networking Archives - Page 7 of 12

Networking tutorial - IT technology blog

Beyond Telnet: Mastering Netcat and Socat for Linux Network Triage

April 27, 2026

Master Netcat and Socat for precise Linux network debugging. This guide provides practical examples for port scanning, 100MB/s+ file transfers, and secure SSL relays.

Networking

VPN Kill Switch on Linux: A 180-Day Production Post-Mortem

April 26, 2026

A deep dive into building a production-grade VPN Kill Switch for Linux. Using iptables and WireGuard, this guide shows you how to prevent IP leaks with kernel-level enforcement.

Networking

OpenWrt on Your Home Router: Custom DNS, VPN, and QoS After 6 Months of Real Use

April 25, 2026

After six months running OpenWrt in production across three routers, this guide covers what actually works: encrypted custom DNS with stubby, WireGuard VPN setup, and SQM QoS with CAKE to eliminate bufferbloat. Practical commands, real-world results.

Networking

Why Your Website Hangs: Fixing MTU and MSS Issues on Linux

April 23, 2026

Is your Linux server hanging on large page loads? Learn how to diagnose and fix MTU and MSS bottlenecks that cause network timeouts over VPNs and restricted ISPs.

Networking

HTTP/3 (QUIC) on Nginx: Killing Latency and Head-of-Line Blocking

April 23, 2026

Is your site lagging on mobile? Discover how to eliminate Head-of-Line blocking and slash latency by implementing HTTP/3 (QUIC) on Nginx with this step-by-step guide.

Networking

DIY SD-WAN: How We Used pfSense to Kill Downtime in Our Small Office

April 23, 2026

Tired of internet outages? Learn how to combine two ISP connections into one rock-solid network using pfSense, load balancing, and smart failover tactics.

DevOps

Beyond iptables: How We Scaled Kubernetes Networking with Cilium and eBPF

April 22, 2026

Learn how to replace legacy iptables with Cilium CNI. This guide covers eBPF installation, Layer 7 security policies, and real-time observability using Hubble.

Networking

Wake-on-LAN Over the Internet: Configure Your Router and Linux Server for Remote Boot

April 21, 2026

A practical guide to configuring Wake-on-LAN on Linux and your router so you can remotely power on any physical machine over the internet. Covers ethtool setup, systemd persistence, router port forwarding, and a full wake+connect script.

Networking

Centralize Your Network Auth: A Deep Dive into FreeRADIUS and LDAP

April 21, 2026

Ditch manual user management. Learn how to set up FreeRADIUS with LDAP to centralize your Wi-Fi and VPN authentication for a more secure, scalable network.

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.