Boot Startup

How to Set Up a LAMP Stack on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Set Up a LAMP Stack on FreeBSD 14

Introduction FreeBSD 14 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up set up a lamp stack on freebsd 14 on FreeBSD 14 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 […]

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How to Configure Apache2 MPM Worker on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Apache2 MPM Worker on Debian 12

Introduction How to Configure Apache2 MPM Worker on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm 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 12. […]

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Common Problems 120171

Debian 12 – MariaDB fails to start due to InnoDB corruption

🔴 Critical   ⏱ 5–30 min  Last verified: 8 February 2024 Affected versions: Debian 12 📖 ~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 SSH Key Authentication on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up SSH Key Authentication on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up set up ssh key authentication on debian 12 on Bookworm leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bookworm freeze. Follow each step carefully […]

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Amazon Linux 2 — grub2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — grub2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2023-2292 Related CVEs: CVE-2023-4692 CVE-2023-4693 CVE-2021-3695 CVE-2021-3696 CVE-2021-3697 CVE-2022-2601 CVE-2022-28733 CVE-2022-28734  +12 more Upstream summary: An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow […]

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How to Set Up WireGuard VPN on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Set Up WireGuard VPN on FreeBSD 14 (ON-FREEBSD-14)

Introduction This guide explains how to Set Up WireGuard VPN on FreeBSD 14 on FreeBSD 14. 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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Ubuntu 22.04 — u-boot — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — u-boot — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 31 January 2024 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8056-1 Related CVEs: CVE-2024-57255 CVE-2024-57254 CVE-2024-57257 CVE-2024-57258 CVE-2024-57256 CVE-2024-57259 CVE-2022-2347 CVE-2022-30552  +5 more Upstream summary: Simon Diepold discovered that U-Boot incorrectly handled certain DHCP responses. An attacker on the local […]

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Common Problems 122692

NFS Mounts Intermittently Freeze Applications

🟠 High   ⏱ 5–30 min  Last verified: 25 January 2024 Affected versions: FreeBSD 14 📖 ~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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AlmaLinux 9 — booth — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — booth — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2024:3661 Related CVEs: CVE-2024-3049 CVE-2022-2553 Upstream summary: The Booth cluster ticket manager is a component to bridge high availability clusters spanning multiple sites, in particular, to provide decision inputs to local Pacemaker […]

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Ubuntu 20.04 — twitter-bootstrap4 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — twitter-bootstrap4 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 January 2024 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7556-1 Related CVEs: CVE-2024-6484 CVE-2024-6531 CVE-2024-6485 Upstream summary: It was discovered that Bootstrap did not correctly sanitize certain input in the carousel component. An attacker could possibly use this issue […]

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