authentication

Common Problems 112925

Windows Server 2016 – NTLM fallback when Kerberos should be used – Fix & Prevention

🟔 Medium   ā± 5–30 min  Last verified: 5 July 2019 Affected versions: Windows Server 2016 šŸ“– ~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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Common Problems 117934

Ubuntu 18.04 boot hangs at splash screen

🟔 Medium   ā± 5–30 min  Last verified: 4 July 2019 šŸ“– ~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 & Cross-Refs References & Further […]

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How to Configure Pluggable Authentication Modules on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure Pluggable Authentication Modules 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 pluggable authentication modules on ibm aix 7.2 on […]

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How to Configure Audit Policy on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Audit Policy on Windows Server 2012 R2

How to Configure Audit Policy on Windows Server 2012 R2 A well-configured audit policy is the foundation of security monitoring and forensic investigation on Windows Server 2012 R2. Audit policies generate security event log entries when specific activities occur — such as logon attempts, privilege use, object access, or policy changes. Windows Server 2012 R2 […]

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How to Install Perl and CPAN Modules on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Perl and CPAN Modules on Debian 9

Introduction How to Install Perl and CPAN Modules on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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How to Configure DHCP with DNS Dynamic Update on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure DHCP with DNS Dynamic Update on Windows Server 2019

Introduction to DHCP with DNS Dynamic Update on Windows Server 2019 DNS Dynamic Update (DDNS) allows the DHCP server to automatically register and deregister DNS records on behalf of DHCP clients whenever they obtain, renew, or release IP addresses. Without DDNS, administrators must manually maintain DNS A records and PTR records every time a machine […]

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How to Set Up Active Directory Rights Management Services on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Active Directory Rights Management Services on Windows Server 2019

Introduction to Active Directory Rights Management Services Active Directory Rights Management Services (AD RMS) is an information protection technology included with Windows Server 2019 that uses encryption and policy enforcement to restrict access to documents, emails, and other sensitive content. AD RMS works by issuing licenses that specify what operations a user can perform on […]

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How to Configure OpenSSH Server on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure OpenSSH Server on Windows Server 2016

Introduction OpenSSH Server is available for Windows Server 2016 as an optional Windows feature (from Windows 10 1809 / Server 2019 onward it is built-in; for Server 2016 it is installed as a standalone package). Installing OpenSSH on Windows Server 2016 enables SSH-based remote access — the same client tools used on Linux — giving […]

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How to Deploy a Ruby on Rails Application on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Deploy a Ruby on Rails Application on RHEL 7

How to Deploy a Ruby on Rails Application on RHEL 7 Ruby on Rails is a full-featured web application framework that follows the Model-View-Controller (MVC) pattern and emphasizes convention over configuration. Deploying a Rails application on RHEL 7 in a production-grade configuration requires several components working together: Rails itself running under Puma (a multi-threaded Ruby […]

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How to Configure Active Directory Audit Policy on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Active Directory Audit Policy on Windows Server 2019

Introduction to Active Directory Auditing Active Directory is the authentication and authorization backbone of most Windows enterprise environments. Any changes to AD objects—user creations, group membership changes, permission modifications, login failures—can indicate insider threats, compromised accounts, or misconfigurations. Windows Server 2019 provides granular auditing capabilities through Advanced Audit Policy that let you capture exactly what […]

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