I am mulling over replacing the Fritzbox (served me well) with a Ubiquiti Amplifi now that I am on 2Degrees fibre. Eventually I would get a mesh aerial unit to expand 5Ghz to the downstairs space we are looking to renovate, but would look to get the core unit only to start with.

Does anyone know:

 

1. Assume with the latest firmware this works perfectly plugged straight into the ONT and doesn't need additional router in the mix?
2. Does it support my phone line in the same way as the Fritzbox? Currently I have an RJ11 plugged into the phone port on the Fritz which has enabled my current phones plugged into the existing jacks to work
3. Is it a suitably secure device from a firewall/internet protection point of view?
4. Any other comments/tips?

Cheers!