A traditional firewall is commonly employed to restrict Web site access to Ports 80 and 443, used for HTTP and Secure Sockets Layer communications, respectively. However, such a device does very little to deter attacks that come over these connections. URL query string manipulations including SQL injection, modification of cookie values, tampering of form field data, malformed requests and a variety of other nasty tricks are often given free passage on allowed, legitimate traffic. Making your Web Application secure is a important feature to implement. This article looks at some quick but important things you can do to improve your application security.