Users should not have to rely on the network being isolated for security.
Even when I have an offline network, I still use SSH whenever possible.
Yes, I don't benefit from initial verification, but I pin the certificate from then on.
I don't think that the current "all or nothing" paradigm that we use with SSL in browsers makes any sense.
I have been really disappointed over the last few years deploying network connected devices and trying to make their services available in a secure way.
It is not really possible for ipcams, routers, etc to offer services in HTTPS in a semi-online network. There should be a kind of 'encrypted but unverified' mode.
Even the worst failure mode is no worse than a plaintext connection.
