okay this is super fucking excellent:

https://obdev.at/products/littlesnitch-linux/index.html

thank you @cR0w for letting me know it exists.

little snitch is fucking awesome. its the de-facto host-level firewall for macs these days and its impressively effective.

to have this for linux?

game changer.

Little Snitch for Linux

Discover powerful applications such as Little Snitch Mini, Little Snitch, LaunchBar and Micro Snitch.

Objective Development
@Viss @cR0w Didn't know it was available for Linux. I'll try it out on one of my linux test machines, never felt like trying it on my Macs, didn't have a spare one to test things with.
@CliffsEsport @cR0w i used it on every mac. it was amazing. super helpful to figure out what bullshit is phoning home to where. gives you popups when shit tries to reverse shell etc