hub switch router modems

                                               Routers, Switches, Packets and Frames

                    

Modem vs Router - What's the difference?

Hub, Switch, & Router Explained - What's the difference?

Hub Switches are used to create networks

Routers are used to connect networks

Port Forwarding Explained
IP address along with port number, Router looks at IP address and forwards packet.
Ports range from 0-65535
priveleged ports range from 0-1023