Kernel Drivers

How to Configure Nginx with ModSecurity WAF on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Nginx with ModSecurity WAF on RHEL 8

ModSecurity is not limited to Apache — it can also protect Nginx deployments through a dedicated dynamic module called ngx_http_modsecurity_module. The module embeds the ModSecurity v3 library directly into Nginx’s request processing pipeline, enabling the same OWASP Core Rule Set that Apache users rely on. On RHEL 8, Nginx is available from the AppStream module […]

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How to Encrypt Disk Partitions with LUKS on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Encrypt Disk Partitions with LUKS on RHEL 7

How to Encrypt Disk Partitions with LUKS on RHEL 7 Linux Unified Key Setup (LUKS) is the standard for disk encryption on Linux, providing a robust, well-documented format for encrypted block devices. By encrypting partitions with LUKS, you ensure that data remains unreadable if physical drives are removed or a server is decommissioned without proper […]

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Common Problems 112551

Windows Server 2019 Large File Copy Stalls at 99 Percent Over SMB 3 Encryption – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 24 July 2019 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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Common Problems 112543

Windows Server 2019 — NLB cluster convergence loops after adding new node with mismatched host priority — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 24 July 2019 Affected versions: Windows Server 2019 📖 ~2 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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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-26385)

🟠 High   ⏱ 15–60 min  Last verified: 24 July 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-26385 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 […]

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Common Problems 115435

RHEL 7 SELinux Denies httpd Write Access

🟠 High   ⏱ 5–30 min  Last verified: 23 July 2019 Affected versions: RHEL 7 📖 ~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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How to Install Helm Package Manager for Kubernetes on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Helm Package Manager for Kubernetes on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up install helm package manager for kubernetes on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step […]

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Common Problems 118994

Ubuntu 14.04 LTS Apache2 Fails to Start After Config Change

🟡 Medium   ⏱ 5–30 min  Last verified: 22 July 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 & Cross-Refs References & Further […]

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How to Patch AIX with Fix Central Downloads on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Patch AIX with Fix Central Downloads 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 patch aix with fix central downloads on ibm aix […]

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

How to Set Up NFS on SLES 15

Introduction This tutorial covers How to Set Up NFS 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. Step 1 — Install NFS Server zypper install -y nfs-kernel-server Step 2 […]

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