I read you mentioned firefox. I had a similar experience a while ago, related to this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1704774#c13
I read you mentioned firefox. I had a similar experience a while ago, related to this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1704774#c13
You can install ufw and a frontend for it that lets you block specific processes. https://wiki.archlinux.org/title/Uncomplicated_Firewall#GUI_frontends It seems KDE already comes with a frontend in the system settings, and there's gufw for gnome/gtk.