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How to Configure Organisational Units in Active Directory on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Organisational Units in Active Directory on Windows Server 2012 R2

How to Configure Organisational Units in Active Directory on Windows Server 2012 R2 Organisational Units (OUs) are the fundamental containers within Active Directory that allow administrators to organise directory objects into logical administrative units. A well-designed OU structure simplifies Group Policy application, delegation of administrative authority, and object management at scale. On Windows Server 2012 […]

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How to Configure Nginx as a TCP/UDP Load Balancer on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Nginx as a TCP/UDP Load Balancer on Debian 9 (ON-DEBIAN-9)

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure nginx as a tcp/udp load balancer on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each […]

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FreeBSD 12 — zabbix32-server — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — zabbix32-server — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Zabbix — Remote code execution Related CVEs: CVE-2017-2824 Upstream summary: mitre reports: An exploitable code execution vulnerability exists in the trapper command functionality of Zabbix Server 2.4.X. A specially crafted […]

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Arch Linux — lynis — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — lynis — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201705-20 Related CVEs: CVE-2017-8108 Upstream summary: Type: arbitrary file overwrite. Status: Fixed. Affected: 2.4.9-1. Fixed in: 2.5.0-1. Group: AVG-278. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How To Setup Your Own VPN With PPTP — step-by-step Linux tutorial on Progressive Robot

How To Setup Your Own VPN With PPTP

A Point-To-Point Tunneling Protocol (PPTP) allows you to implement your own VPN very quickly, and is compatible with most mobile devices. Even though PPTP is less secure than OpenVPN, it is faster and uses less CPU resources.

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Ubuntu 18.04 — libpam-radius-auth — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libpam-radius-auth — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 August 2019 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4290-1 Related CVEs: CVE-2015-9542 Upstream summary: It was discovered that libpam-radius-auth incorrectly handled certain long passwords. A remote attacker could possibly use this issue to cause libpam-radius-auth to crash, resulting […]

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openSUSE Tumbleweed — signing-party — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — signing-party — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2019:1388-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-11627 CVE-2018-15599 Upstream summary: gpg-key2ps in signing-party 1.1.x and 2.x before 2.10-1 contains an unsafe shell call enabling shell injection via a User ID. Table […]

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