There is no scp or sftp on a standard installation of a Synology NAS. As these two softs are very useful, here’s how to install them.
First, install zlib and openssl :
When installing scp and sftp, be carefull. There is a specific version of ssh installed on Synology NAS. That’s why you must not install openssh with ipkg.
Create a temporary repertory :
Download the openssh packet (without installing it!) :
Extract the files contained in the openssh packet :
Copy scp and sftp in /bin :
Rename openssh-scp :
Create this symbolic link (it was necessary for me) :
Delete your temporary directory :
Article written with the help of this one (in french), with some updates. Thanks to its author.