Re: [keycloak-user] Cannot get SPNEGO authentication working

Hello, I am trying to set up SPNEGO authentication through Keycloak. I have installed Keycloak on a windows server, configured a client as shown below and set up the realm in jboss. But I consistently receive the error message GSSException: Defective token detected (Mechanism level: GSSHeader did not find the right tag). I am using IE 11, and the url for the web app is https://gig-jboss-dev.ajga.com:8443/CBN [cid:image001.png@01D20DA5.5995CC40] JBoss web app configuration in standalone.xml ====================================================== <subsystem xmlns="urn:jboss:domain:keycloak:1.1"> <secure-deployment name="cbn-war-17.0.0.16-SNAPSHOT.war"> <realm>master</realm> <resource>CBN</resource> <public-client>true</public-client> <realm-public-key>(key from keycloak)</realm-public-key> <auth-server-url>http://gig-msnet-dev.ajga.com:8080/auth</auth-server-url> <ssl-required>EXTERNAL</ssl-required> </secure-deployment> </subsystem> Log file from keycloak server ======================================================== 2016-09-13 10:47:31,792 INFO [stdout] (default task-19) Debug is true storeKey true useTicketCache false useKeyTab true doNotPrompt true ticketCache is null isInitiator false KeyTab is c:\temp\keycloak.keytab refreshKrb5Config is false principal is HTTP/gig-msnet-dev.ajga.com(a)AJGA.COM tryFirstPass is false useFirstPass is false storePass is false clearPass is false 2016-09-13 10:47:31,792 INFO [stdout] (default task-19) principal is HTTP/gig-msnet-dev.ajga.com(a)AJGA.COM 2016-09-13 10:47:31,792 INFO [stdout] (default task-19) Will use keytab 2016-09-13 10:47:31,807 INFO [stdout] (default task-19) Commit Succeeded 2016-09-13 10:47:31,807 INFO [stdout] (default task-19) 2016-09-13 10:47:31,807 WARN [org.keycloak.federation.kerberos.impl.SPNEGOAuthenticator] (default task-19) SPNEGO login failed: java.security.PrivilegedActionException: GSSException: Defective token detected (Mechanism level: GSSHeader did not find the right tag) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.keycloak.federation.kerberos.impl.SPNEGOAuthenticator.authenticate(SPNEGOAuthenticator.java:70) at org.keycloak.federation.kerberos.KerberosFederationProvider.validCredentials(KerberosFederationProvider.java:209) at org.keycloak.models.UserFederationManager.validCredentials(UserFederationManager.java:549) at org.keycloak.authentication.authenticators.browser.SpnegoAuthenticator.authenticate(SpnegoAuthenticator.java:89) at org.keycloak.authentication.DefaultAuthenticationFlow.processFlow(DefaultAuthenticationFlow.java:183) at org.keycloak.authentication.AuthenticationProcessor.authenticateOnly(AuthenticationProcessor.java:792) at org.keycloak.authentication.AuthenticationProcessor.authenticate(AuthenticationProcessor.java:667) at org.keycloak.protocol.AuthorizationEndpointBase.handleBrowserAuthenticationRequest(AuthorizationEndpointBase.java:139) at org.keycloak.protocol.oidc.endpoints.AuthorizationEndpoint.buildAuthorizationCodeAuthorizationResponse(AuthorizationEndpoint.java:341) at org.keycloak.protocol.oidc.endpoints.AuthorizationEndpoint.build(AuthorizationEndpoint.java:160) at sun.reflect.GeneratedMethodAccessor360.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:139) at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:295) at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:249) at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:138) at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:107) at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:133) at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:101) at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:395) at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:202) at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:221) at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56) at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129) at org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:88) at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84) at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131) at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50) at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:285) at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:264) at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81) at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:175) at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202) at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:792) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: GSSException: Defective token detected (Mechanism level: GSSHeader did not find the right tag) at sun.security.jgss.GSSHeader.<init>(GSSHeader.java:97) at sun.security.jgss.GSSContextImpl.acceptSecContext(GSSContextImpl.java:306) at sun.security.jgss.GSSContextImpl.acceptSecContext(GSSContextImpl.java:285) at org.keycloak.federation.kerberos.impl.SPNEGOAuthenticator.establishContext(SPNEGOAuthenticator.java:174) at org.keycloak.federation.kerberos.impl.SPNEGOAuthenticator$AcceptSecContext.run(SPNEGOAuthenticator.java:137) at org.keycloak.federation.kerberos.impl.SPNEGOAuthenticator$AcceptSecContext.run(SPNEGOAuthenticator.java:127) ... 60 more 2016-09-13 10:47:31,839 INFO [stdout] (default task-19) [Krb5LoginModule]: Entering logout 2016-09-13 10:47:31,839 INFO [stdout] (default task-19) [Krb5LoginModule]: logged out Subject ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Confidentiality Notice: The information contained 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