webcontrol_authentication 
 
-  Type: String
  -  Range / Valid values: Max 4096 characters
  -  Default: Not defined
  -  Group: Stream and Webcontrol
 
 
To protect HTTP Control by username and password, use this option for HTTP 1.1 Basic authentication. The string is specified as username:password. Do not specify this option for no authentication. This option must be placed in motion.conf and not in a thread config file., To protect HTTP Control by username and password, use this option for HTTP 1.1 Basic authentication. The string is specified as username:password. Do not specify this option for no authentication. This option must be placed in motion.conf and not in a thread config file.
By setting this to on, the control using http (browser) can only be accessed using login and password ( following the Basic Authentication defined in HTTP RFC )