[jboss-user] Re: JBoss behind a NAT

[samk at twinix.com]

See Thread at: http://www.techienuggets.com/Detail?tx=17554 Posted on behalf of a User

PLease, I and having the same problem?

Did you find the solution?

Many Thanks!

In Response To: 

Good evening Community !

I'm trying to connect a client application to my JBoss, who is running inside a virtual machine (VMWare). The link between the virtual machine and its host is a NAT. We've got : 

* PC_Client : real machine that has the "IP1" ip address in the subnet1 (the real one)
* PC_Server_Host : real machine that has the "IP2" ip address in the subnet1 (the real one), and "IP3" ine the NAT VMWare subnet
* Server_Virtual : virtual machine, Linux RedHat, running into "PC_Server_Host" ; il has "IP4" in the NAT VMWare subnet

I have forwarded the ports 1098, 1099, 4444, 4445, 8080 and 8083 from PC_Server_Host to Server_Virtual.

I've read this article from the wiki : http://wiki.jboss.org/wiki/Wiki.jsp?page=UsingJBossBehindAFirewall

And I tried, as il was suggested to add : 
"-Djava.rmi.server.hostname=IP2 -Djava.rmi.server.useLocalHostname=true "
to my JBoss startup script run.sh. 

I launch JBoss on Server_Virtual then, and then I launch the client on PC_Client ; the client falls into a "Connection timed out" error.

With wireshark (ethereal), I found that the discussion starts well between the PC_Client and the PC_Server_Host on port 1098, but the client tries then to connect on "IP4", which is not visible to him... 

I've been looking on the web, and I found that the option should be "-Djava.rmi.server.useLocalHostname=false" instead of true, but it doesn't change anything to me.

Did I forget something ? I've also read that there may be a problem with the /etc/hosts file from the system where JBoss is running... 

Even if the problem seems complicated to explain, I think that it's a very common one, but when I follow the tips, it doesn't work...

Any idea ?

Thanks you (at least to have read my post !!!)