This icon is a file folder symbol with the wi-fi network symbol in the upper right corner. The wi-fi symbol has been transposed to fit within the corner and it is shown upside down with the smallest dot at the top rather than the bottom. The wi-fi symbol is also at a 45 degree angle rather than straight up and down which is how the icon is normally visualized.
Related to FTP Icon
Related icons are the icons with matching tags, as well as all network icons. All icons are in the same flat style. You can either download free PNG icons or buy SVG vectors