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I am a student at LSU

I found an interesting page on Wikipedia about my iPhone. Now this is my favorite website! We are linking to LSU's website LSU's Webpage

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What does the Application Layer do?

The Application Layer controls the network services, APIs, utilities, and operating system environments. The application layer makes it possible to communicate with the lower layers. Some of the things it focuses on name resolution and redirector services. Name resolutions are when the IP address is being mapped to the user in a readable manner. Redirector Services, which is also sometimes called the "requester", it looks at the user's requests and if it is something that can be fulfilled locally, it is done so. If the request cannot be fulfilled on the local level the redirection to another computer is required. The request are then directed to another machine. This will then allow the user to access the network as if it were apart of the local system. HTTP is a well known protocol that is apart of the application layer.



Application Firewall

The application firewall's goal is to enhance the overall security of the application layer to prevent it from dangerous exposures which are likely to cause severe damage. The application firewall has two ways of functioning. It is either passive or active. When the firewall is active, it's duties is to active inspect all request, which also includes inspecting the actual message being interchanged. Only the messages that are considered to be safe are passed on to the application. When the mode is passive, they inspect all incoming requests against all known threats. Passive firewalls do not actively reject any potential threat even if they are discovered. The application firewall is fairly is to update which keeps them prepared to fight of new threats.

http://learn-networking.com/tcp-ip/how-the-application-layer-works http://en.kioskea.net/contents/internet/tcpip.php3 http://www.f5.com/glossary/application-layer-firewall.html

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