Security Hardening

How to Configure AIX as an NIS Server on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure AIX as an NIS Server on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure aix as an nis server on ibm aix […]

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How to Install SQLite on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install SQLite on FreeBSD 12

Introduction This guide explains how to Install SQLite on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege separation. […]

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openSUSE Tumbleweed — python-Django — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python-Django — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2023:0077-1 (see also SUSE bugzilla) Related CVEs: CVE-2015-3982 CVE-2015-5145 CVE-2015-5963 Upstream summary: The session.flush function in the cached_db backend in Django 1.8.x before 1.8.2 does not properly flush the session, which allows […]

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How to Set Up BGP Routing with BIRD on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up BGP Routing with BIRD on Debian 9

Introduction This guide explains how to Set Up BGP Routing with BIRD on Debian 9 on Debian 9 Stretch. Debian Stretch 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 9 install […]

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FreeBSD 12 — mariadb100-client — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — mariadb100-client — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 September 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mysql — denial of service vulnerability Related CVEs: CVE-2015-3152 CVE-2015-4792 CVE-2015-4802 CVE-2015-4807 CVE-2015-4815 CVE-2015-4826 CVE-2015-4830 CVE-2015-4836  +12 more Upstream summary: Openwall reports: C client library for MySQL (libmysqlclient.so) has use-after-free […]

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Ubuntu 16.04 — aria2 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — aria2 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 September 2019 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4869-1 Related CVEs: CVE-2019-3500 Upstream summary: It was discovered that aria2 could accidentally leak authentication data. An attacker could possibly use this to gain access to sensitive information. Table of […]

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How to Configure SSH Hardening on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure SSH Hardening on Debian 9

Introduction Deploying configure ssh hardening on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will need […]

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SLES 15 — libgraphite2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libgraphite2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 September 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2016:0779-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-1521 CVE-2017-5436 CVE-2018-7999 Upstream summary: The directrun function in directmachine.cpp in Libgraphite in Graphite 2 1.2.4, as used in Mozilla Firefox before 43.0 and Firefox […]

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Alpine Linux edge — lxterminal — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — lxterminal — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.3.0-r1 📖 ~4 min read  •  Source: Alpine secdb entry — lxterminal 0.3.0-r1 Related CVEs: CVE-2016-10369 Upstream summary: Alpine community repository for vedge ships lxterminal 0.3.0-r1 which addresses CVE-2016-10369. Table of contents Symptom & Impact Environment […]

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How to Configure Patch Management with WSUS on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Patch Management with WSUS on Windows Server 2016

How to Set Up Windows Server 2016 Patch Management with WSUS Windows Server Update Services (WSUS) is Microsoft’s free server role that enables administrators to manage the distribution of updates released through Microsoft Update to computers in a network. Rather than having each server and workstation download updates directly from Microsoft, WSUS downloads updates once […]

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