Tls Ssl

Common Problems 119041

Ubuntu 14.04 LTS SSL handshake failures after certificate chain update

🟠 High   ⏱ 5–30 min  Last verified: 21 May 2021 Affected versions: 14.04 📖 ~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 […]

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Common Problems 117402

Ubuntu 20.04 LTS – apt update fails with Release file not valid yet – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 21 May 2021 Affected versions: Ubuntu 20.04 LTS 📖 ~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 113499

Windows Server 2012 R2 – AD CS certificate template error – The requested certificate template is not supported – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 21 May 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 112483

Windows Server 2019 — IPv6 stateless DHCP options not delivered reliably to dual-stack clients — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 21 May 2021 Affected versions: Windows Server 2019 📖 ~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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Common Problems 117564

Ubuntu 20.04 LTS Python pip SSL Certificate Verify Failed

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2021 📖 ~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 Network Policy Server (NPS) on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Network Policy Server (NPS) on Windows Server 2019

How to Configure Network Policy Server (NPS) on Windows Server 2019 Network Policy Server (NPS) is Microsoft’s implementation of a Remote Authentication Dial-In User Service (RADIUS) server and proxy. NPS centralizes authentication, authorization, and accounting for wireless connections, authenticating switches, remote access VPN connections, and dial-up connections. NPS enables you to enforce consistent network access […]

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How to Configure TLS and SSL Protocol Hardening on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure TLS and SSL Protocol Hardening on Windows Server 2012 R2

How to Configure TLS and SSL Protocol Hardening on Windows Server 2012 R2 Windows Server 2012 R2 ships with support for outdated and vulnerable SSL/TLS protocol versions (SSL 2.0, SSL 3.0, TLS 1.0) and weak cipher suites that are incompatible with modern security standards. Compliance frameworks including PCI DSS 3.2+, HIPAA, and NIST 800-52 Rev […]

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Common Problems 115029

RHEL 8 – Podman Pull Fails Due to Untrusted Registry Certificate

🟡 Medium   ⏱ 5–30 min  Last verified: 18 May 2021 📖 ~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 OSPF with FRRouting on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure OSPF with FRRouting on FreeBSD 12

Introduction This guide explains how to Configure OSPF with FRRouting 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 […]

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How to Install cAdvisor for Container Monitoring on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install cAdvisor for Container Monitoring on FreeBSD 12

Introduction How to Install cAdvisor for Container Monitoring on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for […]

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