And, if you are working on PCI compliant environment then this is something you must fix. Default Configuration will display Server banner as following HTTP response header
Implementation
Go to JBoss/bin folder Add following in standalone.conf under JAVA_OPTS variable
Ex:
Restart JBoss application server, and you should see Server header is changed.
If you are interested in learning more about JBoss, then check out this course by Packt Publishing.