Introduction This guide explains how to Set Up Alertmanager Email Notifications on Debian 9 on Debian 9 Stretch. Debian Stretch 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 9 install with […]
Introduction This guide explains how to Set Up BGP Routing with BIRD 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 […]
Introduction This guide explains how to Set Up SSH Key Authentication 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 […]
Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure nginx as a tcp/udp load balancer on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each […]
How to Set Up Windows Server 2019 SMB over QUIC SMB over QUIC is a feature introduced in Windows Server 2022 that allows SMB 3 file sharing over the QUIC transport protocol (UDP port 443) instead of TCP port 445. While Windows Server 2019 itself does not support the SMB over QUIC server role, Windows […]
Introduction Deploying configure logstash 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 Ensure Debian 9 Stretch […]
Introduction How to Set Up Yubikey Authentication on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch 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 9. […]
How to Configure NPS for 802.1X Authentication on Windows Server 2012 R2 Network Policy Server (NPS) is the Microsoft implementation of RADIUS (Remote Authentication Dial-In User Service) on Windows Server 2012 R2. When combined with 802.1X-capable network switches and wireless access points, NPS enables port-based network access control: devices can only connect to the network […]
Introduction to Ansible for Windows Server 2019 Ansible is an open-source IT automation platform developed by Red Hat that enables infrastructure as code for provisioning, configuration management, application deployment, and orchestration. While Ansible was originally designed for Linux management using SSH, it fully supports Windows Server 2019 management using WinRM (Windows Remote Management) as the […]
🟡 Medium ⏱ 5–30 min Last verified: 6 January 2020 Affected versions: Ubuntu 14.04 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 […]
