you can actually use lulu itself to block sentry for all of their tools (this is what i do). i found that the only other connections they'll make is for updates

you can actually use lulu itself to block sentry for all of their tools (this is what i do). i found that the only other connections they'll make is for updates--both software and rulesets (if you have that configured). lulu is not nearly as polished as hands off! (may it rest in peace) or little snitch, but it gets the job done. i also have some rules in pf (via murus gui) to block things like google and facebook on a system-wide level.