There is currently no way to remotely administer the unit if the Red interface is down. Perhaps something like a backup dial-up modem for remote dial-in?
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There is an addon that does something like that, google for ipcop dialin server.
Alternatively set up a dialin server in green/blue.
This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).