I found that since the installer is built with Flexera InstallAnywhere you can in fact do a silent install.
http://helpnet.flexerasoftware.com/installanywhere2012/Content/helplibrary/ia_ref_command_line_install_uninstall.htm
The process is to do an install by running the .exe from a command prompt with a "-r installer.properties" argument; which creates a installer response file. Then you can use that and run the installer with a "-i silent -f installer.properties".
This works for any installer built with InstallAnywhere. I was able to use this for the NFA Harvester, Console and Anomaly Detector installers.
Thanks
>KIP