// construct the configuration, get the port, create the service, and prepare kdc objects
KdcConfiguration config = new KdcConfiguration( props );
int port = PropertiesUtils.get( env, KdcConfiguration.KERBEROS_PORT_KEY, KdcConfiguration.DEFAULT_KERBEROS_PORT );
Service service= new Service( "kerberos", TransportType.DATAGRAM, new InetSocketAddress( port ) );
LdapContext ctx = getBaseRealmContext( config, env );
PrincipalStore store = new JndiPrincipalStoreImpl( ctx, new LdapName( "ou=Users" ) );
SamSubsystem.getInstance().setUserContext( ( DirContext ) ctx, "ou=Users" );
try
{
minaRegistry.bind( service, new KerberosProtocolProvider( config, store ) );