@dennypage said in Is it possible to prevent installed packages (e.g. ntopng) from accessing the Internet?:
@wolffire said in Is it possible to prevent installed packages (e.g. ntopng) from accessing the Internet?:
I really like ntopng, but I'd rather it not be able to access the internet whenever it wants.
Is it possible to block package processes from doing so?
You can't block individual packages. The closest you could get is to find the domain or addresses the package is accessing and block those.
With specific regard to ntopng, I haven't examined all the callouts but I don't recall it doing much unless you were using the licensed version (activation check), or had one of ntopng's "active" modes enabled.
Make sure you have Active Network Discovery disabled in ntopng. It's in Settings / Preferences / Network Discovery / Active Network Discovery. This option should never be enabled on pfSense. Ditto for Active Monitoring.
Thanks for the quick answer.
I'm a little surprised about not being able to lockdown individual processes for those 'who watches the watcher?' types of situations. Finding a dynamic workaround will be painful.
As far as ntopng, I just don't want it to be able do anything online unless I've configured it to do so; I loath the idea of telemetry being sent off to various companies.
Not that I've found anything (I haven't taken a serious look yet); I'm just a bit weary.
Speaking of the settings, after reading that post about inadvertently scanning the Internet, I definitely ensured active monitoring and network discovery was turned off. 😆
