SCP is an easy to use tool for downloading a file or folder, from command line. It is actually a powerful tool that is available in linux for file transfer from command line. We have to mention here also wget, but that is a different topic.
To start your download from comand line you only need a putty terminal and ssh access to source folder.
scp -r firstname.lastname@example.org:/remotePathToFolder /localPath
In case you have ssh access on remote server only on a specific port, you can specify it as:
scp -P portNumber -r email@example.com:/remotePathToFolder /localPath
Make sure to use the uppercase P for port, as shown in the man:
scp usage: scp [-12346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file] [-l limit] [-o ssh_option] [-P port] [-S program] [[user@]host1:]file1 ... [[user@]host2:]file2