(NAT, or Network Address Translator, Virtual LAN) A technique in which a router or firewall rewrites the source and/or destination Internet addresses in a packet as it passes through, typically to allow multiple hosts to connect to the Internet via a single external IP address. NAT keeps track of outbound connections and distributes incoming packets to the correct machine.
NAT is an alternative to adopting IPv6 (IPng). It allows the same IP addresses (10.x.x.x is the conventional range) to be used on many private local networks while requiring only one of the increasingly scarce public addresses to be allocated to each private network.
NAT does not however allow an external service to initiate a TCP connection to an internal host, nor does it support stateless protocols based on UDP well unless the router software has extensions to support each specific protocol.
- Network address translator
Network Address Translation
- Network administrator
job A person who manages a communications network within an organisation. Responsibilities include network security, installing new applications, distributing software upgrades, monitoring daily activity, enforcing licensing agreements, developing a storage management program and providing for routine backups. (2004-03-20)
noun 1. a mathematical method of analyzing complex problems, as in transportation or project scheduling, by representing the problem as a network of lines and nodes.
- Network appliance
noun any device designed to serve information to end users with greater speed, usu. plug-and-play devices that connect directly to networks without the need for a front-end server; a computer designed chiefly to provide Internet access Usage Note computing