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Install Cockpit, Firewalld, and Open Ports on Debian 12 1. Update the System sudo apt update sudo apt upgrade -y 2. Install Cockpit sudo apt install -y cockpit sudo apt install cockpit-networkmanager -y sudo apt install cockpit-doc -y sudo apt install ...

How to Set Up XRDP on Fedora 42 XFCE Follow these steps for a reliable and quick XRDP setup with XFCE on Fedora 42: Install XRDP and XFCE (if not already installed) sudo dnf install xrdp xorgxrdp   2. Enable and Start XRDP Serv...

Overview This guide explains how to set up authenticated email sending from the command line on Fedora using msmtp (a lightweight SMTP client) and s-nail (a mailx-compatible mail utility). This method is ideal for scripts and system notifications in environme...

Overview This guide explains how to set up authenticated email sending from the command line on Debian-based systems (including Proxmox Backup Server) using msmtp (a lightweight SMTP client) and s-nail (a mailx-compatible utility). This is ideal for system no...

Overview This document describes how to install and configure the XRDP server on Fedora 43 with the Xfce desktop environment so that Windows, macOS, and Guacamole clients can connect via RDP. Each Linux user who should be able to log in via XRDP needs their o...

Introduction macOS is notorious for asymmetric SMB performance to Unraid/Samba, especially reads, without client and server tuning. Typical culprits: SMB signing and encryption enabled by default on macOS, adding CPU and latency overhead to reads. Apple...

For Fedora workstations/servers mounting: • Prefer kernel CIFS mounts ( mount -t cifs ) over GVFS/GUI mounts; GVFS is noticeably slower for bulk IO. • Add a basic 10 GbE‑friendly  /etc/sysctl.d/10g.conf  on Fedora, e.g.: • net.core.rmem_max = 134217728  • ...

Introduction This document describes a small, focused kernel network tuning for Debian systems connected via 10 GbE, using a custom /etc/sysctl.d/10g.conf file and the standard sysctl mechanism to apply the settings. These values follow common recommendations...

Bringing iRedMail/SOGo up to production quality is a very reasonable next step, and once that is done it can safely take over archiving and DAV while you de‑emphasize Proton for day‑to‑day mail. Given your skills, the main work is hardening, DNS/auth records, ...

sudo apt install unattended-upgrades sudo dpkg-reconfigure unattended-upgrades  

usermod -aG sudo master How to

Introduction DNS sucks in docker. However, there are two fixes. Fix no. 1 Create /etc/docker/daemon.json: { "dns": ["192.168.1.2", "192.168.1.25"] } sudo systemctl daemon-reload sudo systemctl restart docker sudo docker run --rm alpine sh -c "cat /e...