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How to Set Up ModSecurity WAF with Apache on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up ModSecurity WAF with Apache on RHEL 7

How to Set Up ModSecurity WAF with Apache on RHEL 7 ModSecurity is the most widely deployed open-source Web Application Firewall (WAF), and it integrates natively with Apache as a dynamic module. When paired with the OWASP Core Rule Set (CRS), ModSecurity can detect and block a broad range of web attacks including SQL injection, […]

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Oracle Linux 8 — openssl — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — openssl — security and stability fixes — required update (ELSA-2021-4424)

🟡 Medium   ⏱ 10–30 min  Last verified: 8 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4424 Related CVEs: CVE-2021-23840 CVE-2021-23841 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Common Problems 118521

Ubuntu 16.04 LTS – SSH login fails with Permission denied (publickey) – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 8 April 2021 Affected versions: Ubuntu 16.04 LTS 📖 ~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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AlmaLinux 8 — openslp — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — openslp — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:4295 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Common Problems 115085

RHEL 8 rsyslog Forwarding Stops on TLS Handshake Errors

🟡 Medium   ⏱ 5–30 min  Last verified: 8 April 2021 📖 ~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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AlmaLinux 8 — systemtap — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — systemtap — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2022:1890 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Manage Paging Space on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Manage Paging Space 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 manage paging space on ibm aix 7.1 on IBM […]

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A dense packed mass of identical dark blocks on the left reorganising into a wide open lattice of connected bright channels on the right, a closed operating model becoming a frontier workplace

Adopt Business AI and Transform into a Frontier Workplace

Almost every organisation has bought business AI and almost none has changed how the work is actually done, which is why the numbers on the board slide still describe usage rather than outcome. This guide sets out the four stages a business AI programme passes through — assistance, workflow redesign, agents, and orchestration — what has to change at each one, and why the constraint is the operating model rather than the model. It covers use case selection, the data and permission foundations that agents expose, agent identity and control planes, security threats specific to agentic deployments, the regulatory position after the EU’s Digital Omnibus delay, what business AI actually costs once consumption and oversight are included, and the metrics that survive a finance review.

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