Kerberos Authentication for multiple chat clients.

Hi, 

I am using smack 3.1.0 and I need to get authenticated couple of chat clients which are running on same machine using kerberos. Considering authentication using gss.conf file like System.setProperty("java.security.auth.login.config", "/path/jgss.conf");, seems like I can authenticate one client only, as file can have configuration for single client. Is there alternative way to pass principal (not passing principal in gss.conf file), because keytab file I can afford to have same. Or alternative to gss.conf itself.

thanks in advance.

-Nandkishor