Networking

How to Configure IPsec Transport Mode for Server-to-Server Encryption on Windows Server 2019 — Windows Server 2019 tutorial on Progressive Robot

How to Configure IPsec Transport Mode for Server-to-Server Encryption on Windows Server 2019

Introduction to IPsec Transport Mode IPsec (Internet Protocol Security) Transport Mode encrypts and authenticates the payload of IP packets while leaving the IP header visible. Unlike Tunnel Mode (used for VPNs), Transport Mode secures traffic between two specific servers across an existing network without changing the routing path. On Windows Server 2019, IPsec Transport Mode […]

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El Ecosistema de Docker: Creación de Redes y Comunicación — step-by-step Docker tutorial on Progressive Robot

El Ecosistema de Docker: Creación de Redes y Comunicación

Cuando se construyen sistemas distribuidos para funcionar como contenedores de Docker, la comunicación y la creación de redes se vuelve extremadamente importante. En una arquitectura orientada a servicio, sin lugar a dudas, se basa en gran medida en la comunicación entre los componentes para que funcionen correctamente.

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How to Set Up a Git Server with Gitea on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up a Git Server with Gitea on RHEL 8

Gitea is a lightweight, self-hosted Git service written in Go that provides a GitHub-like web interface with a tiny resource footprint — ideal for teams that want a simple hosted Git server without the overhead of a full GitLab installation. On RHEL 8, Gitea can be set up in under an hour using a single […]

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How to Set Up IPsec with StrongSwan on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up IPsec with StrongSwan on FreeBSD 12

Introduction This guide explains how to Set Up IPsec with StrongSwan on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for […]

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How to Set Up Automatic Security Updates on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Automatic Security Updates on Debian 9

Introduction Deploying set up automatic security updates on debian 9 on a Debian 9 Stretch 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 Configure a Network Adapter on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure a Network Adapter on Windows Server 2016

How to Set Up Windows Server 2016 Network Adapter Configuring the network adapter correctly on Windows Server 2016 is one of the first and most critical tasks after installation. A server that uses DHCP for its IP address can cause connectivity disruptions whenever the lease changes. This guide covers assigning a static IP address, configuring […]

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Common Problems 118017

Ubuntu 18.04 OOM Killer Terminates Database Service

🟡 Medium   ⏱ 5–30 min  Last verified: 21 October 2019 📖 ~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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How to Set Up DRBD on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up DRBD on FreeBSD 12

Introduction Deploying set up drbd on freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base […]

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How to Use Remote Server Administration Tools (RSAT) on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Use Remote Server Administration Tools (RSAT) on Windows Server 2012 R2

How to Use Remote Server Administration Tools (RSAT) on Windows Server 2012 R2 Remote Server Administration Tools (RSAT) for Windows Server 2012 R2 is a collection of MMC snap-ins, command-line tools, PowerShell modules, and management consoles that enable administrators to manage Windows Server 2012 R2 roles and features remotely from a Windows 8.1 workstation or […]

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How to Set Up Alertmanager with Slack on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up Alertmanager with Slack on FreeBSD 12

Introduction This guide explains how to Set Up Alertmanager with Slack on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for […]

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