I am trying to connect from a jboss behinfd the firewall to jboss inside the firewall and getting this exception:

javax.naming.CommunicationException [Root exception is java.rmi.ConnectIOException: non-JRMP server at remote endpoint]
2006-03-23 19:54:18,197 INFO [STDOUT] at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:649)
2006-03-23 19:54:18,197 INFO [STDOUT] at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:509)

from inside the network it works fine.
My code snippest is

 Properties p1 = new Properties();
 p1.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
 p1.put(Context.URL_PKG_PREFIXES, "jboss.naming:org.jnp.interfaces");
 p1.put(Context.PROVIDER_URL, "server_external_IP_Address:1099");
 Context ctx1 = new InitialContext(p1);
 Object externalJobIntegerationMgmtHomeRef = ctx1.lookup(ExternalJobIntegerationMgmtHome.JNDI_NAME);
 externalJobIntegerationMgmtHome = (ExternalJobIntegerationMgmtHome)PortableRemoteObject.narrow(externalJobIntegerationMgmtHomeRef, ExternalJobIntegerationMgmtHome.class);

All ports are open I can do telnet on 1099,1098,4444 and many more...
Any idea why it is happening?

Cheers,

IJ