Error "Unable to connect due to authentication failure" in EAP 7

Hi all,

Domain Controller...: 192.168.244.146
HC1...: 192.168.244.147

I'm trying to set up a test env of one Domain Controller and 2 Host Controllers using EAP7 ati Linux. The Domain Controller is up and running fine, but when i try to add a HC to this domain controller, i get the following error:

[...]
[Host Controller] 18:57:28,797 INFO [org.jboss.as.remoting] (MSC service thread 1-1) WFLYRMT0001: Listening on 192.168.244.147:9999
[Host Controller] 18:57:29,034 WARN [org.jboss.as.host.controller] (Controller Boot Thread) WFLYHC0001: Could not connect to remote domain controller remote://192.168.244.146:9999 -- java.lang.IllegalStateException: WFLYHC0043: Unable to connect due to authentication failure.
[Host Controller] 18:57:29,034 WARN [org.jboss.as.host.controller] (Controller Boot Thread) WFLYHC0147: No domain controller discovery options remain.
[Host Controller] 18:57:29,034 ERROR [org.jboss.as.host.controller] (Controller Boot Thread) WFLYHC0002: Could not connect to master. Aborting. Error was: java.lang.IllegalStateException: WFLYHC0120: Tried all domain controller discovery option(s) but unable to connect
[Host Controller] 18:57:29,120 INFO [org.jboss.as] (MSC service thread 1-4) WFLYSRV0050: JBoss EAP 7.0.0.GA (WildFly Core 2.1.2.Final-redhat-1) stopped in 79ms
[Host Controller]
18:57:29,481 INFO [org.jboss.as.process.Host Controller.status] (reaper for Host Controller) WFLYPC0011: Process 'Host Controller' finished with an exit status of 99
18:57:29,486 INFO [org.jboss.as.process] (Thread-8) WFLYPC0017: Shutting down process controller
18:57:29,488 INFO [org.jboss.as.process] (Thread-8) WFLYPC0016: All processes finished; exiting

Here is my slave's "host-slave.xml", important parts:

The SSH is configured for the "jboss" operating system user and i am starting the HC (domain.sh) as jboss user. The JBoss administrator, configured at installation is "jbossadm"

I am using the following startup script, at the slave:

./domain.sh -Djboss.domain.master.address=192.168.244.146 --host-config=host-slave.xml

... sorry, but i am quite new on the JBoss world.

Any help will be very helpful.

Thanks