Logging Monitoring

Windows Server 2016 — KB5033371 — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5033371 — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5033371 • MSRC update-guide entry Related CVEs: CVE-2023-35641 CVE-2023-35628 CVE-2023-35630 CVE-2023-36011 CVE-2023-21740 CVE-2023-20588 CVE-2023-36012 CVE-2023-36003  +9 more Affected components: Windows Server 2016 Windows Server 2016 (Server Core installation) Table of contents Symptom […]

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How to Implement Zero Trust Architecture on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Implement Zero Trust Architecture on Windows Server 2022

Zero Trust Principles Applied to Windows Server Zero Trust is a security model built on three core principles: verify explicitly (always authenticate and authorize based on all available data points), use least privilege access (limit user rights to the minimum required for the task), and assume breach (design as if an attacker is already inside […]

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NetBSD 9.4 — ipsec-tools — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — ipsec-tools — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • June 27, 2023
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2007-1841 CVE-2008-3651 CVE-2008-3652 CVE-2009-1574 CVE-2016-10396 Upstream summary: pkgsrc audit-packages flagged ipsec-tools<0.6 for vulnerability class 'denial-of-service'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0398 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Oracle Linux 9 — tpm2-tss security and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — tpm2-tss security and — enhancement update — new behaviour and fixes (ELSA-2023-6685)

  • June 27, 2023
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 27 June 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6685 Related CVEs: CVE-2023-22745 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Configure a Firewall with nftables on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure a Firewall with nftables on Oracle Linux 9

Introduction How to Configure a Firewall with nftables on Oracle Linux 9 on Oracle Linux 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

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Debian 12 — uap-core — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — uap-core — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • June 27, 2023
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 27 June 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-20164 CVE-2020-5243 Upstream summary: An issue was discovered in regex.yaml (aka regexes.yaml) in UA-Parser UAP-Core before 0.6.0. A Regular Expression Denial of Service (ReDoS) issue allows remote attackers […]

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Debian 12 — gemmi — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — gemmi — vulnerability — patch and remediation guide

  • June 27, 2023
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 27 June 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2023-49287 Upstream summary: TinyDir is a lightweight C directory and file reader. Buffer overflows in the `tinydir_file_open()` function. This vulnerability has been patched in version 1.2.6. Table of […]

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NetBSD 9.4 — postgresql84 — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — postgresql84 — vulnerability — patch and remediation guide

  • June 27, 2023
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged postgresql84{,-server,-client}<8.4.11 for vulnerability class 'multiple-vulnerabilities'. Reference: http://www.postgresql.org/about/news/1377/ Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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How to Set Up SFTP Server with Chroot Jail on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up SFTP Server with Chroot Jail on Debian 12

  • June 27, 2023
  • Linux
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Introduction Deploying set up sftp server with chroot jail on debian 12 on a Debian 12 Bookworm 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. […]

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Common Problems 120126

Debian 12 Apache TLS Failure from Incomplete Certificate Chain

  • June 27, 2023
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 27 June 2023 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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