International Journal of Modern Engineering Research (IJMER)
Internet services and applications contain develop into an inextricable part of daily life and make possible communication between the management of personal information from anywhere. To put up this increase in application and data complexity, web services have moved to a multi-tiered design wherein the web server runs the application front-end logic and data is outsourced to a database or file server. Double Guard is an IDS system that models the network behavior of user sessions across both the front-end web server and the back-end database. By monitoring both web and succeeding database requests, the authors are able to search out attacks that an independent IDS would not be able to identify.