Networking

How to Configure SNMP Monitoring on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure SNMP Monitoring on RHEL 7

How to Configure SNMP Monitoring on RHEL 7 Simple Network Management Protocol (SNMP) is one of the most widely supported protocols for monitoring network devices, servers, storage appliances, and virtually any managed infrastructure component. Configuring SNMP on Red Hat Enterprise Linux 7 allows your monitoring platform — whether Zabbix, LibreNMS, Nagios, or Prometheus with the […]

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Cómo configurar un firewall con UFW en Debian 9 — step-by-step Linux tutorial on Progressive Robot

Cómo configurar un firewall con UFW en Debian 9

UFW o Uncomplicated Firewall es una interfaz para iptables orientada a simplificar el proceso de configuración de un firewall. Aunque iptables es una herramienta sólida y flexible, puede resultar difícil para los principiantes aprender a usarlo para configurar…

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How to Configure StrongSwan IPsec on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure StrongSwan IPsec on Debian 10

Introduction Deploying configure strongswan ipsec 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 You will need […]

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How to Implement Network Segmentation on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Implement Network Segmentation on SLES 12

Introduction This tutorial covers How to Implement Network Segmentation on SLES 12 on SLES 12. SLES 12 (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. Prerequisites Ensure your SLES 12 system is up to date: zypper refresh […]

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How to Configure Virtual Ethernet on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Virtual Ethernet 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 configure virtual ethernet on ibm aix 7.1 on IBM […]

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How to Configure Edge Transport Server for Email on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Edge Transport Server for Email on Windows Server 2016

Introduction Windows Server 2016 includes an optional Edge Transport server role as part of the Exchange Server infrastructure. An Edge Transport server sits in the perimeter network (DMZ), handling all inbound and outbound Internet email to shield internal Exchange servers from direct Internet exposure. It performs anti-spam filtering, recipient validation, connection filtering, and policy enforcement […]

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How to Set Up SonarQube Code Analysis on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up SonarQube Code Analysis on Debian 10

Introduction Deploying set up sonarqube code analysis 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 You […]

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How to Install and Use Deno on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install and Use Deno on Debian 10

Introduction Deploying install and use deno 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 You will […]

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Common Problems 118410

Ubuntu 16.04 no sound output on speakers or headset

🟡 Medium   ⏱ 5–30 min  Last verified: 18 August 2020 📖 ~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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