Most visitor visas to Australia exclude people doing any work whilst there, although there are a few exceptions to this. The main intent of the visitor visa is for people to visit either as a tourist or to visit family and friends and to effectively treat it as a holiday whilst in Australia. Visitor visas normally last for three, six or twelve months.
Types of Visa
The Australian government currently has six specific categories of visitor visa, as well as visas under the categories of Studying and Training, Family and Partners, Working and Skilled visas and Refugee and Humanitarian visas.
All people from foreign countries must have a visa to enter Australia. It should be a rather simple process, but depending on your country of origin and your situation, it might become more complicated than you originally thought. Some countries, like Thailand, are considered high risk countries, and demands further paperwork to decide whether or not a visa will be granted. There's, however, no guarantee that a visa will be granted even on these premises.