May 2020 - Page 28 of 69

How to Configure Disk Encryption with VeraCrypt on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Disk Encryption with VeraCrypt on Debian 10

Introduction This guide explains how to Configure Disk Encryption with VeraCrypt on Debian 10 on Debian 10 Buster. Debian Buster uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 10 install with […]

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Oracle Linux 8 — java-1.8.0-openjdk — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — java-1.8.0-openjdk — vulnerability — patch and remediation guide (ELSA-2020-4347)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4347 Related CVEs: CVE-2020-14803 CVE-2020-14782 CVE-2020-14796 CVE-2020-14781 CVE-2020-14792 CVE-2020-14779 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Oracle Linux 8 — java-11-openjdk — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — java-11-openjdk — vulnerability — patch and remediation guide (ELSA-2020-0128)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-0128 Related CVEs: CVE-2020-2583 CVE-2020-2655 CVE-2020-2590 CVE-2020-2593 CVE-2020-2601 CVE-2020-2604 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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How To Monitor Nagios Alerts with Alerta on CentOS 7 — step-by-step Linux tutorial on Progressive Robot

How To Monitor Nagios Alerts with Alerta on CentOS 7

Alerta is a web application used to consolidate and de-duplicate alerts from multiple monitoring systems and visualize them on a single screen. Alerta can integrate with many well-known monitoring tools like Nagios, Zabbix, Sensu, InfluxData Kapacitor, and…

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How To Install WordPress With Docker Compose — step-by-step Docker tutorial on Progressive Robot

How To Install WordPress With Docker Compose

WordPress is a free and open-source Content Management System (CMS) that is widely used to launch new websites. Running WordPress typically involves installing a LAMP or LEMP stack by hand, work that you can simplify with tools like Docker and Docker Compose. This tutorial will show you how to set up a multi-container WordPress installation with an Nginx reverse proxy. It will also show you how to obtain TLS/SSL certificates for your application domain.

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Oracle Linux 8 — flac — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — flac — vulnerability — patch and remediation guide (ELSA-2023-5046)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-5046 Related CVEs: CVE-2020-22219 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Sync Time with Chrony on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Sync Time with Chrony on RHEL 9

Accurate time synchronization is not optional on a server — it is a hard requirement. TLS certificate validation fails when the clock is wrong by more than a few minutes. Kerberos authentication rejects tickets with a clock skew over 5 minutes. Cron jobs fire at the wrong time. Log correlation across multiple servers becomes impossible […]

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