firewall

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fire·wall

(fīr'wawl)
1. A special building material that is placed in walls between buildings or rooms to prevent the spread of fire.
2. A software program designed to prevent unauthorized persons from accessing a computer system.

firewall

A set of programs that protects the resources of a private computer network from users of other networks. It screens the messages that attempt to enter or leave the network and permits or denies access to outside users based on pre-programmed rules.
References in periodicals archive ?
It performs NAT (basic, enhanced, service, reverse and 40+ Application Level Gateways), enabling users to connect multiple computers to the Internet and provides port forwarding to run servers (Web server, mail server etc.
iChipSec can act as a router among LAN, WiFi and modem platforms, as it includes a NAT (Network Address Translation) and port forwarding functionality.
Advanced features include TCP/UDP, DHCP support, NAT, port forwarding, GRE protocol tunneling and access control lists.
Using IPv6, a gamer behind a NAT can start his or her own server without going through the process of configuring port forwarding on the NAT device.
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