What is the DMZ in networking? Is it all about having Firewall to isolate servers, data, or users from the outside boundary of the network?
DMZ is a Demilitarized Zone.
This is usually a subnet which bypasses the firewall, and allows direct connection to the internet. This is used when outside applications need to access a server, or another device inside an intranet.
The purpos of this is so that in the event of a security breech, an attacker can only access devices in the DMZ, and nothing else on the same intranet.