title: How to configure JBoss EAP 6.3 WebApp for Kerberos authentication
body: <p>I need to configure JBoss EAP 6.3 to understand Kerberos authentication. </p>
  
  <p>My environment consists of:</p>
  
  <ul>
  <li>linux server with JBoss EAP 6.3</li>
  <li>client station with Windows 7 64bit + Chrome</li>
  <li>Windows Server 2008 Active Directory (act as KDC)</li>
  </ul>
  
  <p>I have already tried lots of examples, but none of them work. Basically I did everything according this document:
  <a href="https://access.redhat.com/documentation/en-US/JBoss_Enterprise_Application_Platform/6.3/html/Security_Guide/chap-Authentication_and_Authorization.html" rel="nofollow">RedHat JBoss 6.3 Kerberos</a></p>
  
  <p>and this document:
  <a href="https://developer.jboss.org/blogs/radoslaw.rodak/2011/12/19/configure-spnego-on-as-7x" rel="nofollow">JBoss blog RadoslawRodak</a></p>
  
  <p>and this document:
  <a href="https://developer.jboss.org/thread/220959" rel="nofollow">JBoss developer blog</a></p>
  
  <p>And everything I get from testing servlet (jboss-negotiation-toolkit) is this message:
  WARN  [org.jboss.security.auth.spi.AbstractServerLoginModule] (http-/172.27.185.220:8080-1) Unsupported negotiation mechanism 'NTLM'</p>
  
  <p>Does anyone went all through this and solved it somehow? </p>
  
  <p>Thank you in advance, Josef</p>