring, parity) and thin provisioning. Storage Spaces abstracts the underlying hardware, enabling commodity disks to provide […]
In this article we will be looking at enhancing system security by increasing the level of monitoring performed. We are going to set up Linux Socket Monitor (LSM) which sends out alerts when a new socket / port is created, which is a potential signal of an intrusion by an unknown application taking over its host.
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2020-15954 Upstream summary: KDE KMail 19.12.3 (aka 5.13.3) engages in unencrypted POP3 communication during times when the UI indicates that encryption is in use. Table of contents Symptom […]
MQTT is a machine-to-machine messaging protocol, designed to provide lightweight publish/subscribe communication to “Internet of Things” devices. Mosquitto is a popular MQTT server (or broker, in MQTT parlance) that has great community support and is easy to install and configure. In this tutorial, we’ll install Mosquitto, retrieve SSL certificates from Let’s Encrypt, and set up our broker to use SSL to secure our password-protected MQTT communications.
Платформа Docker позволяет разработчикам упаковывать и запускать приложения как контейнеры. Контейнер — это изолированный процесс, выполняемый в общей операционной системе, и представляющий из себя облегченную альтернативу виртуальным машинам. Хотя…
In this workshop kit, we’ll prepare you to introduce learners to Git and GitHub, the version control system that Hacktoberfest uses to track your progress and repository hosting service that shares projects to collaborate on. By the end of this workshop, learners will be ready to submit their first pull request!
Breadth-First Search and Depth-First Search are two techniques of traversing graphs and trees. In this tutorial, we will focus mainly on BFS and DFS traversals in trees. What is Depth First Search (DFS)? The algorithm begins at the root node and then it explores each branch before [backtracking](/community/tutorials/n-queens-problem-java-c-plus-plus). It is implemented using stacks. Often while […]
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