A dead simple way to send files between two linux machines not on the same network is to use a utility called [Magic Wormhole](https://github.com/warner/magic-wormhole). It is typically included in the standard repositories and is so simple the this blog post is going to end soon.
**Send a file:**
```bash
wormhole send filename
```
This will generate a code for you to share like `6-speculate-allow`
You can also rest in the fact that your data is secured by a [Password-Authenticated Key Agreement (PAKE)](https://en.wikipedia.org/wiki/Password-authenticated_key_agreement).