Syncope as backend • OsgiConfigLoginModule uses a configuration as backend • Krb5LoginModule uses a Kerberos Server as backend • GSSAPILdapLoginModule uses a LDAP server as backend but delegate LDAP server KerberosLoginModule LoginModule BackendEngineFactory org.apache.karaf.jaas.modules.krb5.Krb5LoginModule The Kerberos login module uses the Oracle JVM Krb5 internal login module. Here is a simple configuration : and a Kerberos Login Module to connect to an ActiveDirectory Server, or any other LDAP server that needs a Kerberos tickets for authentication. Here is a simple configuration, that use as Kerberos login