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How to Set Up a LEMP Stack on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up a LEMP Stack on Oracle Linux 9

Introduction How to Set Up a LEMP Stack 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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Common Problems 115579

RHEL 7 sudo failures caused by PAM or sudoers syntax errors

đźź  High   ⏱ 5–30 min  Last verified: 23 April 2023 Affected versions: RHEL 7 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 & Hardening Related Errors & […]

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Common Problems 112967

Windows Server 2016 — PowerShellGet install-module fails with repository policy is untrusted — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 23 April 2023 Affected versions: Windows Server 2016 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 & Hardening Related Errors […]

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FreeBSD 13 — libqb — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — libqb — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 April 2023 Affected versions: FreeBSD 13 đź“– ~4 min read  â€˘  Source: FreeBSD VuXML VuXML topic: libqb — Buffer overflow Related CVEs: CVE-2023-39976 Upstream summary: [email protected] reports: log_blackbox.c in libqb before 2.0.8 allows a buffer overflow via long log messages because the header size is not […]

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AlmaLinux 9 — samba — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — samba — multiple vulnerabilities (11 CVEs) — patch and remediation guide

đźź  High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 đź“– ~4 min read  â€˘  Source: AlmaLinux ALSA ALSA-2023:2127 Related CVEs: CVE-2022-38023 CVE-2022-2127 CVE-2023-34966 CVE-2023-34967 CVE-2023-34968 CVE-2023-3961 CVE-2023-4091 CVE-2023-42669  +3 more Upstream summary: Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet […]

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Common Problems 111835

Windows Server 2022 RRAS NAT Stops Translating Outbound Client Traffic – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 23 April 2023 Affected versions: Windows Server 2022 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 & Hardening Related Errors […]

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Debian 11 — intel-mediasdk — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — intel-mediasdk — multiple vulnerabilities (15 CVEs) — patch and remediation guide

đźź  High   ⏱ 15–60 min  Last verified: 23 April 2023 Affected versions: Debian 11 (bullseye) đź“– ~4 min read  â€˘  Source: Debian Security Tracker Related CVEs: CVE-2022-27170 CVE-2022-34346 CVE-2022-34841 CVE-2022-35883 CVE-2022-36289 CVE-2023-22656 CVE-2023-45221 CVE-2023-47169  +7 more Upstream summary: Protection mechanism failure in the Intel(R) Media SDK software before version 22.2.2 may allow an authenticated […]

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What is Docker? — step-by-step Docker tutorial on Progressive Robot

What is Docker?

Docker is a popular open source containerization tool used to provide a portable and consistent runtime environment for software applications, while consuming less resources than a traditional server or virtual machine. Docker uses containers, isolated user-space environments that run at the operating system level and share system resources such as the kernel and the filesystem.

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Spring Validation Example - Spring MVC Form Validator — step-by-step DevOps tutorial on Progressive Robot

Spring Validation Example – Spring MVC Form Validator

URL: https://www.progressiverobot.com/spring-validation-example-mvc-validator/ When we accept user inputs in any web application, it becomes necessary to validate them. We can validate the user input at the client-side using JavaScript but it's also necessary to validate them at server side to make sure we are processing valid data in case the user has javascript disabled. Spring Validation […]

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