A web application firewall (or WAF) separates, observe, and stop HTTP traffic to coming from a web application. A web application firewall is different one from a regular firewall.It able to separate the content of specific web applications while other regular firewalls serve as a safety gates to servers. Application firewalls which manage and controls input, output, and access from various applications or services.
Web Application Firewall is always used with combination of Server Load Balancer, Network Load Balancer (LB) and Network Load Balancing Solutions . Application Firewall attacks against web applications.A lot of research has taken place in web application security .Most WAF dealer only deliver black and white listing functions.There are two security models used in WAF’s . A negative security model, which merge a ‘blacklist’ of attacks patterns as its ruleset, and a positive security model, whose ruleset is referred as a ‘whitelist’. While a blacklist allows all requestcontinue reading