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How to Install and Configure Varnish Cache on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install and Configure Varnish Cache on Debian 10

Introduction Deploying install and configure varnish cache on debian 10 on a Debian 10 Buster 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 Ensure […]

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How to Install Elasticsearch on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Elasticsearch on RHEL 8

Elasticsearch is a distributed, RESTful search and analytics engine capable of handling large volumes of structured and unstructured data in near real time. It is the core component of the Elastic Stack, widely used for log aggregation, full-text search, and observability pipelines. On RHEL 8, installing Elasticsearch requires adding the official Elastic repository and configuring […]

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How to Configure Software Distribution via Group Policy on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Software Distribution via Group Policy on Windows Server 2012 R2

How to Configure Software Distribution via Group Policy on Windows Server 2012 R2 Group Policy Software Distribution (GPSD) is the built-in Microsoft mechanism for deploying MSI packages to domain-joined computers without requiring any additional tools or agents. Managed through the Group Policy Object (GPO) infrastructure, software assignment and publishing allows administrators to automatically install, upgrade, […]

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How to Set Up Consul Service Mesh on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Consul Service Mesh on Debian 10

Introduction How to Set Up Consul Service Mesh on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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How to Install Grafana on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install Grafana on Debian 10

Introduction This guide explains how to Install Grafana 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 the standard repositories […]

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Debian 9 — pam-python — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — pam-python — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 May 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-16729 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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openSUSE Tumbleweed — spamassassin — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — spamassassin — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2019:1831-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-15705 CVE-2018-11780 CVE-2018-11805 CVE-2019-12420 CVE-2020-1930 CVE-2020-1931 CVE-2020-1946 CVE-2007-0451  +1 more Upstream summary: A denial of service vulnerability was identified that exists in Apache SpamAssassin before […]

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How to Set Up a VPN Server on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up a VPN Server on Windows Server 2019

Introduction to VPN Server on Windows Server 2019 A Virtual Private Network server allows remote users and branch offices to establish encrypted tunnels over the public internet to access internal corporate resources securely. Windows Server 2019 includes built-in VPN server capabilities through the Routing and Remote Access Service (RRAS) and supports multiple modern protocols including […]

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How to Set Up ClamAV Antivirus on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Set Up ClamAV Antivirus 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 set up clamav antivirus on ibm aix 7.1 on […]

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How to Install Docker Compose on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install Docker Compose on Debian 10 (DEBIAN-10-2)

Introduction How to Install Docker Compose on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. This […]

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