NetBIOS, NetBEUI, and SMB are Microsoft Protocols used to support Microsoft Networking. The NetBIOS stack includes SMB, NetBIOS, and NetBEUI.

NetBEUI stands for NetBIOS Extended User Interface (NetBEUI) NetBEUI is a separate protocol from NetBIOS. It supports small to medium networks providing transport and network layer support. It is fast and small and works well for the DOS operating system but NetBEUI is not a routable protocol. The page called NetBEUI provides more information about NetBEUI and name resolution.