Foreighn nationals travelling to Australia require a valid travel authority / visa from Australia ETA (Electronic Travel Authority) such as ETA or eVisitor Visa. Citizens from USA, UK, Canada, France, Italy, Germany
Tourist Visa Approval in Australia – Visa Online Assistance
Approval for Australia Electronic Travel Authority (ETA) Subclass 601 | OCSC Global
Electronic Travel Authority in Australia, Travel Visa, Application, Validity