Under JDK7u4 the CLI could not connect to the management API on the AS (firewall and SELinux are disabled). My configuration is out-of-the-box standalone and I just have it binding to the loopback device. The CLI errors with the usual

The controller is not available at localhost:9999

and the AS errors with

10:20:46,708 ERROR [org.jboss.remoting.remote.connection] (Remoting "jbosscj:MANAGEMENT" read-1) JBREM000200: Remote connection failed: java.io.IOException: Connection reset by peer

Under JDK6u31 the CLI works fine.

This is a similar bug under OSX, https://community.jboss.org/message/737312, however the fix for OSX does not work for the Oracle JDK.