A network firewall prevents unlawful network access to your website. However, most website attacks are perpetrated via ports that must be kept open to allow legitimate HTTP, HTTPS and FTP traffic. This is where an application firewall is important because it inspects all the traffic and separates legitimate traffic from attack attempts against your website.
Companies as Incapsula.com provides every web application, regardless of its size, with enterprise-grade Web Application Firewall, ensuring that the website's web application is safe and available.
A web application firewall helps protect a website from illegitimate traffic
The easiest way available today to prevent DDoS attacks on your website is to use a WAF (web application firewall) which screens the traffic to your website. For small to medium websites it's easiest to use a cloud-based web application firewall services as Incapsula.com
The easiest way available today for businesses to prevent DDoS attacks on is to use a WAF (web application firewall) which screens the traffic to your website. For small to medium business websites it's easiest to use a cloud-based web application firewall services as Incapsula.com
a) How is an application-layer gateway (ALG) different from a firewall?
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An application firewall protects an application for being penetrated by unwanted software. This unwanted software could be malicious and could do damage to one's computer.
Windows Internet Explorer is a Web Browsing tool and it is the only application on your computer that can connect you to the Internet, unless you have another Web Browsing application like Netscape or Mozilla Firefox. Also when you disable your firewall you are risking the possibility that Internet Criminals can access your computer.
The default Windows Firewall also monitors the Application layer
what a vulnerability of web based application
Ports are only "enabled" if an application is listening on them. Unless you are running a web server on the computer, the port is not "enabled."
Firewall appliances are stand-alone, self contained combinations of computing hardware and software. A commercial grade firewall system consists of application software that is configured for the firewall application and run on a general-purpose computer.
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The function of the web-based application is to implement webmail, online retail sales, discussion boards, wikis, and the online auctions. The web application can be described as an application that is accessed via a web.