guillaume cornet [https://community.jboss.org/people/raoulpetitpied] commented on the document "Using JBoss Negotiation on AS7" To view all comments on this document, visit: https://community.jboss.org/docs/DOC-16876#comment-11199 -------------------------------------------------- In my case, the given 'host' security-domain configuration failed, generating a 'Mechanism level: Checksum failed' exception. I successfully use this configuration :     <security-domain name="host" cache-type="default">         <authentication>         <login-module code="Kerberos" flag="required">             <module-option name="storeKey" value="true"/>             <module-option name="useKeyTab" value="true"/>             <module-option name="principal" value="HTTP/{testserver}"/>             <module-option name="keyTab" value="/home/username/service.keytab"/>             <module-option name="doNotPrompt" value="true"/>             <module-option name="debug" value="false"/>         </login-module>         </authentication>     </security-domain> where {testserver} is the FQDN of the machine. --------------------------------------------------