authentication

Common Problems 118508

Permission denied (publickey) for valid SSH user

🟔 Medium   ā± 5–30 min  Last verified: 14 August 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 Set Up System Center on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Set Up System Center on Windows Server 2016

How to Configure Windows Server 2016 System Center Microsoft System Center is a suite of management products designed to provide unified monitoring, configuration management, data protection, and virtualization management for Windows-based environments. The main components are System Center Operations Manager (SCOM), System Center Configuration Manager (SCCM), System Center Data Protection Manager (DPM), System Center Virtual […]

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How to Set Up Varnish Cache as a Reverse Proxy on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up Varnish Cache as a Reverse Proxy on RHEL 7

How to Set Up Varnish Cache as a Reverse Proxy on RHEL 7 Varnish Cache is a high-performance HTTP reverse proxy and caching accelerator designed to sit in front of your web server. When a visitor requests a page, Varnish checks whether it holds a fresh cached copy. If it does, the response is served […]

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Common Problems 118417

Ubuntu 16.04 LTS SSH permission denied (publickey)

🟔 Medium   ā± 5–30 min  Last verified: 13 August 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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Common Problems 112555

Windows Server 2019 — OneGet package install fails due to missing or duplicate package provider — Fix & Prevention

🟢 Low   ā± 5–30 min  Last verified: 13 August 2019 Affected versions: Windows Server 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 […]

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How to Audit Linux Security with Lynis on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Audit Linux Security with Lynis on RHEL 7

How to Audit Linux Security with Lynis on RHEL 7 Maintaining a secure Linux server requires more than installing updates and setting strong passwords. A comprehensive security audit reveals configuration weaknesses, missing hardening measures, and potential vulnerabilities before attackers can exploit them. Lynis is an open-source security auditing tool that performs an in-depth scan of […]

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Common Problems 113044

Windows Server 2016 — sIDHistory cleanup needed to retire deprecated SIDs after migration — Fix & Prevention

🟠 High   ā± 5–30 min  Last verified: 12 August 2019 Affected versions: Windows Server 2016 šŸ“– ~2 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 Configure NTLM Authentication on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure NTLM Authentication on Windows Server 2016

How to Set Up Windows Server 2016 NTLM Authentication NTLM (NT LAN Manager) is a challenge-response authentication protocol that predates Kerberos in the Windows ecosystem. While Kerberos is the preferred authentication protocol in Windows Server 2016 Active Directory environments, NTLM is still used in several scenarios: when clients connect using IP addresses instead of DNS […]

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How to Install and Configure Kubernetes on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install and Configure Kubernetes on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up install and configure kubernetes 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 step carefully and […]

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Common Problems 113429

Windows Server 2012 R2 – Credential Guard incompatibilities breaking apps – Fix & Prevention

🟠 High   ā± 5–30 min  Last verified: 8 August 2019 Affected versions: Windows Server 2012 R2 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 […]

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