Devices also have a subnet mask, which defines which part of the IP address belongs to the network and which part belongs to the device.

Is there an easy way (like via a .Net library) that allows me to get the IP address and subnet mask of the local machine that the application is running on?

Bits that are turned on in the subnet mask are what mark out a network address from the host address.<P>Examples:<BR>If you have an ip address of 192.168.1.10 with a subnet mask of 255.255.255.0 ...

The second part of a TCP/IP address that defines the subnetwork in which the device resides. The subnet ID number is shared with the host ID. See subnet mask and subnet mask tables.

Knowing the local (or private) and external (or public) IP addresses for your devices can help you keep your network running smoothly and safely.