I've run in a similar situation, but on Windows where TCPView often would not report all of the open ports (this situation seemed to come and go with varying Windows patches).
The console log should have something about port 8083:
09:46:04,027 INFO [WebService] Using RMI server codebase: http://127.0.0.1:8083/
Unfortunately, the console log no longer informs you of the JNDI port, 1099. But you can check that by doing a:
telnet localhost 1099
You'll get back mostly gibberish, but at least you'll know that the port is open.
(I just tried on Ubuntu 9.04 and those ports showed up in netstat.)
Thanks for your help, but for Jboss Server to open ports 1098,1099,8083 on startup, one has to comment them or remove them out in /etc/services files.