Thanks for your response,
i did tried what you’d told, but i don’t know why is still not “talking” to AD, what i did:
– Kerberos 5 -> realms -> my domain realm(mydomain.com.au) + KDC my domain IP address.
– Captive Portal -> Authentication -> Authorized Domain -> MyDomain.com.au
Those setting doesn’t work, and i even tried to put MyDomain.com.au IP Address in DNS as master zone and forwarder(not sure i did right for this section).
i did tried to check using DNS Lookup and it does found the server.