Hi,
Thanks for your repsponse. Are you referring the Gatekeeper product? Do you
know if RMI over IIOP can be used in this solution? I want keep the ease of
RMI programming and get the enterprise class proxy to go through the
firewalls. Although I have not looked at RMI over IIOP and am not sure if this
would be a fit, especially with EJB.
Thanks again.
Jeff Vagg
>Jeffrey,
>
>Using CORBA through the firewalls is the right approach, as no attempt
>has been made to develop RMI proxies. You need to evaluate the
>feasibility of accessing Weblogic EJBs using IIOP, which is implemented
>using Visibroker. Visi provides an IIOP proxy today, which is going to
>implement the OMG Firewall spec in its forthcoming release. Once this
>plumbing is in place, you can have a rich, stateful client.
>Implementation of CORBA Firewall spec, full support of IIOP in the EJB
>products and implementation of rich authentication and authroizatoin in
>EJB servers should mature over the next year.
>
>You can access my JavAus99 presentation "Enhancing Enterprise Firewall
>for Java, CORBA and EJBs" from my web page http://talk.to/rajeev.
>
>Rajeev
>
>Jeffrey Vagg wrote:
>>
>> Hi,
>>
>> I am not sure if this is the best alias for this. Although it is based
>> around accessing EJB through a DMZ.
>>
>> I am working on an application that has a DMZ configuration between the
>> intranet and the Internet. I am currently implementing an intranet EJB
>> solution using Weblogic that has no issues with firewalls because it
>> doesn't go through them. However, there is another application that I
>> am starting to gather requirements for. The client from this
>> application will be located on the other side of the outer DMZ firewall,
>> the Internet. I am not sure if the client will be HTML or Java. The
>> outer firewall only has port 80 open while the inner firewall has one or
>> two ports open for this application. In the DMZ I currently have
>> Netscape Enterprise Web Server.
>>
>> If I want to reuse some of the EJB services that I created previously,
>> what would be the suggested config? Is it possible to have a Java
>> client and use JNDI/EJB through a DMZ? I assume that callbacks would
>> not be permitted which would disallow the use of such things as JMS. Is
>> this correct? Does anyone know if Weblogic has a solution for this? I
>> know that Sun's JDK does HTTP tunneling. Does Weblogic's RMI do the
>> same thing and how does this apply to EJB?
>>
>> I am leaning towards an HTML client and use servlets/JSP. It sounds as
>> if there is too many problems with RMI through the firewall. Although I
>> would like a more stateful client for my customers. Also I am not sure
>> if the JNDI lookup would work because the Weblogic URL is t3://....
>> which does not have the http protocol in it. The web server / servlet
>> engine in the DMZ can either process the request or act as a proxy
>> through the inner firewall.
>>
>> Any comments or suggestions would be appreciated.
>>
>> Thanks
>> Jeff Vagg
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