I'm trying to construct a webapp to add events to an employee's google calendar and would like to use OAuth for authentication.
However, my webapp is forced to be on an intranet behind a firewall; the server has outbound internet access, but blocks in-bound access if you aren't on the intranet or VPNing into the intranet.
I'm reading up on OAuth, but can't figure out if part of the authentication-handshaking process would be blocked by my firewall. (And I'd like to know if its possible before spending time to implement if it isn't possible; and know so if I run into errors I can debug them).