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Problem in running client from seperate machine

Sandeep Ghosh

Joined: Mar 10, 2001
Posts: 22
Hi all,
I am new to RMI. I have compiled the codes posted by Aj Manch in win2000.
which are as follows
//remote interface
package compute;
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface Compute extends Remote
Object executeTask() throws RemoteException;
//server implementation
package engine;
import java.rmi.*;
import java.rmi.server.*;
import compute.*;
public class ComputeEngine extends UnicastRemoteObject implements Compute
public ComputeEngine() throws RemoteException
public Object executeTask()
return "Invoked executeTask.";
public static void main(String[] args)
if (System.getSecurityManager() == null)
System.setSecurityManager(new RMISecurityManager());
String name = "//localhost/Compute";
try {
Compute engine = new ComputeEngine();
Naming.rebind(name, engine);
System.out.println("ComputeEngine bound");
} catch (Exception e)
System.err.println("ComputeEngine exception: " + e.getMessage()); e.printStackTrace();
//policy file
grant {
permission "*:1024-65535","connect,accept";
permission "*:80", "connect";
In addition to this I have written the client part as follows.
import compute.Compute;
import java.applet.Applet;
import java.awt.Graphics;
import java.rmi.*;
import java.rmi.server.*;
public class HelloApplet extends Applet{
String message="blank";
Compute obj= null;
public void init(){
message =(String)obj.executeTask();
catch (Exception e){
System.out.println("HelloApplet exception:"+ e.getMessage());
public void paint(Graphics g){
g.drawString(message, 25, 50);
In the server machine IIS server is running and I have added a virtual directory with Alias "Compute".When I am running the server and client from same machine it is working but when I am taking client to different machine it is giving following error access denied ( connect,resolve)
at, Compiled Code)
at java.lang.SecurityManager.checkPermission(, Compiled Code)
at java.lang.SecurityManager.checkConnect(
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(
at sun.rmi.transport.tcp.TCPChannel.createConnection(
at sun.rmi.transport.tcp.TCPChannel.newConnection(
at sun.rmi.server.UnicastRef.newCall(
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at java.rmi.Naming.lookup(
at HelloApplet.init(

could anybody give me the solution to the above problem.'
Thanks in advance

wood burning stoves
subject: Problem in running client from seperate machine
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