linux server Archives

Networking tutorial - IT technology blog

SR-IOV on Linux: Slashing Latency and Reclaiming CPU for Virtual Workloads

May 23, 2026

Tired of network latency in your VMs? Learn how to configure SR-IOV on Linux to bypass the kernel, reduce CPU overhead, and achieve near-native networking speeds.

Security

Ditch the SSH Key Mess: Centralized Access with Smallstep Certificates

May 17, 2026

Say goodbye to the 'authorized_keys' mess. This guide shows you how to implement SSH Certificates with Smallstep for a centralized, SSO-integrated, and highly secure infrastructure.

Networking

Mastering Smokeping: How to Kill the ‘2 AM Network Ghost’ on Linux

May 6, 2026

Learn how to deploy and configure Smokeping on Linux. Track network latency, jitter, and packet loss over time with historical RRDtool graphs to solve intermittent connectivity issues.

Networking

Mastering Port Mirroring: Using Open vSwitch (OVS) for Passive Linux Monitoring

May 5, 2026

Don't risk production downtime for network visibility. Learn how to configure Open vSwitch Port Mirroring (SPAN) to capture and analyze traffic safely on Linux.

Networking

Netplan on Ubuntu: A Pro’s Guide to YAML Networking

April 21, 2026

Ditch the old /etc/network/interfaces. Learn how to use Netplan on Ubuntu to configure static IPs, DHCP, and DNS using clean YAML syntax while avoiding common pitfalls.

Networking

Ditch the Subscription: Building a Production-Grade Captive Portal with Nodogsplash and Nginx

April 19, 2026

Tired of expensive Wi-Fi subscriptions? Learn how to use Nodogsplash and Nginx to build a high-performance, self-hosted captive portal on Linux with zero licensing fees.

Networking

Site-to-Site VPN with StrongSwan IPsec IKEv2: A Production-Ready Linux Guide

April 18, 2026

Build a high-performance Site-to-Site VPN using StrongSwan on Linux. This guide covers IKEv2 configuration with swanctl, firewall tuning, and MSS clamping for maximum stability.

Networking

Fixing the 2 AM Bandwidth Spike: Practical Traffic Analysis with NetFlow and ntopng

April 11, 2026

Don't let a 2 AM bandwidth spike crash your cluster. Master NetFlow and ntopng to identify top talkers and detect DDoS attacks using metadata analysis.

HomeLab

Ubuntu NFS Server Setup: Your Essential Guide to HomeLab File Sharing

March 24, 2026

This guide walks you through setting up an NFS server on Ubuntu for efficient file sharing in your HomeLab. Learn to configure exports, manage permissions, and connect clients for seamless network storage.

Linux

KVM/QEMU Linux VM Management: A Comprehensive Guide to Virtual Machine Installation, Configuration, and Optimization

March 24, 2026

Dive into the world of Linux virtualization with KVM/QEMU. This guide covers everything from installation and basic VM creation to advanced configuration and performance optimization, sharing real-world insights for efficient virtual machine management.