January 2020 - Page 43 of 69

Common Problems 114028

RHEL 10 Boot Drops to Emergency Mode from Invalid fstab Entry

🔴 Critical   ⏱ 5–30 min  Last verified: 19 May 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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openSUSE Tumbleweed — luajit — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — luajit — vulnerability — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2020:198-1 Related CVEs: CVE-2019-19391 Upstream summary: In LuaJIT through 2.0.5, as used in Moonjit before 2.1.2 and other products, debug.getinfo has a type confusion issue that leads to arbitrary memory write or […]

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How to Set Up pf Firewall on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up pf Firewall on FreeBSD 12

Introduction How to Set Up pf Firewall on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 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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Common Problems 112427

Windows Server 2019 – tcpip.sys DPC latency spikes degrade throughput – Fix and Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Windows Server 2019 📖 ~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 12 — php52-exif — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — php52-exif — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php — multiple vulnerabilities Related CVEs: CVE-2011-4566 CVE-2011-4885 Upstream summary: php development team reports: Security Enhancements and Fixes in PHP 5.3.9: Added max_input_vars directive to prevent attacks based on hash […]

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FreeBSD 12 — wget+ipv — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — wget+ipv — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: wget — multiple vulnerabilities Related CVEs: CVE-2004-1487 CVE-2004-1488 Upstream summary: Jan Minar reports that there exists multiple vulnerabilities in wget: Wget erroneously thinks that the current directory is a fair […]

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How to Configure Active Directory Federation Services (AD FS 3.0) on Windows Server 2012 R2 — Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Active Directory Federation Services (AD FS 3.0) on Windows Server 2012 R2

How to Configure Active Directory Federation Services (AD FS 3.0) on Windows Server 2012 R2 Active Directory Federation Services 3.0 (AD FS) on Windows Server 2012 R2 provides Security Token Service (STS) functionality, enabling federated identity and single sign-on (SSO) across organizational boundaries and cloud applications. AD FS issues security tokens to authenticated users, which […]

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FreeBSD 12 — age — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — age — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: age — age vulnerable to malicious plugin names, recipients, or identities causing arbitrary binary execution Upstream summary: Filippo Valsorda reports: A plugin name containing a path separator may allow an […]

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How to Enable OCSP Stapling on Nginx on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Enable OCSP Stapling on Nginx on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up enable ocsp stapling on nginx on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully […]

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How To Write Your First Program in Java — step-by-step Programming tutorial on Progressive Robot

How To Write Your First Program in Java

In this tutorial, you’ll create a simple “Hello, World!” program in [Java](https://www.java.com/en/). The “Hello, World!” program is a simple and complete first program for beginners, and it’s a good way to make sure your environment is properly configured. By creating a “Hello, World” program, you’ll start learning Java’s basic syntax as well as the compilation and execution process of a Java program. Once you’re finished, you’ll be able to write and run basic Java code.

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