title: Jenkins - j_acegi_security_check
body: <p>I am trying to setup jenkins, but I cant get the authentication to work. I am running jenkins on Tomcat6 on CentOS 6.2. I enable logging in, and everything goes fine until I try to log in. After giving my credential and pressing login, tomcat gives me a error:
  <br><br>"HTTP Status 404 - The requested resource () is not available." on <a href="http://myserver:8080/jenkins/j_acegi_security_check">http://myserver:8080/jenkins/j_acegi_security_check</a></p>
  
  <p>By googling I can find this:
  <a href="https://issues.jenkins-ci.org/browse/JENKINS-3761">https://issues.jenkins-ci.org/browse/JENKINS-3761</a></p>
  
  <p>Two suggested fixes I have found:</p>
  
  <ul>
  <li>Run jenkins on tomcat instead of running the standalone version - I
  am already doing so.</li>
  <li>Edit a file:  WEB-INF/security/SecurityFilters.groovy - I tried to
  edit, but I can't get it to change anything</li>
  </ul>
  
  <p>Is there something I could do to make this work?</p>