I am not sure what 127.0.0.0 is but you localhost / local loopback is 127.0.0.1. You can try that and it should work the same as using localhost. Still you should be able to bind JBoss to your external IP address and then access the webconsole through it. What does your bind address show up as in the jboss.log file when starting JBoss? It should show up near the top of the log.
the 127.0.0.1 works indeed. About the logfile, i picked the server.log in my default/log dir (jboss.log couldnt be found). In that file stood the following:
2005-05-19 13:45:09,250 DEBUG [org.jboss.system.ServiceConfigurator] BindAddress set to 0.0.0.0 in jboss.mq:service=InvocationLayer,type=UIL2
2005-05-19 13:45:09,250 DEBUG [org.jboss.system.ServiceConfigurator] ServerBindPort set to 8093 in jboss.mq:service=InvocationLayer,type=UIL2
In boot.log stood the following:
13:44:53,609 DEBUG [ServerInfo] jboss.bind.address: 0.0.0.0