You can use
scp to copy single or multiple files and also use
rsync with an ssh transport:
scp -r localdirectoryname username@hostname:/remotepath
rsync -av localdirectory username@hostname:/remotepath
Both programs also work the other way round, with the remote part as the origin and the local as the destination.
man scp and
If you indeed need an intermediate server, you could use ssh port forwarding:
In one shell, use this command to establish a port forwarding:
ssh -NL 10022:10.199.199.91:22 email@example.com
This connects port 10022 on your local machine with port 22 on
10.199.199.91, but won't open a shell, instead just blocks until you terminate it.
Afterwards, on another shell/xterm, you can use either
scp -r -P 10022 localpath soak@localhost:/remotepath
but have to be aware that
soak@localhost actually points to
firstname.lastname@example.org when entering your credentials.
Edit 2, now featuring rsync
As you specifically asked about rsync, here is how to use rsync instead of scp. It requires the same port forwarding enabled as the
rsync -av --rsh="ssh -p 10022" localpath soak@localhost:/remotepath
and again remember that you are actually connecting to