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 ?
Our latest version of Spyware Blocker was designed to stop spyware at the point of attack -- before it gets onto a customer's machine," said Matt Cobb, EarthLink's vice president of core applications.
Once CWS is discovered by an anti-spyware application, such as EarthLink's Spyware Blocker, powered by Webroot, Internet users should take action to immobilize or erase the program from their PCs.
They'll also be able to use TotalAccess(R) 2004, which includes such features as EarthLink spamBlocker, Pop-Up Blocker(SM), Accelerator(TM) and Spyware Blocker -- tools that help keep online interruptions to a minimum.
EarthLink TotalAccess(R) software features spamBlocker, which blocks virtually 100 percent of junk email messages before they can reach a user's account; Virus Blocker, which scans all incoming emails and removes viruses; and Spyware Blocker, which keeps the online experience secure and private.