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 ?
Nat Walker, and top right, his mum and dad Sally and Neil, centre, at Escape Boutique in Whitley Bay with owners Carl and Lisa Micthell
Although Nat had been ill for several years, his death came as a shock to friends and family.
Given the impact that NAT can have in lowering the risk of TTIs, many countries employ NAT testing as a complement to traditional serology testing, performing both to fully optimize the safety of their blood supplies.
The achievement is all the greater when once considers that Nat is not a caterer by profession.
So when you see Nat having a spot of lunch these days, there's a fair chance it will have spinach or cauliflower.
2000], whereas COL presented lower training level and experience than NAT.
Roseman, executive vice president, and Kenneth Hochhauser, managing director at Newmark Knight Frank Retail, represented the landlord, Elk Investors, while William Cohen, executive vice president at Newmark Knight Frank, represented Nat Sherman.
As they are packing their belongings, Nat discovers his father's old army rifle in the basement.
Nat, six, whose real name is Supatra, has Ambras syndrome, or congenital hypertrichosis.
While working for the couple as a nanny, Hope meets a young lesbian named Nat and confusion sets in.
But I hear Nat, 23, has already been seeking comfort with her 26-year-old ex-fiance Fran.