2 posts tagged with "Networking"

Your firewall says Default: deny (incoming). Your database is answering the internet anyway. This part shows the port scan that proves it on a real server, explains the iptables chain order that causes it, and fixes it with a Compose override file — not by fighting the firewall.

We will connect our Linux Ubuntu Server to WiFi using the inbuilt WiFi adapters available on the system. In my case, I have an old Dell laptop running Ubuntu Server 24.04, which has a built-in WiFi adapter. This guide will help you set up the connection step-by-step.