adze is an SSH+SFTP userspace server which authenticates only the running user by public keys. It enables tooling like rclone work for the systems that have 2-factor authentication. Distributed as single static binary, it works anywhere.

Loging to the remote, enter your codes, and start adze:

ssh -L 33456:localhost:33456 cluster
$ adze -p 33456

The you can point your tools to localhost:33456:

ssh -p 33456 localhost