The Nuxeo web installer / setup wizard relies on being connected to the internet to complete and cannot complete without it.
This makes in impossible to install Nuxeo in a secure environment with no internet access without cloning from an existing setup where internet access was present.
There are other ways to install Nuxeo besides the Wizard. In secure environments, you can unzip Nuxeo, set up nuxeo.conf as desired, and make sure you have nuxeo.wizard.done=true in it (or remove nuxeo.wizard.done=false).
