Did you disable the firewall that comes with RH9 ?
Yes, they are disabled, but still nothing. Iptables disabled either. :)
But i found an error message when i tried to access the server on the
1099 port from a browser it may mean something:
mapping configuration error, favicon.ico
or something like this. And one more thing. The servers are in a DMZ, and I dont have access to configuration. I am newbie at linux too. :) Can the problem be, that the port 1099 is somehow disabled in network devices, e.g. switch, router?
Thank you for your fast answer Béla,
Time to consult the network admin. Maybe you want to go through the INSTALL.html instructions for detection whether mcast works, as shipped with JGroups.