Passing large file to an isolated Node.JS server from PHP in the same local network

I have a NodeJS server running on the same local network which has to be disconnected from the Internet. A webserver on another computer that is online running PHP is making requests to the Node server.

I need an effective and fast way to pass 2GB~ files with PHP or some other way to the isolated Node server.

Thoughts? Thanks.

via Arda Ntourali