Re:Apple's apps bypass firewalls like LittleSnitch and LuLu ...
by mindfulhack on Wednesday October 21, 2020 @02:47AM
(#24845343)
But has it added pop-up per-app (and then per domain/port/ip) block/allow functionality in the Linux DE GUI yet? Thanks to your whole team for the awesome work.
Portmaster by Safing https://safing.io/portmaster/
Not only is it an application firewall, but also gives you DNS filtering (ie. Pi-Hole basics) and DNS-over-TLS.
Full Disclosure: I'm one of the founders.