Application layer firewall
- Application layer firewall
In computer networking, an application layer firewall is a firewall operating at the application layer of a protocol stack. [ [http://www.f5.com/glossary/application-layer-firewall.html Application Layer Firewall | Web Glossary | F5 Networks ] ] Generally it is a host using various forms of proxy servers to proxy traffic instead of routing it. As it works on the application layer, it may inspect the contents of the traffic, blocking what the firewall administrator views as inappropriate content, such as certain websites, viruses, attempts to exploit known logical flaws in client software, and so forth.
An application layer firewall does not route traffic on the network layer. All traffic stops at the firewall which may initiate its own connections if the traffic satisfies the rules.
See also
*Computer security
*Firewall
*Imperva
*Kerio WinRoute Firewall
*SafeSquid
External links
* [http://www.owasp.org/index.php/Web_Application_Firewall Web Application Firewall] , Open Web Application Security Project
* [http://www.webappsec.org/projects/wafec/ Web Application Firewall Evaluation Criteria] , from the [http://www.webappsec.org Web Application Security Consortium]
References
Wikimedia Foundation.
2010.
Look at other dictionaries:
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