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Term:
Domain Name Server   DNS

Definition:

DNS basic functions provide: - A way to identify computers like phone numbers. - Servers called Proxy Servers change web site URL-Uniform Resource Locator words and names such as www.techtionary.com to IP-Internet Protocol addresses such as www.helpme.com to 132.22.19.0 (32-bits or 4-bytes). - IP-Addresses are Hierarchical - like telephone area codes. Proxy (local) Servers look at first byte (X.0.0.0 or 132.0.0.0), then next byte (0.X.0.0 or 132.99.0.0), etc. - Unique names - like telephone numbers - no two public domains names or IP addresses are alike. Note that all IP addresses can be used internally as needed. This function is called NAT-Network Address Translation changing private (aka-also known as - internal-illegal addresses) IP addresses to public (aka - external-legal-global addresses) IP addresses. - Your name (domain name or URL) can be moved to different IP addresses on different ISP-Internet Service Provider networks.



Reference to:
Apptix Named #2 in its Category on Software Magazine's 27th Annual Software 500
11/20/2009

Frontier Communications Offers Tips for Reducing PBX Phone Fraud
11/19/2009

Identify Applications on the Network Using NBAR via Flexible NetFlow with Scrutinizer
11/19/2009

WATCHGUARD TECHNOLOGIES: WatchGuard Expands Into Messaging and Content Security
11/18/2009

Apptix Chief Financial Officer Named Finalist for Washington Business Journal's 3rd Annual CFO of the Year Award
11/18/2009




Source:

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