Changes

==Public IP address==

==Public IP address==

'''Public IP address''' (''External'') is assigned to every device that connects to the Internet where each IP is unique. In this case, there cannot exist two device with the same public IP address all over the Internet. This addressing scheme makes it possible for the devices to “find each other” online and exchange information. User has no control over the IP address (public) that is assigned to the device. The public IP address is assigned to the device by the Internet Service Provider as soon as the device is connected to the Internet.

A '''Public IP address''' (''External'') is assigned to every device that connects to the Internet and each IP address is unique. Therefore, there cannot exist two device with the same public IP address. This addressing scheme makes it possible for the devices to “find each other” online and exchange information. A user has no control over the IP address (public) that is assigned to the device. The public IP address is assigned to the device by the Internet Service Provider as soon as the device is connected to the Internet.

A public IP address can be '''static''', '''dynamic''' or '''shared'''.

A public IP address can be '''static''', '''dynamic''' or '''shared'''.

'''Public static''' - some times called '''Dedicated''' means the IP address never changes.

'''Public static''' - some times called '''Dedicated''' means the IP address never changes.

'''Public dynamic''' - means the IP address change from time-to-time.

'''Public dynamic''' - means the IP address can change from time-to-time (typically when you lose connection and re-connect).

'''Public shared''' - in some cases, an ISP assign a public IP address to a group of users, and then employ NAT to isolate their traffic.

'''Public shared''' - in some cases, an ISP can assign a public IP address to a group of users, and then employ NAT to isolate their traffic.

==Private IP address==

==Private IP address==

'''Private IP address''' (''Internal'') means the IP address can only be used by those on the same network.

'''Private IP address''' (''Internal'') is only used by devices communicating to each other on the same network.

Devices with private IP addresses cannot connect directly to the Internet. Likewise, computers or other devices outside the local network cannot connect directly to a device with a private IP.  

Devices with private IP addresses cannot connect directly to the Internet. Likewise, computers or other devices outside the local network cannot connect directly to a device with a private IP.