[AG-TECH] Problem with BridgeServer

Thomas D. Uram turam at mcs.anl.gov
Mon Feb 27 09:40:23 CST 2006

I suspect that the bridge server is advertising itself using the internal
IP.  When external clients try to use the bridge, what address/hostname
appears in RAT?

If this is the problem, you can control the IP address used by the BridgeServer
(and other AG components) by setting the GLOBUS_HOSTNAME environment
variable to the desired address/hostname.


On 2/27/06 9:29 AM, Sebastian Tabarce wrote:
> Hello!
> I have the folowing setup for an AG Venue Server and an AG Bridge Server:
> - the Venue Server: one machine running Fedora Core 4 and AGTK 2.4. This 
> machine has the internal IP and the domain name 
> silicon.fe.up.pt. This machine has linked to it the real IP address 
> I don't know exactly what this means in terms of 
> networking, I just asked my network admin to make my machine visible to 
> the Internet and he told me that my machine can be seen from the 
> Internet with this address and also by its name silicon.fe.up.pt. Ports 
> 8000, 8002, 8004, 8006 TCP are opened for this machine.
> - the Bridge Server is running Slackware 10 and AGTK 2.4. Same as above, 
> internal IP is, external IP is and name 
> poly.fe.up.pt. Ports 50000-50010 UDP are opened.
> I've conducted some tests. On the internal network everything works 
> fine. From outside, people can connect to my Venue Server using 
> https://silicon.fe.up.pt:8000/Venues/default , they see the BridgeServer 
> and can choose Unicast, however they do not appear in my RAT window and, 
> of course, I cannot talk to them. Multicast is not an option. Also no 
> output in the terminal of the BridgeServer for machines trying to 
> connect from outside. For those on the local network I have the normal 
> output.
> Any thoughts about why the Bridge Server is not doing its job?
> Thanks,
> Sebastian

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