SSH – How to copy a folder from remote machine to the system using ssh or any other way

If you have the permission to use FUSE on your local machine, install the sshfs package. SSHFS lets you access remote files via normal filesystem access: it mounts a directory tree accessed over SFTP. You only need to have SFTP access on the remote side (which is enabled by default with OpenSSH on Ubuntu). Once the remote directory is mounted, you can use the tools of your choice to manipulate files, without having to care whether they're local or remote.

mkdir ~/net/remote-server
sshfs remote-server:/ ~/net/remote-server
rsync -a --no-copy-links ~/net/remote-server/remote/path/ /local/path/
fusermount -u ~/net/remote-server

From AS try: ssh root@PC -L 12001:WS:22

and then (still from AS - probably another session): ssh root@localhost -p 12001 and it will be tunneled to WS to port 22.