Your admissibility to Australia lies in the hands of the Australian immigration officers. They’re the ones who’ll decide whether you can legally enter the country or not. This decision making process begins when you apply for a visa, or even an Electronic Travel Authority (ETA). It can also happen at the airport, or any port of entry.

Read more at https://blog.traveleta.com.au/can-i-apply-for-an-eta-if-i-m-a-convicted-criminal-in-my-country for more information.