authentication

Common Problems 112409

Windows Server 2019 — Domain trust relationship breaks after VM snapshot restore — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 10 January 2021 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 Manage Systemd Services on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Manage Systemd Services on Oracle Linux 8

Introduction Setting up manage systemd services on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Manage Systemd Services on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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Common Problems 113589

Windows Server 2012 R2 – Just-in-Time admin elevation fails through PAM workflows – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 January 2021 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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Common Problems 112915

Windows Server 2016 – Kerberos KRB_AP_ERR_MODIFIED and SPN duplication – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 January 2021 Affected versions: Windows Server 2016 📖 ~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 Set Up Suricata IDS/IPS on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Suricata IDS/IPS on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying set up suricata ids/ips on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up Suricata IDS/IPS on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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How to Set Up WordPress with Apache2 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up WordPress with Apache2 on Debian 9

Introduction Deploying set up wordpress with apache2 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 Before […]

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How to Configure SSH Key Authentication on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure SSH Key Authentication on SLES 12

Introduction This tutorial covers How to Configure SSH Key Authentication on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper […]

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How to Configure Custom Metrics with Prometheus on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Custom Metrics with Prometheus on Oracle Linux 8

Introduction How to Configure Custom Metrics with Prometheus on 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 […]

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How to Deploy Applications with Helm on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Deploy Applications with Helm on Oracle Linux 8

Introduction This tutorial demonstrates how to Deploy Applications with Helm on Oracle Linux 8 on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with the […]

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How to Configure Windows Server 2019 for SAML/SSO Integration — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Windows Server 2019 for SAML/SSO Integration

Understanding SAML/SSO Integration on Windows Server 2019 Security Assertion Markup Language (SAML) 2.0 enables Single Sign-On (SSO) between an Identity Provider (IdP) and Service Providers (SPs). Active Directory Federation Services (AD FS) on Windows Server 2019 acts as a SAML 2.0 Identity Provider, allowing users to authenticate once with their on-premises Active Directory credentials and […]

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