Tutorials

Hands-on guides: NAT, Alpine, BBR and security hardening.

How to Use a NAT Server

NAT plans share one public IPv4 and only allow your assigned port range — this guide shows how to find your mapped ports and connect or map services correctly.

Getting started with Alpine Linux

A starter guide to Alpine Linux covering why it's great, the apk package manager, OpenRC services, timezone and user setup, plus the musl compatibility caveat.

How to Enable BBR Congestion Control

Check your kernel version and enable Google's BBR congestion control via sysctl to boost TCP throughput on lossy links on your WawaNode server.

Basic Server Security Hardening: SSH, Firewall and fail2ban

A practical walkthrough for hardening a Debian/Ubuntu server: change the SSH port, switch to key auth, disable root password login, enable a firewall, install fail2ban, and keep packages updated.

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