July 2026

Common Problems 116119

Ubuntu 26.04 LTS – fail2ban bans trusted subnet due to aggressive jail policy

🟡 Medium   ⏱ 5–30 min  Last verified: 31 July 2026 Affected versions: Ubuntu 26.04 LTS Ubuntu 26.04 Ubuntu 26.04.1 đź“– ~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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How to Configure SLES 16 for Edge Computing — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Configure SLES 16 for Edge Computing

Introduction This tutorial covers How to Configure SLES 16 for Edge Computing on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper refresh […]

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How to Configure IPv6 on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Configure IPv6 on SLES 16

Introduction This tutorial covers How to Configure IPv6 on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper refresh && […]

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FreeBSD 15 — nettle — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — nettle — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 31 July 2026 Affected versions: FreeBSD 15 đź“– ~4 min read  â€˘  Source: FreeBSD VuXML VuXML topic: nettle 3.7.2 — fix serious ECDSA signature verify bug Upstream summary: Niels Möller reports: I've prepared a new bug-fix release of Nettle, a low-level cryptographics library, to fix a serious […]

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Windows Server 2025 — KB5079473 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2025

Windows Server 2025 — KB5079473 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

đźź  High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2025 đź“– ~4 min read  â€˘  Source: Microsoft KB5079473 • MSRC update-guide entry Related CVEs: CVE-2026-23669 CVE-2026-23671 CVE-2026-23672 CVE-2026-23673 CVE-2026-24283 CVE-2026-24285 CVE-2026-24287 CVE-2026-24289  +12 more Affected components: Windows Server 2025 Microsoft summary: Use after free in RPC Runtime allows an […]

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FreeBSD 15 — telepathy-gabble — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — telepathy-gabble — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 31 July 2026 Affected versions: FreeBSD 15 đź“– ~4 min read  â€˘  Source: FreeBSD VuXML VuXML topic: telepathy-gabble — TLS verification bypass Related CVEs: CVE-2013-1431 Upstream summary: Simon McVittie reports: This release fixes a man-in-the-middle attack. If you use an unencrypted connection to a "legacy Jabber" (pre-XMPP) […]

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FreeBSD 15 — openh — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — openh — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 31 July 2026 Affected versions: FreeBSD 15 đź“– ~4 min read  â€˘  Source: FreeBSD VuXML VuXML topic: cisco — OpenH264 Decoding Functions Heap Overflow Vulnerability Related CVEs: CVE-2004-0097 CVE-2025-27091 Upstream summary: Cisco reports: A vulnerability in the decoding functions of OpenH264 codec library could allow a remote, […]

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How to Deploy a Spring Boot Application on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Deploy a Spring Boot Application on SLES 16

Introduction This tutorial covers How to Deploy a Spring Boot Application on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: […]

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