> I ended up writing a bash script that will chunk and scp the files to a central server, and if it fails a chunk, it leaves it in the directory for her to manually re-run.
Use Syncthing, it traverses NATs, it is trivial to set up, it is seemingly very secure by its nature, and crucially for you, it transfers in blocks. You can administer it through a web interface with credentials (or with none, if it's just listening on loopback).
Use Syncthing, it traverses NATs, it is trivial to set up, it is seemingly very secure by its nature, and crucially for you, it transfers in blocks. You can administer it through a web interface with credentials (or with none, if it's just listening on loopback).