Quote:
|
Originally Posted by Big Damo
Whats the go with the 10 and 172 IP adresses? I've only ever seen 192 on home networks. I seen the 10 ones on the school network though.
Any reason behind that? Just because in some networks there might be more than the 192 range?
|
Without getting too technical, they are reserved for private networks as opposed to the public network (ie, the internet).
On a 10 network you can have ~16.7million host addresses. (My Telstra mobile is connected to a 10.x network - it doesn't have a public IP address)
On the 172.16 - 172.31 network you can have ~1 million host addresses.
On a 192.168.0 - 255 network you can have ~65k host addresses. Most SOHO routers will be configured to a 192.168.x network by default)
(assuming you're using the standard class netmasks...)
There are 3 classes (ok, technically 5) and each of the above networks are in different classes, A, B and C respectively.
If you were to allocate a public IP address to every device that connects to the internet, we would have run out of addresses a long time ago. I can have upwards of 50 network devices on my network but none of them are directly connected to the internet and hence are not allocated a public IP address.