Networking Archives - Page 7 of 10

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Configuring GRE and VXLAN Tunnels on Linux: Building Reliable Overlay Networks

April 19, 2026

Tunnels are the backbone of modern cloud networks. Learn to configure GRE for L3 routing and VXLAN for L2 overlays on Linux with production-ready MTU settings and troubleshooting tips.

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

DIY Dynamic DNS with Cloudflare: No More 2 AM Remote Access Failures

April 17, 2026

Stop getting locked out of your server. Ditch the annoying 'free' DDNS providers and build a professional-grade, automated update script using Cloudflare's API in under 15 minutes.

Networking

Boost Linux Network Performance: A Practical Guide to Google BBR

April 15, 2026

Boost your Linux server's network speed by switching from CUBIC to Google's BBR. This guide shows you how to slash latency and maximize throughput on real-world connections.

Networking

Build a Global Virtual LAN with ZeroTier: Secure P2P Connectivity Without Public IPs

April 13, 2026

Tired of fighting with CGNAT and complex VPN setups? This guide shows you how to use ZeroTier to create a secure, peer-to-peer virtual LAN that works anywhere in the world.

Networking

Centralized Log Management for Network Devices and Firewalls with ELK Stack

April 12, 2026

Learn how to build a high-performance, centralized logging system for your network infrastructure using the ELK Stack. Move from reactive firefighting to proactive management with real-world configuration examples.

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.

Networking

Stop Configuring Switches One by One: Master Network Automation with Python and Netmiko

April 10, 2026

Ditch manual SSH logins. Learn how to use Python and Netmiko to automate Cisco and Juniper batch configurations, error handling, and multi-vendor management.

Networking

Keepalived & VRRP: Build a Floating IP for High Availability on Linux

April 9, 2026

Keepalived implements VRRP on Linux to give your servers a shared floating IP address. When the primary node fails, the standby automatically claims the VIP in seconds. This step-by-step guide covers installation, configuration, health check scripts, and failover testing on Ubuntu/Debian.

Networking

Setting Up a Squid Proxy Server on Linux: Access Control, Content Filtering, and Bandwidth Caching

April 8, 2026

Squid proxy server gives you fine-grained control over your network's outbound traffic — access control by IP or user, content filtering via domain blocklists, and HTTP caching to reduce bandwidth costs. This guide walks through a complete production-ready setup on Linux.