Network Archives - Page 10 of 12 - ITFROMZERO

Mastering Policy-Based Routing (PBR) on Linux: Route Traffic Like a Pro

By IT From Zero April 20, 2026

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.

Network

Mastering the socat Command on Linux: Port Forwarding, Relays, and SSL Tunnels in Practice

By IT From Zero April 18, 2026

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.

Network

Port Knocking: How to Hide SSH Ports and Make Your Linux Server Invisible to Botnets

By IT From Zero April 18, 2026

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.

Network

DNS Configuration on Linux: Permanently Fix Settings Being Lost After Reboot

By IT From Zero April 15, 2026

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.

Network

Saving Linux Server Wi-Fi via CLI: Mastering nmcli and wpa_supplicant

By IT From Zero April 13, 2026

Lost Ethernet on a Linux Server? A detailed guide on using nmcli and wpa_supplicant to configure Wi-Fi via CLI, plus practical tips for handling routing and metric issues.

Network

Linux Security: Implementing DoH and DoT to ‘Stay Hidden’ from ISPs

By IT From Zero April 12, 2026

Don't let ISPs know what you're accessing. A detailed guide on encrypting DNS with DoT and DoH on Linux for total privacy protection.

Network

Mastering Traffic Control (tc): Bandwidth Limiting and Traffic Prioritization on Linux

By IT From Zero April 3, 2026

Don't let a backup script crash your Web Service. Learn how to use tc (Traffic Control) to limit bandwidth, prioritize SSH/Web traffic, and optimize Linux network performance.

Network

Configuring VPN Clients on Linux: Battle-Tested Experience with WireGuard, OpenVPN, and IPsec

By IT From Zero April 1, 2026

A hands-on guide to configuring WireGuard, OpenVPN, and IPsec on Linux. Learn how to troubleshoot routing, DNS, and MTU issues from a system administrator's perspective.

Network

Turn Linux into a Wireless Access Point: Build Your Own “Pro” Wi-Fi Router with hostapd and dnsmasq

By IT From Zero March 31, 2026

A detailed guide to turning a Linux machine into a Wireless Access Point using hostapd and dnsmasq, with real-world troubleshooting experience for packet loss and network performance optimization.

Network

How to Install and Configure OpenVPN Server on Linux: Easy Secure Remote Network Access

By IT From Zero March 29, 2026

This article provides a detailed guide on how to install and configure an OpenVPN Server on Linux to create a secure VPN connection. You'll learn about different VPN solutions, why OpenVPN is chosen, and how to deploy it step-by-step easily using an automated script.