First, you need to add an admin user to your managements memory realm database. JBoss 7 has a new process for adding this via a script instead of editing the props flat file directly.
Now you need to allow connection to the manager remotely. In the older versions of JBoss you simply uses the -b 0.0.0.0 option when starting it up. But now you can add this configuration instead. Configure the standalone.xml to allow access to the server from remote add IP or hostname to interfaces within JBOSS_HOME/standalone/configuration/standalone.xml
<!--?xml version="1.0" encoding="UTF-8" standalone="no"?-->
<interface name="management"> <!-- bind to the hostname -->
<!inet-address value="your-hostname"> </inet-address>
<interface name="public"> <!-- bind to the hostname -->
<inet-address value="your-hostname"> </inet-address>
Change your hostname to server hostname or IP, at that point restart the server.
Do you want to run JBoss 7 Management console on any specific IP address ?
If you want to add a management user you can simply run ./add-user.sh script, start your JBoss server and access it on localhost:9990.
Login with the same username and password you created.
Can you please elaborate on your issue ?