Changes

Fixme network is not firewalledneither is NATed. If you connect to ''FIXME'' or ''FIXME-5GHz'' WiFi networksnetwork, *you'll get a public IP address and your machine will be exposed to Internet*. If you connect to ''FIXME_NAT'', you won't have a public address, but it is however good practice to install a firewall. ''Remember that you are in a hackerspace, and that in hackerspaces there are hackers. Not protecting your machine is an invitation to the Lulz.''