If it is necessary to publish some information to the network, it should not be joined
by any extraneous information, or by information supplied by a non-trusted source
on the system.
Prevent user applications from using Avahi to publish services by adding or
correcting the following line in the [publish] section:
disable-user-service-publishing=yes
Implement as many of the following lines as possible, to restrict the information
published by Avahi.
publish-addresses=no
publish-hinfo=no
publish-workstation=no
publish-domain=no
Inspect the files in the directory /etc/avahi/services/. Unless there
is an operational need to publish information about each of these services,
delete the corresponding file.