How to secure wifi connection at home with a modem brand “Billion”
I’d like to make sure that my home wifi is secure and that no one can have easy access to it. My modem and wifi connection in my house was set up by the technician when it was first installed. I heard that you can actually set up your own password on it. How should I do it? I have a modem with a brand name “Billion” in front of it. Complete name is Billion BiPAC 7800NXL ADSL2+/3G/4G wireless router. Can I use letters and numbers for my password?