mptcpize

I just heard about mptcp, and it looks interesting. From what I understand (from its Wikipedia page ) it uses multiple links, correct? If so, which ones did you use? Wifi and Ethernet?

Looks very interesting, I should recommend someone I know to try on their steamdeck (when connected to the dock) to speed up Steam downloads.

KDE actually has a plugin that does just that, I use it currently to rotate a fantasy illustration as my wallpaper every hour from that site.

You should try gufw. Great for simple setups! For more complicated ones you could use opensnitch.