I recently used magic-wormhole [1] for this. It was a 1-line command that gave me a keyphrase that I told to someone else. They typed the same command on their

I recently used magic-wormhole [1] for this. It was a 1-line command that gave me a keyphrase that I told to someone else. They typed the same command on their end, put in the keyphrase, and received my file. No IPs, no forwarding ports or files. It was a magical experience and Just Worked. [1] https://github.com/warner/magic-wormhole https://github.com/warner/magic-wormhole