brEWS (Basic Request Embedded Web Server Scanner) was designed to provide a simple web based tool to scan networks and identify Embedded Web Servers (EWSs). While there is no universally accepted definition, for our purposes, we define an EWS as follows:

Web server installed on the hardware during the manufacturing process (not an optional component)
Not designed for high performance
Limited functionality
Serves as an administrative interface to the host hardware

Info
http://brews.zscaler.com/getheaders.php