Posted inNetwork
Implementing Dynamic Routing on Linux with FRRouting (FRR): From OSPF to BGP
Instead of manual static route configuration, use FRRouting (FRR) to automate your Linux network. A detailed guide on practical OSPF and BGP setup.
Posted inNetwork
Wake-on-LAN (WoL) on Linux: Don’t Let Turning On Your Server Become a Nightmare
Stop letting remote server management haunt you. Here is a detailed guide on configuring Wake-on-LAN on Linux to boot your server remotely with a single command.
Posted inNetwork
Configuring GRE and IPIP Tunnels on Linux: Lightweight Site-to-Site Connectivity Without a VPN
A guide to configuring GRE and IPIP tunnels on Linux. This article focuses on practical setup, MTU/MSS optimization to prevent packet loss, and persistent configuration.
Posted inNetwork
Mastering Network Namespaces: Building Your Own Isolated Network Lab on Linux
A detailed guide on using Network Namespaces on Linux for network isolation. A lightweight VM alternative for testing applications and system management.
Posted inNetwork
Headscale: Self-Host Your Own Tailscale Mesh VPN Control Plane
Headscale is an open-source implementation of the Tailscale control plane that lets you self-host your entire mesh VPN management infrastructure on your own server. This guide shares hands-on experience from six months of running it in production with ~30 nodes, covering installation, configuration, and debugging NAT traversal issues.
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Setting up Mesh VPN with Tailscale on Linux: Remote Server Access and CGNAT Bypass Without Port Forwarding
Forget the worries of port forwarding or CGNAT. A detailed guide on installing Tailscale on Linux to create a secure Mesh VPN for remote server access anywhere.
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Mastering Policy-Based Routing (PBR) on Linux: Route Traffic Like a Pro
Don't let backup traffic clog your main connection. A detailed guide on using Policy-Based Routing (PBR) on Linux to intelligently route traffic based on source IP and Port.
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Mastering the socat Command on Linux: Port Forwarding, Relays, and SSL Tunnels in Practice
socat is a powerful Linux command-line tool for port forwarding, TCP/UDP relays, and SSL tunnels — all with a single command. This guide walks through real-world scenarios from basic port forwarding and multi-hop relays to wrapping plain TCP services with SSL.
Posted inNetwork
Port Knocking: How to Hide SSH Ports and Make Your Linux Server Invisible to Botnets
Port Knocking is a security technique that completely hides SSH ports from port scanners. Learn how to install knockd on Linux to protect your server from brute-force attacks.
Posted inNetwork
DNS Configuration on Linux: Permanently Fix Settings Being Lost After Reboot
Tired of losing DNS settings in /etc/resolv.conf after every reboot? This guide shows you how to properly configure DNS on Linux using Netplan, nmcli, and systemd-resolved for long-term stability.