One address, three devices — so how does your watch have one?
An IPv4 address is supposed to be unique and universal. Your home has one from the ISP, and three devices using it at once. Step through and watch where the rule bends.
Inside the home · and out on the Internet
Public addresses used
1
the one the ISP rents you
Devices served
0
nothing has sent anything yet
The translation table, in the router
— empty —
inside address:port ↔ outside port
bitsarebits.com · CSE 316 — Data Communication & Networking