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Types of Firewalls to Protect a Business Network - Chron
Four basic types of firewall protection exist--network level, circuit level, application-level and stateful multilayer. Each type has advantages and disadvantages, ranging from ease of implementation.
http://smallbusiness.chron.com/types-firewalls-protect-business-network-2246.html
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Types Of Firewall In Network Security - Palo Alto
Network security has gone through quite a few iterations to get to where it is now. Below is a brief evolution of the different types and why we are at the top of the chain.
http://www.paloaltonetworks.com/index.html
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Getting a Close Look at Firewalls - Dummies
As network traffic passes through the firewall, the firewall decides which traffic to forward and which traffic not to forward, based on rules that you have defined.
http://www.dummies.com/how-to/content/getting-a-close-look-at-firewalls.html
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The History of the Next-Generation Firewall - Computer Weekly
Security expert Rik Ferguson explains how next-generation firewalls were developed and what protection they provide businesses.
http://www.computerweekly.com/news/2240159432/The-history-of-the-Next-Generation-Firewall
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Firewall Security Guide, History and Applications - Vera Code
Understand firewall security and how they integrate with application security considerations.
http://www.veracode.com/security/firewall-security
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History of the Firewall - Zeraya
History of the Firewall from Zeraya.
http://zeraya.com/history-of-the-firewall
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How Firewalls Work - How Stuff Works
Firewalls have helped protect computers in large companies for years. Now, they're a critical component of home networks, as well. See how firewalls work.
http://computer.howstuffworks.com/firewall.htm
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What is Firewall? - Webopedia
Firewall systems prevent unauthorized access to or from a private network. Firewalls can be implemented in both hardware and software, or a combination of both.
http://www.webopedia.com/TERM/F/firewall.html
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What is Firewall? - What Is
A firewall is a set of related programs, located at a network gateway server, that protects the resources of a private network from users from other networks.
http://searchsecurity.techtarget.com/definition/firewall
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Firewall (Computing) - Wikipedia
In computing, a firewall is a network security system that monitors and controls the incoming and outgoing network traffic based on predetermined security rules.
https://en.wikipedia.org/wiki/Firewall_(computing)
