Re: rmi connection

On Wed, 12 Jan 2005 16:40:10 -0700, haipeng du <[email protected]> wrote:

>Everyone:
>I create rmi server and client by using spring framework. The problem
>is that I can not connect to rmi server when the server is running on
>Fedora core 2. I have already create a policy file that grant all
>permissions, just like:
>grant {
>permission java.security.AllPermission;
>};
>If i move my rmi to other operating system, such as debian (with x
>window), everything is good. I bet that because my operating system
>network setting. But I do not know how to fix that. Could you give me
>some ideas about these?
>Thanks a lot.
>
>--
>Haipeng Du
>Software Engineer
>Comphealth,
>Salt Lake City

Hi,

Fedora Core and RMI do not get on very well by default.

After installing FC3 from RH9, I noticed that I could not make RMI
connections any more (connection refused).

There are two main problems:

1. By default, gdm does not allow remote X connections

2. By default, the FC firewall does not allow RMI connections (the firewall
 is not so paranoid by default in RH9).

Here's what I did to configure the server:

1. As root, run gdmconfig and deselect the option that says
"Security->Always disallow TCP connections to X server". You could also edit
the gdm .config file and restart X to fix this problem.

2. Run the command "iptables -F" as root. This deletes the firewall rule
that bans incoming X connections. This command also deletes all other
firewall rules on that machine, but hey, a general solution is always the
best option, apparently.

Hope that helps!

Thanks,
~Carl.

p.s. This message could also be posted to the main networking mailing list
if people are having problems with FC and Java networking.

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