The internet is optional.
That won’t be a problem. Just have your PC, Mac or a web browser connected into one of Vera’s network ports or connect to Vera wirelessly.
Vera comes with a built-in pre-configured wireless connection. So if yours is a wireless / Wi-Fi device, you'll automatically see the 'Vera' network and can connect to it. Only difference is that, without the internet you won’t be able to remotely access Vera from outside the home nor will you see the helper videos on Vera’s setup pages.