Explanation of the FTP and SFTP protocols
FTP is based on the client/server model for communications between computers. In this model, a computer called a server runs a program that "serves" data to other computers. The other computers run client programs that request information and process the replies that the server sends. When using FTP, the external computer (the external system) that is running the server program is called the FTP server (host, remote system).
For SFTP , the only requirement beyond the server requirements above is to run SFTP on the server. It is best to run it as an SSH-2 subsystem. If you select SFTP -only on the Login dialog and the SFTP subsystem is not found, WinSCP will try to find the SFTP server in some common directories ( /usr/lib/sftp-server , /usr/local/lib/sftp-server , etc.). This way, it is possible to use SFTP even with SSH-1 , which does not support subsystems.
If the -r flag is specified then directories will be copied recursively. Note that sftp does not follow symbolic links when performing recursive transfers.
There isn't currently a built-in PowerShell method for doing the SFTP part. You'll have to use something like or a PowerShell module like Posh-SSH.
In the following example (a typical sftp environment), john can sftp to the system, and view /etc folder and download the files from there.
SolarWinds' SFTP server comes with TFTP and SCP-server functionality as well, something which is pretty common with servers of these types. This makes it delightfully easy to perform all manner of transfers to a variety of devices, and to do so securely! SolarWinds also has a wide range of other software offerings, especially in the realm of networking, which gives a little added value here due to the ease of integration and expansion, though on its own the TFTP/SFTP/SCP server is totally free and fully functional!
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SCP is built purely for file transfers. Generally speaking, you can't generate directory listings (to view files within a directory), create directories, delete directories, delete files, and so on. Yes, these can be done on SSH but not with SCP alone. SFTP, on the other hand, can readily perform these operations on its own. This can be particularly useful if you're doing things interactively from a file transfer client and you don't know (or don't remember) where the source file or destination folder is in your remote host.
The Set permissions checkbox enables you to specify permissions to be set for the uploaded files. When unchecked the newly uploaded files will have default permissions 1 , which is platform-dependent, and the overwritten files usually preserve their previous permissions, but this can also vary with the platform. Setting permissions is not available if the server does not support UNIX-style permissions.
SFTP port number is the SSH port 22 (follow the link to see how it got that number). It is basically just an SSH server. Only once the user has logged in to the server using SSH can the SFTP protocol be initiated. There is no separate SFTP port exposed on servers. No need to configure another hole into firewalls.
Along with file transfers, clients will typically request directory information from the server. The format of information in directories is often primitive by today’s standards, and as such, the FTP client is sometimes only able to retrieve a subset of the attributes or properties of files available on the server (for instance, the date the file was last modified, but not the date of the file’s creation).
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The original SharpSsh seems to be dead and most other solutions either require installation of Windows executables or a bucketload of cash (or worse; both).