![How To Install Linux, Nginx, MySQL, PHP (LEMP stack) on Ubuntu 20.04 [Quickstart] — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-20-04-quickstart-81487-featured.png "How To Install Linux, Nginx, MySQL, PHP (LEMP stack) on Ubuntu 20.04 [Quickstart] 1")
How To Install Linux, Nginx, MySQL, PHP (LEMP stack) on Ubuntu 20.04 [Quickstart]
In this quickstart guide, we’ll install a LEMP stack (Nginx, MySQL and PHP-FPM) on an Ubuntu 20.04 server.
How to Configure OpenDKIM with Postfix on Debian 12
Introduction This guide explains how to Configure OpenDKIM with Postfix on Debian 12 on Debian 12 Bookworm. Debian Bookworm uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 12 install with the […]
Windows Server 2016 — KB5028226 — multiple vulnerabilities (20 CVEs) — patch and remediation guide
🔴 Critical ⏱ 15–90 min Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read • Source: Microsoft KB5028226 • MSRC update-guide entry Related CVEs: CVE-2023-35365 CVE-2023-35366 CVE-2023-35367 CVE-2023-32057 CVE-2023-35297 CVE-2023-33166 CVE-2023-33167 CVE-2023-33168 +12 more Affected components: Windows Server 2016 Windows Server 2016 (Server Core installation) Table of contents Symptom […]
Oracle Linux 9 — shim — bug fix update — issues resolved (ELSA-2024-1903)
🟠 High ⏱ 15–60 min Last verified: 1 September 2023 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2024-1903 Related CVEs: CVE-2023-40551 CVE-2023-40548 CVE-2023-40549 CVE-2023-40546 CVE-2023-40550 CVE-2023-40547 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
NetBSD 9.4 — xalan-j — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read • Source: pkgsrc audit-packages entry Related CVEs: CVE-2014-0107 Upstream summary: pkgsrc audit-packages flagged xalan-j>=2.7.0<2.7.2 for vulnerability class 'security-bypass'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0107 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]
How to Set Up a Flask Application on CentOS Stream 9
Introduction Setting up set up a flask application on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up a Flask Application on CentOS Stream 9, with all the commands you need, the SELinux and firewalld […]
Debian 12 SSH Public Key Authentication Fails
🟠 High ⏱ 5–30 min Last verified: 1 September 2023 Affected versions: Debian 12 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]
NetBSD 9.4 — unalz — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read • Source: pkgsrc audit-packages entry Related CVEs: CVE-2005-3862 CVE-2006-0950 Upstream summary: pkgsrc audit-packages flagged unalz<0.40 for vulnerability class 'buffer-overflow'. Reference: http://www.kipple.pe.kr/win/unalz/ Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]
FreeBSD 13 — py38-configobj — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 1 September 2023 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: Configobj — Regular Expression Denial of Service attack Related CVEs: CVE-2023-26112 Upstream summary: [email protected] reports: All versions of the package configobj are vulnerable to Regular Expression Denial of Service (ReDoS) […]
FreeBSD 12 — p5-Spreadsheet-ParseExcel — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 1 September 2023 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: p5-Spreadsheet-ParseExcel — Remote Code Execution Vulnerability Related CVEs: CVE-2023-7101 Upstream summary: Spreadsheet-ParseExcel reports: Spreadsheet::ParseExcel version 0.65 is a Perl module used for parsing Excel files. Spreadsheet::ParseExcel is vulnerable to an […]
