Servlet filters as security for web aplication <p>I want to do my own custom registration system like we have on most of web sites:</p> <ol> <li>User put password username e-male and so on </li> <li>After registration process tries to log in with inserted user name and passwords from registration form.</li> </ol> <p>I was considering to do this with spring-security, but I want to do this with servlets because it's essential things to know for each web developer.</p> <p>As my particular view I was thinking to use filters. Would you suggest something for me to read about filters and also how to perform security with servlets and filters?? </p> <p>Thank you with best regards. </p>