linux networking Archives - Page 3 of 3 - ITFROMZERO

Build Your Own Captive Portal with nodogsplash: Professional Public Wi-Fi Control on Linux

By IT From Zero June 27, 2026

Set up a professional Captive Portal on Linux with nodogsplash. Detailed guide on managing Wi-Fi access, limiting users, and customizing splash pages effectively.

Network

Configuring Traffic Mirroring on Linux with tc-mirred: Copy Packets to IDS/IPS Without Disrupting Service

By IT From Zero June 24, 2026

Traffic Mirroring with tc-mirred lets you copy all packets to a passive IDS/IPS device without disrupting production traffic. This guide walks through configuring both ingress and egress mirroring step by step, along with tips for selective traffic filtering and automating the setup with a systemd service.

Network

Configuring VXLAN on Linux: A Layer 2 Network Extension Solution for Containers and VMs

By IT From Zero June 1, 2026

Want to connect virtual machines across multiple physical servers as if they were on the same switch? This Linux VXLAN configuration guide will help you build a professional Layer 2 overlay network, overcoming the limitations of traditional VLANs.

Network

Deploying Multicast on Linux: A Bandwidth-Saving Solution for Large-Scale Transmission Systems

By IT From Zero May 31, 2026

Optimize internal network bandwidth by configuring Multicast on Linux. Detailed guide on setting up PIM-SM, IGMP, and troubleshooting TTL and RPF check errors.

Fedora

Fedora Network Administration via CLI: nmcli and nmtui Tips from Basic to Advanced

By IT From Zero May 22, 2026

Forget the GUI; here's how to master NetworkManager on Fedora using nmcli and nmtui. Detailed guide on configuring static IP, Bonding, and VPN via the command line.

Network

Installing and Configuring Open vSwitch (OVS) on Linux: VLAN, Bonding, and SDN

By IT From Zero May 20, 2026

Open vSwitch (OVS) is a powerful virtual switch for Linux virtualization environments, supporting VLAN 802.1Q, LACP bonding, VXLAN tunneling, and OpenFlow for SDN integration. This guide covers installation, practical configuration, and when to choose OVS over Linux Bridge.

Network

Configuring GRE and IPIP Tunnels on Linux: Lightweight Site-to-Site Connectivity Without a VPN

By IT From Zero April 30, 2026

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.

Network

Basic Linux Router Setup: Guide to Configuring NAT and Packet Forwarding

By IT From Zero March 18, 2026

A detailed guide on how to transform a Linux machine into a basic router. This article will walk you through configuring Network Address Translation (NAT), including Masquerading and Port Forwarding, along with enabling Packet Forwarding, providing practical commands and clear explanations to help you build and manage your network effectively.

Network

Network Bonding on Linux: Configure Bandwidth Aggregation and Automatic Failover for Servers

By IT From Zero February 28, 2026

Network bonding combines multiple physical network cards into a single logical interface, ensuring automatic failover when a card fails and increasing server bandwidth. This guide covers practical configuration on Ubuntu (netplan) and CentOS/RHEL (nmcli), complete with failover testing and monitoring.

Network

netstat vs ss: Analyzing Network Connections and Listening Ports on Linux

By IT From Zero February 28, 2026

A hands-on comparison of netstat and ss from real-world production server management — pros and cons of each tool, using ss for listening ports, filtering connections by IP, and debugging abnormal traffic in the middle of a live incident.