In case you want to expose your Blocks server on a public network, such as one accessed over wifi by guests, or from the Internet, there are a number of precautions you must take. For instance, you should strongly consider using a secure connection (https) to your server. That applies in particular if your server is exposed to the internet. You should also make sure to have a proper firewall in place. Such a firewall is often part of the networking infrastructure. If you have no external firewall in place, you should at least apply a software firewall, such as ufw, which is installed but disabled in our Linux server image.

Whenever in doubt, consult with professional security experts before exposing your server to public networks or the internet.