All my hardware devices are physically secure. They access the internet via this same or similar Bell Canada home device known as the "Home Hub 2000" via a WiFi network with encryption and a hard-to-guess password. Exactly two people know the hard-to-guess WiFi password and they are trusted and that number is not likely to grow. I also connect to that WiFi network via a wireless network bridge, specifically this one, which I connected via ethernet to a grid which is comprised of this switch to which I connected some Ubuntu computers that have an ethernet interface but no other. I have not enabled the software firewall in the individual computers that comprise the grid.
The Home Hub settings:
- UPnP (Universal Plug and Play) is
- DLNA is
on. DLNA is described as being a means of sharing USB drive data but there are no USB drives connected to the Home Hub device.
- DMZ is
- DDNS (Dynamic DNS) is
- Port forwarding has
I will soon add
openssh-server the Ubuntu computers. The purpose is to deploy and run software on the grid. I will use
rsync (in ssh mode) not because I know of a security risk but just because
ssh is the "normal" way to get work done. If my user password is short and easy-to-type will it matter much in the context that I have described? Essentially I'm not sure if there are risks I need to be aware of, apart from the WiFi password, WiFi encryption, port forwarding, and physical security, hence this question.
Edit: I've decided to turn off UPnP and DLNA since I don't use them and they might be risks.