The wanboot-cgi program transmits the data and files from the WAN boot server to the client. You must ensure that this program is in a directory on the WAN boot server that is accessible to the client. One method to make this program accessible to the client is to store this program in the cgi-bin directory of the WAN boot server. You might need to configure your web server software to use the wanboot-cgi program as a CGI program. See your web server documentation for information about CGI program requirements.