Introduction The infrastructure-as-code landscape experienced a seismic shift in 2023 when HashiCorp changed Terraform’s licensing from Mozilla Public License 2.0 to Business Source License 1.1. This prompted the Linux Foundation to create OpenTofu, a truly open-source fork that maintains full…
Introduction While Tailscale offers excellent mesh networking capabilities, many organizations prefer self-hosting their control plane for enhanced privacy, compliance, or cost considerations. Headscale is an open-source implementation of Tailscale’s coordination server that provides the same mesh networking functionality while giving…
Introduction Deploying a production-ready Kubernetes cluster can be complex and resource-intensive. K3s, the lightweight Kubernetes distribution by Rancher, solves this challenge by providing a fully compliant Kubernetes experience with minimal resource requirements and simplified deployment. In this comprehensive guide, we’ll…
Introduction As quantum computing advances, traditional cryptographic algorithms face potential vulnerabilities. Post-quantum cryptography (PQC) provides a proactive defense against future quantum attacks on TLS connections. The X25519+Kyber hybrid key exchange combines the proven security of classical elliptic curve cryptography with…
Introduction Running services on an IPv6-only VPS offers significant advantages including reduced costs, improved performance, and future-proofing your infrastructure. However, exposing these services to the broader internet—where many users still rely on IPv4—presents a unique challenge. This tutorial demonstrates how…
Modern web applications face increasingly sophisticated threats, from brute-force attacks to DDoS attempts. Traditional security tools often work in isolation, but CrowdSec revolutionizes threat detection by combining behavioral analysis with community intelligence. Unlike static solutions, CrowdSec creates a collaborative defense…
Traditional SSH authentication methods like passwords and even SSH keys are increasingly vulnerable to sophisticated attacks. Hardware security keys using FIDO2 protocols offer a revolutionary approach to secure server access, combining something you have (the physical key) with something you…
Data loss can be catastrophic for any server environment. Whether you’re running critical applications or storing important data on your VPS, having a reliable backup strategy is non-negotiable. Restic offers an elegant solution with its encrypted, deduplicated backups that work…
Introduction Network congestion control algorithms play a crucial role in optimizing internet performance, especially for VPS hosting and cloud infrastructure. BBR (Bottleneck Bandwidth and Round-trip propagation time) is Google’s revolutionary congestion control algorithm that has transformed how TCP connections handle…
Introduction As IPv4 address exhaustion continues to drive innovation in networking, many organizations are transitioning to IPv6-only infrastructure. However, the internet still heavily relies on IPv4 services, creating a challenge for IPv6-only deployments. This tutorial addresses the problem of enabling…
