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Networking tutorial - IT technology blog

Self-Hosting a STUN/TURN Server with coturn on Linux: Solving NAT Traversal for WebRTC and VoIP

October 11, 2026

Deploy and harden a dedicated coturn STUN/TURN relay on Linux. Learn how to configure dynamic HMAC auth tokens, open firewall ranges, and verify WebRTC relay candidates with Trickle ICE.

Networking

How to Install and Configure MikroTik CHR on Proxmox VE for Your Network Lab

October 11, 2026

Build a robust virtual routing layer inside Proxmox VE using MikroTik Cloud Hosted Router (CHR). This hands-on guide details how to import the RAW disk image via CLI, structure isolated lab bridges, and configure baseline NAT routing.

Security

Deploying Apache Guacamole as a Bastion Host on Docker: Secure Web-Based SSH and RDP with 2FA

October 11, 2026

Learn how to build a clientless bastion host with Apache Guacamole, Docker, and PostgreSQL. Secure your internal SSH and RDP endpoints behind a browser-based gateway protected by TOTP two-factor authentication.

Linux

Mastering Systemd Timers: The Modern Cron Alternative for Linux Task Scheduling

October 11, 2026

Tired of silent cron job failures and missing logs? Learn how systemd timers provide modern task scheduling on Linux with native dependency checks, persistent missed-run triggers, and centralized journalctl logging.

Programming

High-Performance Asynchronous Programming in Rust with Tokio: Taming Tasks, Channels, and Concurrency Under Load

October 11, 2026

A deep dive into troubleshooting stalled async services in Rust with Tokio. Learn how to prevent thread starvation, manage bounded channels, and safely balance tasks under heavy production workloads.

Security

Deploy External Secrets Operator on Kubernetes: Sync Vault and Cloud Secret Managers

October 10, 2026

Sync secrets safely into Kubernetes without committing credentials to Git. This hands-on guide walks through the trade-offs of modern secret management and shows how to set up External Secrets Operator (ESO) with HashiCorp Vault and cloud providers.

Networking

Self-Host a ZeroTier Network Controller with ZTNET on Linux: Build a Private P2P SD-WAN

October 10, 2026

Learn how to self-host a private ZeroTier network controller on Linux using ZTNET and Docker. Build an unlimited, self-managed peer-to-peer SD-WAN overlay network across your multi-cloud and edge infrastructure.

Programming

Mastering Python AsyncIO: Deep Dive into Event Loops, Tasks, and Semaphores for High-Performance Code

October 10, 2026

Learn how Python AsyncIO uses the event loop, coroutines, and semaphores to eliminate I/O bottlenecks. Discover practical techniques to control concurrency and offload blocking tasks for scalable, high-performance backends.

Programming

Modern C++20 Concepts and Ranges: Safe Generic Code Under Fire

October 10, 2026

Eliminate 800-line template error traces and cut compile times by migrating to C++20 Concepts and Ranges. Discover how explicit constraints and zero-copy lazy pipelines modernize production C++ systems.

Linux

High Availability with Keepalived on Linux: Virtual IP and Automated Failover

October 10, 2026

When your primary web node crashes at 2 AM, every second of downtime counts. Here is how to configure Keepalived on Linux with a floating Virtual IP and automated health checks for sub-two-second, seamless failover.

Mitigate DDoS with BGP Flowspec and ExaBGP on Linux: Automated Routing-Level Packet Filtering

Deploy Harbor on Docker: Self-Host a Secure Private Container Registry with Trivy and Image Signing for Your HomeLab

Building a Production-Ready Text-to-SQL Engine with Vanna.ai and Python

Deploy CrowdSec on Linux: Building a Distributed IPS to Block Brute Force and Web Attacks

Route-Based IPsec VPN with strongSwan and VTI on Linux: Secure Cloud-to-On-Premises Connectivity

Automate Kubernetes Troubleshooting with K8sGPT and Local Ollama

Mastering Outlines in Python: Guaranteed Structured LLM Output with Regex and CFGs

Mastering Cursor Rules and Context Mentions: Standardize Architecture Across Your Dev Team

Deploying HashiCorp Vault on Kubernetes: Dynamic Secrets and Sidecar Injector Guide

Deploying WPA3-Enterprise with FreeRADIUS and EAP-TLS: Mutual PKI Authentication Guide

Self-Hosting a STUN/TURN Server with coturn on Linux: Solving NAT Traversal for WebRTC and VoIP

How to Install and Configure MikroTik CHR on Proxmox VE for Your Network Lab

Deploying Apache Guacamole as a Bastion Host on Docker: Secure Web-Based SSH and RDP with 2FA

Mastering Systemd Timers: The Modern Cron Alternative for Linux Task Scheduling

High-Performance Asynchronous Programming in Rust with Tokio: Taming Tasks, Channels, and Concurrency Under Load

Self-Host a ZeroTier Network Controller with ZTNET on Linux: Build a Private P2P SD-WAN

Mastering Python AsyncIO: Deep Dive into Event Loops, Tasks, and Semaphores for High-Performance Code

Modern C++20 Concepts and Ranges: Safe Generic Code Under Fire

High Availability with Keepalived on Linux: Virtual IP and Automated Failover