WildFly starts with all interfaces bound against localhost.
The management listen on port 9990(http) and 9999(native) these ports can be separate bound to a different interface as other public needed ports like 8080.
Also the management ports are secured with user/passwd by default if you not using the same machine as client.
You will see a hint how to add the credentials if you access localhost:9990 via browser.
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And on top of what Wolf said, there is no jmx-console in AS7+ anymore.
Only admin console and it is secured.