Registering call back object reference

hello to all.
I am developing a RMI application and I have a problem while registering the call back reference object of client.
I have followed what ever thing required to register the clients object reference to register at the server side and server can call my client and it works fine in local environment. But when I use live environment my client can register the object but server cannot call my client.
When I use following code while registering the client reference object
System.out.println("Call me back registered as \n"+cmb); //cmb the the clients reference objectit gives following output
Call me back registered as  
Admin_Stub[UnicastRef [liveRef: [endpoint:[192.168.1.2:56851](remote),objID:[-57856c9e:124db6554b6:-7ffe, -7745666993431596650]]]]  At localhost it works fine even if my IP address changes to 192.168.1.2 to 192.168.1.4 or 6 i.e. works fine in local environment but when registering to the live environment it registers with the same IP address as shown in the output. So what can I do to register the object so that server can call me.
Also when server get the reference of my client's object and try to connect my client it gives an exception of connection time out, which means it cannot find my client to reply.
So, please suggest me what to do.
Thank in advance.

Very difficult, in fact impossible. You have to allolw for the presence or absence of:
(a) client-side firewalls
(b) client-side NAT
(c) misconfigured client-side DNS, e.g. the Linux /etc/hosts issue described in the FAQ item.
So some client-side configuration is inevitable. Most people avoid callback-based applications over the Internet for these reasons, as well as the security reasons that cause this issue in the first place.

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    Message was edited by:
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    Hi!
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    We have created a business process manager (BPM) layer between our client GUI
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    Ngai* Stuart <[email protected]> on 01/20/98 09:14:28 AM
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    cc:
    Subject: Forte and OrbixWeb call-back
    Has anyone actually tried the tech note 11153 "Java call-in/call-out and
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    <<< Stuart Ngai (416)359-4306 [email protected] >>>
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    -0500
    Message-Id:
    <c=CA%a=_%p=Nesbitt_Burns_In%[email protected]>
    From: "Ngai, Stuart" <[email protected]>
    To: "'[email protected]'" <[email protected]>
    Subject: Forte and OrbixWeb call-back
    Date: Tue, 20 Jan 1998 10:27:39 -0500
    X-Mailer: Microsoft Exchange Server Internet Mail Connector Version 4.0.995.52
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    Reply-To: "Ngai, Stuart" <[email protected]>

    Peggy,
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    Troels
    Lindhard Fort&eacute; Solutions
    -----Original Message-----
    From: Peggy Lynn Adrian [SMTP:[email protected]]
    Sent: Thursday, January 15, 1998 10:31 PM
    To: [email protected]
    Subject: Forte and Powerbuilder Experience Needed
    I sent this query to Forte support but maybe someone out there can help me
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    ---------------------- Forwarded by Peggy Lynn Adrian/AM/LLY on 01/15/98 04:30
    PM ---------------------------
    Peggy Lynn Adrian
    01/14/98 03:55 PM
    To: [email protected]
    cc: Peggy Lynn Adrian/AM/LLY@Lilly
    Subject: Forte and Powerbuilder Experience Needed
    1) Do you have experience with PowerBuilder and Forte' applications running at
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    Message was edited by:
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    Hi Najeeb,
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    >
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    >> On 1/12/2011 1:35 PM, Steve wrote:
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    >>> am
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    >>>
    >>
    >>
    >> --
    >> Craig Wilson - MCNE, MCSE, CCNA
    >> Novell Knowledge Partner
    >>
    >> Novell does not officially monitor these forums.
    >>
    >> Suggestions/Opinions/Statements made by me are solely my own.
    >> These thoughts may not be shared by either Novell or any rational human.
    >
    >
    Craig Wilson - MCNE, MCSE, CCNA
    Novell Knowledge Partner
    Novell does not officially monitor these forums.
    Suggestions/Opinions/Statements made by me are solely my own.
    These thoughts may not be shared by either Novell or any rational human.

  • The Ole #1009: Cannot access a property or method of a null object reference ...

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