While looking for the htm files on the WRVS4400N, I decided to look in the GPL Code. Because the GPL License from BusyBox does not include the user interface, all of the user interface pages are not there. If anyone has a listing of the htm pages in the WRVS4400N v1.00.15 or v1.00.16 Firmware, please let me know. This is because several of the htm files on the unit which are needed for it to work properly are not called from the upper pages (htm). The unit uses scripts to call the pages and hide the page names from the user. IPSec seems to be by: FreeS/WAN Open Operating System: BusyBox (Small Operating of Unix Utilities built on a Linux Platform).