The Ewon gateway can host a web site containing user define web pages. The hosting management can be done like for common web site using the Ewon FTP server. The pages can contain not only HTML but Ewon specific tags, called SSI, or some Basic scripts.

https://developer.ewon.biz/system/files_force/rg-0003-00-en-web-refenrece-guide.pdf?download=1