internet

network of devices connected to each other

https://www.youtube.com/watch?v=AEaKrq3SpW8&t=161s

osi model

https://www.youtube.com/watch?v=0y6FtKsg6J4

ip internet protocol

data travels as packets on the internet

each packet of information on the internet contains header + data

the header contains IP address, but not port

ipaddress

given any network of devices, an IP address is how you uniquely recognize that device 192.168.0.1

port

8080, a virtual mapping within the OS of a computer, to know which application the OS has to route the packet to

udp

simplest protocol. adds a UDP header to the data which contains a port number

can comms before connection established