A network operating system (NOS)
that controls a network
and its message
, controls access by multiple users to network resources such as files, and provides for certain administrative functions, including security
The upper 5 layers of the OSI Reference Model provide the foundation upon which many network operating systems are based.
Network operating system features may include:
- 6WINDGate, 6WIND software packages that turn Linux distributions into routers's control plane and data plane.
- Cisco IOS (formerly "Cisco Internetwork Operating System") is a NOS having a focus on the internetworking capabilities of network devices. It is used on Cisco Systems routers and some network switches.
- BSD, also used in many network servers.
Some device operating systems, including Mac OS X
and all versions of Microsoft Windows
since Windows 2000
, include NOS features. Some common network operating systems for DOS
and Windows systems have included Novell NetWare
, LAN Manager
, and Banyan Vines
. These operating systems are not themselves network operating systems. A NOS is an OS that has been specifically written to implement and maintain networks.