An Application Firewall acts as a security barrier between the operating system, mainframe or any other computer and the tasks is performs. They are not to be confused with normal firewalls because firewalls function by analyzing and processing data that the computer is processing itself. It has predefined protocols according to which data is either denied or allowed to execute on the machine. On the other hand, Application Firewall performs all the functions as mentioned with the added utility of controlling all the activities that the computer is executing. It also has a grip on the data applications are accessing and giving as output.
Application Firewall is rather complex because its protocols rely on manual configuration. This requires the user to specify commands and actions that the firewall will take for each and every scenario. This is necessary to ensure that the firewall works perfectly. It is important that the user has understanding of how Application Firewalls function and should know to set data from ports and specify what to do with entering and exiting data. This feature actually comes to the advantage of user in the long run because once it has been learned how to handle the Application Firewall, it can be set exactly as you like and it becomes a versatile tool.
Application Firewall has built in protocols which do not allow DLL (Dynamic Link Libraries) to function in case their code seems sketchy and they do not correspond to normal codes, which shows that they have been tampered with and are not secure, so should not be allowed to function and execute on the machine.
Application Firewalls are excellent programs to implement onto system. They work perfectly on the machine and in sync with other programs once the manual settings have been set. Their strict security setting make sure that no malicious software gets through and data remains secure from all forms of cyber attacks. Although some malicious softwares may get through normal firewalls, they still require permission from system to perform whatever there is in their code and infect computer. Application Firewall denies any such malicious attacks by disallowing execution requests and either removes or quarantines such applications. It achieves this by cross referencing the content with normal content that such files should have. If they don’t match, the program is stopped.
Web Application Firewall function quite the same way in almost all aspect but for the fact that their work is broadened or in some cases limited to web based programs. Web Application Firewall have the primary function of analyzing performance of web based applications and making sure that they remain unaffected and their security remains intact.
Web Application Firewall processes HTML, HTTPS, XML-RPC and SAP data being sent to and from machine and can dead stop session hijacks, SQL Injection, buffer overflowing and XSS cyber attacks. Anything out of ordinary data traffic causes the Web Application Firewall to become alert and deal with the program accordingly.