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 ?
Fast, easier access: Transparent bastion host and user mapping capabilities enable fast access to system and application accounts in the cloud for administration and management purposes, without additional authentication steps -- while enforcing full session recording and accountability for privileged users.
Genuity also provides complementary protection against unforeseen hardware failures of critical components by installing RAID-1 disk mirroring technology and dual power supplies for each of the bastion hosts in the High Availability packages.