Hardening your Pinebook Pro software

[Arwen]

...
Disable Samba services, (if you are not using them);

Disable services:
systemctl stop smbd
systemctl disable smbd
systemctl stop nmbd
systemctl disable nmbd

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Disable  Avahi, (zeroconf & service discovery);

Disable service:
systemctl stop avahi-daemon.service
systemctl stop avahi.daemon. socket
systemctl stop dbus-org.freedesktop.Avahi.service
systemctl disable avahi-daemon.service
systemctl disable avahi.daemon. socket
systemctl disable dbus-org.freedesktop.Avahi.service
...

Tip: You can stop and disable the services with a single command:

systemctl disable <service> --now

HTH!

Thanks, I had not got that far in the "systemctl" manual page.