RMI client running from different machine giving error

HI all
I am trying to run the sample application getStart hello world.
I am able to run the java applet from the same machine ....
but i am get error when i am trying run client applet from the different machine .
(HelloApplet exception: access denied (java.net.SocketPermission)
client applet on machine1 and server and registory on machine2 in same lan .
i copied the Helloapplet.class and Helloclient.html to machine1.
appletviewer Helloclient.html
but the java version is different in both machines.......
can any one give some idea ....
the errror i am geting is :
HelloApplet exception: access denied (java.net.SocketPermission Neind-ws-003 res
olve)
java.security.AccessControlException: access denied (java.net.SocketPermission N
eind-ws-003 resolve)
at java.security.AccessControlContext.checkPermission(AccessControlConte
xt.java:272)
at java.security.AccessController.checkPermission(AccessController.java:
399)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:545)
at java.lang.SecurityManager.checkConnect(SecurityManager.java:1042)
at java.net.InetAddress.getAllByName0(InetAddress.java:559)
at java.net.InetAddress.getAllByName0(InetAddress.java:540)
at java.net.InetAddress.getByName(InetAddress.java:449)
at java.net.Socket.<init>(Socket.java:100)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirect
SocketFactory.java:25)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMaster
SocketFactory.java:120)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:499)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:190
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:174)
at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:318)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at java.rmi.Naming.lookup(Naming.java:84)
at examples.hello.HelloApplet.init(HelloApplet.java:23)
at sun.applet.AppletPanel.run(AppletPanel.java:344)
at java.lang.Thread.run(Thread.java:484)
The helloapplet.java code is :
package examples.hello;
import java.applet.Applet;
import java.awt.Graphics;
import java.rmi.Naming;
import java.rmi.RemoteException;
public class HelloApplet extends Applet {
String message = "blank";
// "obj" is the identifier that we'll use to refer
// to the remote object that implements the "Hello"
// interface
Hello obj = null;
public void init() {
     try {
          System.out.println("Path looking: " +getCodeBase().getHost());
     //obj = (Hello)Naming.lookup("//" +
          //     getCodeBase().getHost() + "/HelloServer");
               obj = (Hello)Naming.lookup("//Neind-ws-003/HelloServer");
     message = obj.sayHello();
     } catch (Exception e) {
     System.out.println("HelloApplet exception: " +
                    e.getMessage());
     e.printStackTrace();
public void paint(Graphics g) {
     g.drawString(message, 25, 50);
The helloclient.html code:
<HTML>
<title>Hello World</title>
<center> <h1>Hello World</h1> </center>
The message from the HelloServer is:
<p>
<applet
          code="examples.hello.HelloApplet"
width=500 height=120>
</applet>
</HTML>

Your problem is at the following line.
obj = (Hello)Naming.lookup("//Neind-ws-003/HelloServer");
The line you had commented beforehand is
//obj = (Hello)Naming.lookup("//" +
// getCodeBase().getHost() + "/HelloServer");
This worked because the applet was being retreived from the same server where the RMI server exists.
Remember, applets can only connect themselfs to the same host they are stored in and retreived from. This is because of VM, the sandbox does not allow you to connect to other machines other than the server where it resides on. If you use a applet viewer it might work if you loosen the security features. On a browser i do not belive it can be done. Maybe if you modify your security options for the VM you are able to achieve something, but personally i'm going for the "It cannot be done " answer because of what I said before.
Hope this helps
If any trouble then reply and I'll answer later.
Rui P.

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