You purchased an InvizBox 2 but you are not sure if it has an inbuilt firewall or if it requires setting up.
So does my InvizBox 2 have a firewall?
The InvizBox is built on a heavily modified version of the OpenWRT Linux distribution. It uses the standard fw3 firewall (https://openwrt.org/docs/guide-user/firewall/start) which is part of that Linux distribution.
Do I have to do anything to set it up or to maintain it?
No. All updates are handled on the InvizBox. You don't need to do anything.
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