June 2020 - Page 19 of 66

Common Problems 114435

RHEL 9: SELinux Denials Breaking httpd Access

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 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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Arch Linux — rdesktop — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — rdesktop — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201902-5 Related CVEs: CVE-2018-8800 CVE-2018-8799 CVE-2018-8798 CVE-2018-8797 CVE-2018-8796 CVE-2018-8795 CVE-2018-8794 CVE-2018-8793  +11 more Upstream summary: Type: multiple issues. Status: Fixed. Affected: 1.8.3-1. Fixed in: 1.8.4-1. Group: AVG-871. Table of contents […]

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How to Set Up OpenVSwitch on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up OpenVSwitch on SLES 15

Introduction This tutorial covers How to Set Up OpenVSwitch on SLES 15 on SLES 15. SLES 15 (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 15 system is up to date: zypper refresh […]

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Common Problems 113392

Windows Server 2012 R2 — Server fails to boot after BCD corruption — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 29 May 2026 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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How to Configure the AIX Firewall with IPFilter on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure the AIX Firewall with IPFilter on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure the aix firewall with ipfilter on ibm aix […]

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How to Set Up a DNS Server with Bind9 on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Configure DKIM, SPF and DMARC on Ubuntu 26.04

DKIM (DomainKeys Identified Mail), SPF (Sender Policy Framework), and DMARC (Domain-based Message Authentication, Reporting and Conformance) are three DNS-based email authentication standards that protect your domain from spoofing and significantly improve email deliverability. This guide configures all three on Ubuntu 26.04 LTS with Postfix. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS […]

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How to Configure Unattended Upgrades on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Monitor System Resources on Ubuntu 26.04

Knowing how your server uses CPU, memory, disk, and network resources is essential for capacity planning and troubleshooting. Ubuntu 26.04 LTS comes with several built-in tools and supports popular third-party monitors. This guide covers the most useful commands and tools for resource monitoring. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server […]

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SQL SELECT statement with COUNT() function — step-by-step DevOps tutorial on Progressive Robot

SQL SELECT statement with COUNT() function

URL: https://www.progressiverobot.com/sql-select-statement-with-count/ Hey, folks! In this article, we will be focusing on SQL SELECT statement along with COUNT() function. What is SQL SELECT statement? [SQL SELECT statement](/community/tutorials/sql-select) helps us select and display the data values from the particular table of the database. Syntax: SELECT columns FROM Table-name; Example: SELECT * from Info; SELECT * statement […]

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How to Apply CIS Benchmark Hardening to Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Apply CIS Benchmark Hardening to Debian 9

Introduction Deploying apply cis benchmark hardening to debian 9 on a Debian 9 Stretch 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. Prerequisites You will […]

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