OpenLiteSpeed is an optimized open source web server that can be used to manage and serve sites. As far as Linux web servers are concerned, OpenLiteSpeed has some interesting features that make it a solid choice for many installations. It features Apache compatible rewrite…
Introduction How to Migrate from CentOS 8 to Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: ecartis — unauthorised access to admin interface Related CVEs: CVE-2003-0781 CVE-2003-0782 CVE-2004-0913 Upstream summary: A Debian security advisory reports: A problem has been discovered in ecartis, a mailing-list manager, which […]
TimescaleDB is an open-source database optimized for storing time series data. It is implemented as an extension of PostgreSQL and combines the ease-of-use of relational databases and the speed of NoSQL databases. By following this tutorial, you’ll set up TimescaleDB on Ubuntu 18.04, configure it, and learn how to work with it. You’ll run through creating time series databases and making simple queries. Finally, you’ll see how to compress data and get rid of unnecessary data.
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4800-1 Related CVEs: CVE-2016-9179 CVE-2017-1000211 CVE-2021-38165 Upstream summary: It was discovered that Lynx incorrectly handled certain URLs. A remote attacker could possibly use this issue to obtain sensitive information or […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read • Source: AlmaLinux ALSA ALSA-2021:4586 Related CVEs: CVE-2021-42574 Upstream summary: The gcc packages provide compilers for C, C++, Java, Fortran, Objective C, and Ada 95 GNU, as well as related support libraries. Security Fix(es): * Developer […]
Postfix is a mail transfer agent (MTA), an application used to send and receive email. It can be configured so that it can be used to send emails by local application only. In this tutorial, you’ll install and configure Postfix on Ubuntu 20.04 as a send-only SMTP server. You’ll also request free TLS certificates from Let’s Encrypt for your domain and encrypt the outbound emails using them.
🟠 High ⏱ 15–60 min Last verified: 25 May 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2020-2972 Related CVEs: CVE-2020-14578 CVE-2020-14579 CVE-2020-14583 CVE-2020-14556 CVE-2020-14577 CVE-2020-14593 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
This tutorial will show you how to perform a full hot backup of your MySQL or MariaDB databases using Percona XtraBackup on CentOS 7. The resulting database backup can then be backed up to a remote location using rsync, a backup system like Bacula, or the cloud provider backups. The process of restoring the database from a backup is also covered.
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read • Source: Gentoo GLSA GLSA-202210-22 Related CVEs: CVE-2021-3521 CVE-2021-35937 CVE-2021-35938 CVE-2021-35939 CVE-2021-20266 CVE-2021-20271 CVE-2021-3421 Upstream summary: Multiple vulnerabilities have been discovered in RPM. Please review the CVE identifiers referenced below for details. Table of contents Symptom […]
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