Re: RMI client behind a firewall, server behind a firewall too

From: Alex Molochnikov (NOBODY_at_NOSPAM.COM)
Date: 09/14/04 

Date: Tue, 14 Sep 2004 07:32:57 GMT

If you have no control over the firewalls at all, then there is no solution.
However, if you can negotiate opening of a few ports with the admin, then
the solution does exist. If the latter is the case, let me know and I will
walk you through the setup.

Alex Molochnikov
Gestalt Corporation
www.gestalt.com

"Robert Dodier" <robert_dodier@yahoo.com> wrote in message
news:6714766d.0409131150.1c4c3263@posting.google.com...
> Hello,
>
> Browsing the web & newsgroups, it looks like this problem doesn't
> have any kind of easy solution, but let's see if someone knows different.
>
> I want to have a RMI client behind a firewall and a RMI server
> behind another firewall. I don't have any control over the firewalls.
> I know port 80 will be open for http traffic, but that's it.
> The web server on either side isn't the same as the machine running
> the RMI client or server.
>
> I want the client to be able to call methods on server objects
> and also to enable callbacks from the server to the client.
>
> What can be done in this case? I've read the RMI docs at Sun,
> browsed through a few dozen webpages & news messages, and the
> situation looks pretty dark, actually. Maybe someone has cause
> for optimism here. Thanks for any information.
>
> Robert Dodier

Relevant Pages

  • Re: FTP on Server 2008
    ... I have enabled ports 21 and 443 also, but cannot access to the Server. ... FTP is still having problems through firewalls. ...
    (microsoft.public.windows.server.general)
  • Re: FTP on Server 2008
    ... I have enabled ports 21 and 443 also, but cannot access to the Server. ... I checked telnet server 21 and 443 from this server, but it isn't opened, even FTP is enabled in Windows Firewall with Advanced Security. ... It's a protocol designed before firewalls, so the concept of passing through firewalls is foreign to it. ...
    (microsoft.public.windows.server.general)
  • Re: NAT Security
    ... Note that NAT does NOTHING to protect the ports on the Windows server doing ... That server is wide open and waiting to be hacked or infected. ... What you are seeing in your port scans are the ports on the server itself. ... and linux firewalls ...
    (microsoft.public.win2000.security)
  • DCOM and firewalls
    ... I have read Michael Nelson's article on MSDN regarding tunnelling DCOM ... through firewalls. ... of ports that DCOM dynamically assigns to server applications. ...
    (microsoft.public.vc.atl)
  • Re: hardware firewall
    ... > comment was about firewalls and security based on his question. ... about installing a hardware firewall outside his wintendo boc) ... > server on anything, or that you've never run it on a quality hardware ... I mean down-time of an additional windows machine, ...
    (comp.security.misc)
Loading