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Windows Server 2019 — Windows Update installs fail with servicing stack corruption — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 15 July 2019 Affected versions: Windows Server 2019 📖 ~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 […]

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How to Migrate from AIX 7.1 to AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Migrate from AIX 7.1 to 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 migrate from aix 7.1 to aix 7.2 on IBM […]

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How to Configure ZFS Pool Management on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure ZFS Pool Management on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up configure zfs pool management on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux […]

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openSUSE Tumbleweed — ack — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ack — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2013-7069 Upstream summary: ack 2.00 through 2.11_02 allows remote attackers to execute arbitrary code via a (1) –pager, (2) –regex, or (3) –output option in […]

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Understanding Suricata Signatures — step-by-step Security tutorial on Progressive Robot

Understanding Suricata Signatures

In this tutorial you’ll learn how Suricata signatures are structured, and some important options that are commonly used in most rules. Once you are familiar with how to understand the structure and fields in a signature, you’ll be able to write your own signatures that you can combine with a firewall to alert you about most suspicious traffic to your servers, without needing to use other external rulesets.

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Steps to Configure SSL on Tomcat and Setup Auto Redirect from HTTP to HTTPS — step-by-step Security tutorial on Progressive Robot

Steps to Configure SSL on Tomcat and Setup Auto Redirect from HTTP to HTTPS

Secured Socket Layer (SSL) is the cryptography protocol to provide message security over the internet. It works on the notion of Private and Public keys and messages are encrypted before sending it over the network. To configure SSL on Tomcat, we need a digital certificate that can be created using Java keytool for development environment. For production environment, you should get the digital certificate from SSL certificate providers, for example, Verisign or Entrust.

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openSUSE Tumbleweed — libgssglue1 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libgssglue1 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2011-2709 Upstream summary: libgssapi and libgssglue before 0.4 do not properly check privileges, which allows local users to load untrusted configuration files and execute arbitrary […]

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How to Back Up and Restore MySQL Databases on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Back Up and Restore MySQL Databases on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up back up and restore mysql databases on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from […]

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