A subnet mask, or netmask, is the part of an IP address that is used to determine if two addresses are on the same subnet by allowing any network enabled device, such as a FortiGate, to separate the network address and the host address. This lets the device determine if the traffic needs to be sent through a gateway to an external network or if it is being sent to host on the local network.
Technical Writer at Fortinet
Bruce has been working with computers, and related technology, since before the World Wide Web was a thing. He has worked in system and network administration. He has even dabbled in technical support. He has made the switch to technical writing as part of his deep, dark and dastardly plan to make the arcane machinations of IT technology more easily understood by the poor folks who use it. That, and the voices in his head told him it was good idea. Never argue with the voices in your head. People will start to stare.