I have a Ubiquiti Ethenret and WiFi network and their software will give me the discovery capabilities, and my custom OpenBSD router gives me the traffic inspection features (using Darkstat). Source: over 2 years ago

A friend of mine is a tech wizard, and he hooked me up with a home built router that uses pfSense, which comes with a program that does what you're asking for - darkstat. Source: about 3 years ago

I do have darkstat monitoring traffic on my egress interface. I also block access to UDP port 53 from untrusted hosts (I will change it to silently redirect to my official unbound DNS servers later). Source: over 3 years ago

Bandwhich: A terminal bandwidth utilization tool. This CLI utility displays current network utilization by process, connection and remote IP/hostname. - Source: dev.to / over 1 year ago

You can use a tool like https://github.com/imsnif/bandwhich while playing to see if something is running in the background like apt, fwupd, etc. See if something on your system is eating network resources while playing. If you see nothing you're welcome to message me and I can give you a couple of other things to try. Source: about 2 years ago

I think nethogs might do this if I'm looking at the screenshot properly. Bandwhich appears to show what's being connected to on a per-process basis. Source: about 3 years ago

Since there weren't any pre-existing tools which meant my needs, I thought it would be a good opportunity to learning about TUIs (terminal user interfaces) to make one myself. I decided to use Rust with tui-rs, after being inspired by tools built with it such as gitui, bandwhich, and diskonaut. - Source: dev.to / over 3 years ago