If he has removed stock from his property because of dog attacks, that's a bit of a worry.
As Stru said don't bring your own dog, when you hunt wild dogs you mimic their howl, they respond with their howls and come running. If they have been shot at and missed a few times they become very wary and may not get close enough for a shot. That's when they'll pick their own time to get close to you.
Wild dog attacks are very rare but best to keep together and have the campsite well lit.
Steaks and snags cooking will attract them, try and go vegetarian for the camp if you can, if not, try and only cook meat during the day.
I have never heard of dogs ripping into a tent, so that wouldn't concern me.
If you have a firearm bring it, perhaps contact your local SSAA ( sporting shooters association of Australia) they have teams that will come out and hunt them free of charge, you could possibly get some to come during your trip for peace of mind.
What area is the property in?
Go to youtube and look at some hunting videos, try and practice the howl, when you get there howl out to them, if you are doing it correctly you'll hear either nothing or 5-20 dogs respond, downside is that will annoy them and arouse their aggression, so maybe don't unless you plan to hunt them.