I've heard the question asked a lot in windows/networking forums, for an internet sharing application under windows to do banddith throttling for certain clients, the only one I've seen is Sygate's ...

Little Snitch is finally on Linux. Learn how to use this eBPF firewall to monitor outbound traffic, block telemetry, and see ...

Also, apparently many Linux distros install a lot of extra "fluff" porgrams, some of which can add vulnerabilities to a firewall as well. Most router distros are stripped down and only use time-tested ...