Idea of Upload To FTP Icon
There is a folder, there is an arrow drawn over the folder that starts at the bottom and is placed right in the middle of it pointing upwards. In the upper right corner of the folder there is several beaming diagonal lines that look like WiFi or some wireless signal.
This Upload To FTP icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,200 icons, all in the same style and quality.