firewall

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firewall

Computing a computer system that isolates another computer from the internet in order to prevent unauthorized access

firewall

[′fī‚wȯl]
(computer science)
Hardware and software programs that protect the resources of a private network from users in other networks, controlling all traffic according to a predefined access policy.

firewall

firewall
A noninflammable partition separating the whole or a portion of an engine nacelle from the rest of the aircraft to prevent the spread of fire. Each separated area is called a fire zone and often has its own fire detectors and extinguishers. When a firewall separates the entire engine from the rest of the aircraft, it is often called a fireproof bulkhead.

firewall

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firewall

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firewall

The primary method for keeping a computer secure from intruders. A firewall allows or blocks traffic into and out of a private network or the user's computer. Firewalls are widely used to give users secure access to the Internet as well as to separate a company's public Web server from its internal network. Firewalls are also used to keep internal network segments secure; for example, the accounting network might be vulnerable to snooping from within the enterprise.

In the home, a personal firewall typically comes with or is installed in the user's computer (see Windows Firewall). Personal firewalls may also detect outbound traffic to guard against spyware, which could be sending your surfing habits to a website. They alert you when software makes an outbound request for the first time (see spyware).

In the organization, a firewall can be a stand-alone machine (see firewall appliance) or software in a router or server. It can be as simple as a single router that filters out unwanted packets, or it may comprise a combination of routers and servers each performing some type of firewall processing. For more about the various firewall techniques, see firewall methods.


An Excellent Resource
O'Reilly's "Building Internet Firewalls, 2nd Edition" by Zwicky, Cooper and Chapman is one of the best books written on Internet and Web security. It covers a huge range of firewall and related topics and should be a "must have" for anyone interested in the subject. (O'Reilly & Associates, Inc., 2000, ISBN 1-56592-871-7)
References in periodicals archive ?
Risky or sensitive combination of permissions or objects are important concepts in access control, Chinese Wall policy and SSoD are discussed in different literatures [7][26][27] to present sensitive combination of permissions or objects.
345) Harry McVea, 'Heard It through the Grapevine: Chinese Walls and Former Client Confidentiality in Law Firms' (2000) 59 Cambridge Law Journal 370, 386-8; Mytton's Ltd v Phillips Fox (Unreported, Supreme Court of Victoria, Coldrey J, 23 September 1997) 3: 'This was not a case in which it was sought to employ the unsatisfactory construct of the "Chinese wall".
The law lords then examined the Chinese wall that KPMG put in place to protect Prince Jefri's interests.
There is no Chinese wall anymore" opined a Fortune magazine story (Nocera, June 9, 2002).
24) In the end, the appropriate result will typically depend on the particular facts of the case, including the size of the firm, the extent of conflicting interests between the clients, and the precise nature of any Chinese Wall.
Any Chinese wall or status quo strategy would be vain and dangerous", wrote Charles Fiterman in his report.
It is surrounded by a Chinese wall of rationalization, reinterpretation, and evasion.
A strikingly candid portrait of Ma and his company, told from the personal perspective of "an American fly on a Chinese wall," the film captures the successes and mistakes Ma's team encountered at a time when the Internet brought China face-to-face with the West.
We're setting up a sort of Chinese wall where commercial aspects don't mix with the editorial, so the clinicians know we're completely unbiased.
Dinkum Diamond bids to add to a successful week for Aussie Rules, also the sire of Wednesday's French Listed winner Chinese Wall, while Stone Of Folca is a son of Kodiac, whose three-parts brother, Invincible Spirit, is represented by Tattersalls Craven breeze-up graduate Fleeting Spirit.
Bachchan cannot put up a Chinese wall and say the white sands of the Rann of Kutch and the Gir lions are separate from Modi's pogrom in 2002," he said.
is currently at work on a tower in the Luajazui district of Shanghai, which is expected to become the Chinese Wall Street.

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