DNS

How to Configure Apache2 Virtual Hosts on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Configure Apache2 Virtual Hosts on FreeBSD 15

Introduction How to Configure Apache2 Virtual Hosts on FreeBSD 15 is a core administration task for any FreeBSD 15 server operator. FreeBSD 15 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 packet […]

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CentOS Stream 9 — bind — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — bind — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 24 June 2026 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2026:8075 Related CVEs: CVE-2026-1519 CVE-2025-40778 CVE-2025-40780 CVE-2024-11187 CVE-2024-1737 CVE-2024-1975 CVE-2024-4076 CVE-2023-4408  +12 more Upstream summary: The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. […]

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Common Problems 116067

Ubuntu 26.04 LTS – rsyslog not forwarding logs to remote collector – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 24 June 2026 Affected versions: Ubuntu 26.04 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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Ubuntu 24.04 — unbound — multiple vulnerabilities (18 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — unbound — multiple vulnerabilities (18 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 24 June 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8282-1 Related CVEs: CVE-2026-40622 CVE-2026-33278 CVE-2026-42923 CVE-2026-44390 CVE-2026-42944 CVE-2026-41292 CVE-2026-42959 CVE-2026-42960  +10 more Upstream summary: Andrew Griffiths discovered that Unbound did not properly handle certain DNSCrypt packets. A remote attacker […]

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Common Problems 116111

Ubuntu 26.04 LTS – Secure Boot blocks third-party kernel module – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 June 2026 Affected versions: Ubuntu 26.04 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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FreeBSD 15 — bind910-base — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — bind910-base — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 23 June 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: bind — denial of service vulnerability Related CVEs: CVE-2015-1349 CVE-2015-4620 CVE-2015-5477 CVE-2015-5722 CVE-2015-5986 Upstream summary: ISC reports: An incorrect boundary check in openpgpkey_61.c can cause named to terminate due to […]

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Common Problems 116126

CUPS Printing Stops After Upgrade

🟡 Medium   ⏱ 5–30 min  Last verified: 23 June 2026 📖 ~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 113977

RHEL 10 – SSH key authentication denied due to strict permission mismatch – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 23 June 2026 Affected versions: RHEL 10 📖 ~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 116024

Ubuntu 26.04 LTS – Docker daemon fails after cgroup configuration mismatch – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 June 2026 Affected versions: Ubuntu 26.04 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 116127

Ubuntu 26.04 LTS – fail2ban not banning repeated SSH brute-force attempts – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 June 2026 Affected versions: Ubuntu 26.04 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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