These 6 Linux monitoring tools helped me uncover every problem on my network

Once your network stops being a single flat LAN with a few friendly devices on it, guessing becomes a very poor way to debug anything. Between VLANs, containers, DNS filtering, self-hosted services, NAS traffic, random IoT chatter, and a few machines that always seem to be doing something in the background, the problem is rarely as simple as “the internet is slow.”