• Gateway Modems: These provide the interface with the computers and other equipment. 
  
  
• DSL Connections The Gateway modem plugs into a wall socket.
  
  
• HFC Connections Your ISP supplies the access network (utility box and gateway modem).
                                        
• Fixed Wireless involves Outdoor Antenna, NBN connection box, and Wall Outlet. 
  
  
• Satellite Connections involves a satellite dish and a satellite network termination device. 
  
  
• NBN Connections involves a NBN utility box, NBN connection box, and a power supply. 
  
  
• Hard-wired/Wireless involves internal building wiring. 
  
  
• Power Line Adaptors involves usinga building's internal electrical wiring to connect computers. 
  
  

(source: Left & Centre –Wikimedia Commons; Right – NETGEAR)