I needed to copy about 150mb of files between two computers and the only access I had was SSH. So I used Secure Copy (SCP). The syntax is as follows:
scp -rp backup/ user@remote.computer.tld:backup/
This recursively copies the entire folder (in this case backup/) and preserves modification times (add -C for compression) to the remote computer remote.computer.tld with the user name: user
You can also get a windows client here