Networking Archives - Page 3 of 18

Networking tutorial - IT technology blog

Detect and Prevent ARP Spoofing with Arpwatch and Dynamic ARP Inspection

October 2, 2026

Secure your internal Layer 2 network against ARP poisoning attacks. This tutorial covers passive monitoring with Arpwatch on Linux and active mitigation using Dynamic ARP Inspection and DHCP Snooping on managed switches.

Networking

Stop the Outages: Building High Availability Kea DHCP on Linux

September 7, 2026

Eliminate network downtime by setting up Kea DHCP High Availability. This step-by-step guide covers load balancing, control agent configuration, and failover testing.

Networking

SRv6 on Linux: Modernizing Your ISP Backbone with FRRouting

September 7, 2026

Ditch the complexity of MPLS. Learn how to deploy Segment Routing over IPv6 (SRv6) using Linux and FRRouting to build a programmable, scalable ISP backbone.

Networking

Multi-Vendor Network Automation: Stop Fighting the CLI with NAPALM and Python

September 7, 2026

Ditch the manual CLI work. Learn how to use NAPALM and Python to automate Cisco, Juniper, and Arista devices with a single, unified workflow.

Networking

Build a High-Speed Mesh VPN with Netmaker: Multi-Cloud Networking That Doesn’t Suck

September 6, 2026

Tired of slow multi-cloud networking? Learn how to build a high-performance, self-hosted Mesh VPN using Netmaker and WireGuard to slash latency and egress costs.

Networking

Linux Networking at Scale: Mastering IRQ Affinity, RSS, and RPS

September 6, 2026

Is your Linux server dropping packets despite low CPU usage? Learn how to fix the 'Single Core Trap' by tuning IRQ Affinity, RSS, and RPS for high-performance networking.

Networking

Fixing Linux Network Lag: A Guide to TCP Retransmission

September 6, 2026

Is your Linux server feeling sluggish despite low CPU usage? Learn how to use ss, nstat, and TShark to diagnose TCP retransmissions and fix the network bottlenecks killing your performance.

Networking

Building a Network Performance Testbed: High-Speed Testing with TRex on Linux

September 1, 2026

Ditch iperf3 for serious network testing. This guide shows you how to build a 10Gbps+ testbed using TRex and DPDK to measure true throughput, latency, and IMIX performance on Linux.

Networking

Build Your Own Private 5G Network: A Hands-On Guide with Open5GS and srsRAN

September 1, 2026

Ditch the Wi-Fi lag. This guide shows you how to build a fully functional private 5G network on Linux using Open5GS and srsRAN, starting with a zero-cost virtual simulation.

Networking

Supercharging Linux Networking: A Practical Guide to eBPF TC

September 1, 2026

Ditch the overhead of iptables. This guide shows you how to use eBPF TC to build high-performance, programmable network filters and QoS directly in the Linux kernel.