IT, Cloud & DevOps Blog

Debian 9 — znc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — znc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 June 2019 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-14055 CVE-2019-9917 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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Arch Linux — mosquitto — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — mosquitto — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201810-1 Related CVEs: CVE-2018-12543 CVE-2017-9868 Upstream summary: Type: denial of service. Status: Fixed. Affected: 1.5.1-1. Fixed in: 1.5.3-1. Group: AVG-772. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Debian 9 — simplesamlphp — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — simplesamlphp — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 June 2019 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-12867 CVE-2019-3465 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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How to Install Zabbix on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Zabbix on RHEL 8

Zabbix is a mature, enterprise-grade open-source monitoring platform capable of tracking availability, performance, and log data for thousands of hosts from a single server. It ships with auto-discovery, customizable triggers, rich alerting integrations, and a polished web interface. Installing Zabbix 6.x on RHEL 8 takes roughly thirty minutes and gives you production-ready monitoring backed by […]

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Common Problems 121554

Debian 9 – cron jobs stop running due to anacron or timer overlap

🟡 Medium   ⏱ 5–30 min  Last verified: 6 June 2019 Affected versions: Debian 9 📖 ~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 117999

Ubuntu 18.04 LTS Failed to Fetch Repository Metadata

🟡 Medium   ⏱ 5–30 min  Last verified: 6 June 2019 Affected versions: 18.04 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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How to Install and Configure Routing and Remote Access (RRAS) on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Install and Configure Routing and Remote Access (RRAS) on Windows Server 2019

Introduction to Routing and Remote Access Service on Windows Server 2019 Routing and Remote Access Service (RRAS) is a built-in Windows Server 2019 feature that provides multi-protocol routing, remote access VPN, and site-to-site VPN connectivity. RRAS can function as a software router supporting RIP, OSPF (through third-party plugins), BGP, and static routes; as a dial-up […]

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