We use IPv4 addresses for now, so there are only 4 billion unique combinations. The number of people on Earth and their devices far exceeds this number. To access the internet, you need a UNIQUE global IP address. To resolve this, providers use NAT which allows multiple local IP addresses to share a single global IP address.
For example, an entire street or larger area may have only one unique global IP address, but every device on that street has a local IP address that is mapped through NAT to the global IP address. Even if someone knows your global IP address (which is the only one has sense, as local IP addresses are heavily duplicated and not routable on the internet), they can’t locate you directly. Only the provider can and that’s not that easy and sometimes impossible if they only know global IP adress
2 Comments
We use IPv4 addresses for now, so there are only 4 billion unique combinations. The number of people on Earth and their devices far exceeds this number. To access the internet, you need a UNIQUE global IP address. To resolve this, providers use NAT which allows multiple local IP addresses to share a single global IP address.
For example, an entire street or larger area may have only one unique global IP address, but every device on that street has a local IP address that is mapped through NAT to the global IP address. Even if someone knows your global IP address (which is the only one has sense, as local IP addresses are heavily duplicated and not routable on the internet), they can’t locate you directly. Only the provider can and that’s not that easy and sometimes impossible if they only know global IP adress
Oh no, now they know I’m in there pants