The options on the Algorithms fold allow customization of the supported algorithms for each SFTP connection. The entries in the left column are the available algorithms and the entries in the right column are the selected algorithms. By selecting one or more algorithms, only those will be used during the SFTP communication. If no algorithms are selected for a section, the defaults will be used. The Default Algorithms are listed on the Algorithms tab on the SFTP Server.
During the handshake process, the selected options are negotiated with the server, starting with the entry at the top of the list. The first cipher and mac and compression algorithms to match an algorithm supported by the server will be used for the connection. If your company prefers certain algorithms over others, use the arrow buttons to move that cipher to the Selected column and to set the order with the most preferred algorithm at the top. Press the CTRL key while clicking to select multiple entries.