| 释义 |
firewall, n.
Brit. |ˈfʌɪəwɔːl|, U.S. |ˈfaɪ(ə)rˌwɔl|, |ˈfaɪ(ə)rˌwɑl|
[‹ fire n. + wall n.1]
1. orig. U.S. A wall or partition designed to inhibit or prevent the spread of fire.
1799tr. G. E. Lessing School for Honor i. ii. 4 Shark. Have I not prepared him another apartment? Trim. Yes, behind the pigeon-loft; with the prospect between the neighbours' fire-walls. 1851C. Cist Sketches & Statistics Cincinnati 230 Three smoke-houses..are separated by twelve inch walls..with fire-walls on the roof. 1895Overland Monthly Oct. 475/1 The brick work contract..included the brick walls from the concrete and iron lintels to the capping of the firewall above the roof. 1947Aircraft Engin. Jan. 15/1 The firewall is a stout bulkhead. 1997Bangkok Post 26 Feb. i. 3/1 A clause will be included in the regulations to require owners to install safety systems, such as fire walls, sprinklers and smoke detectors.
2.
a. Computing. A piece of hardware or software which performs a screening process on communications from networks external to an organization, with the aim of blocking unauthorized access while permitting outgoing communication.
1974Communications ACM 17 389 The mechanisms should not depend on the ignorance of potential attackers, but rather on possession of specific, more easily protected, protection keys or passwords... If one has a mechanism available which can provide ‘firewalls’, the principle of least privilege provides a rationale for where to install the firewalls. 1983D. Bischoff War Games xii. 206 Shit. Can we invade the deep logic? We keep hitting a damn fire wall. 1989H. W. Braun Request for Comments (Network Working Group) (Electronic text) No. 1093. 2, egp is selected as the routing interface of choice between the nsfnet backbone and its regional attachments due to its..ability to utilize autonomous system designators and to allow for effective firewalls between systems. 1995New Scientist 4 Feb. 4/2 A computer with a firewall recognises trusted computers by means of an electronic ‘handshake’. 2001Network World (Nexis) 22 Jan. 39 An important advantage of host-resident firewalls is that they filter internetwork traffic regardless of its origin.
b. More generally: any structure, device, or procedure designed to protect the security or integrity of a system, process, etc.; (also occas.) a person whose role is to provide such protection; a measure taken to prevent something undesirable, a safeguard. Cf. Chinese wall n. (b) at Chinese adj. and n. Compounds 3.
1981N.Y. Times (Nexis) 13 Apr. d1/1 Many brokerage houses are expected to separate their commodity divisions with a liability ‘fire wall’, a form of insurance against a major market default. 1993Newsday (Electronic ed.) 14 May There is time to prevent such a catastrophe [sc. a continent-wide war], but only if the United States acts now by erecting a military and diplomatic ‘fire wall’ in Macedonia. 1997New Yorker 17 Nov. 45/1 Editors and reporters are confident that Michael Parks is their ‘fire wall’. 2001Los Angeles Times 31 Jan. b9 (headline) Establish durable firewalls against religious coercion. |