If `Samba <https://www.samba.org/samba/docs/>`_ is installed and enabled as part of your IIAB's `/etc/iiab/local_vars.yml <https://wiki.iiab.io/go/FAQ#What_is_local_vars.yml_and_how_do_I_customize_it.3F>`_, your IIAB server can advertise a shared "public" folder, available to Windows PC's and laptops on your network.
Please review the default `/etc/samba/smb.conf <https://github.com/iiab/iiab/blob/master/roles/samba/templates/smb.conf.j2>`_ file, and revise it appropriately.
Please also review your overall `IIAB Security <http://wiki.laptop.org/go/IIAB/Security>`_.