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How to Use Capsicum Sandboxing on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Use Capsicum Sandboxing 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 use capsicum sandboxing 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 distribution. […]

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Common Problems 118989

Ubuntu 14.04 LTS – NTP sync fails and system clock drifts

🟡 Medium   ⏱ 5–30 min  Last verified: 26 February 2021 Affected versions: Ubuntu 14.04 LTS Ubuntu 14.04 Ubuntu 14.04.6 📖 ~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 […]

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Common Problems 119123

Ubuntu 14.04 LTS pip SSL errors when installing Python packages

🟡 Medium   ⏱ 5–30 min  Last verified: 25 February 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 Always On VPN with Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Always On VPN with Windows Server 2012 R2

How to Configure Always On VPN with Windows Server 2012 R2 Always On VPN is a remote access solution that provides seamless, persistent VPN connectivity for domain-joined Windows clients. Unlike traditional VPN solutions that require users to manually initiate connections, Always On VPN automatically establishes and maintains VPN tunnels without user intervention. On Windows Server […]

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Common Problems 118422

Ubuntu 16.04 DNS Resolution Fails Intermittently

🟡 Medium   ⏱ 5–30 min  Last verified: 23 February 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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Common Problems 112503

Windows Server 2019 — BGP route flapping between edge peers and RRAS gateway impacts WAN stability — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 21 February 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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How to Install MySQL 5.7 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install MySQL 5.7 on Debian 9

Introduction Deploying install mysql 5.7 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 You will need […]

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How to Configure Logwatch Log Analyzer on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Logwatch Log Analyzer on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure logwatch log analyzer 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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How to Set Up Dovecot IMAP Server on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Dovecot IMAP Server on Debian 9

Introduction How to Set Up Dovecot IMAP Server 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 Enable AppArmor on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Enable AppArmor on Debian 9

Introduction Deploying enable apparmor 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 you begin, ensure […]

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