Hello, RBST_BETA154.exe allows you to run a redbaron server with security OFF, by taking care of checking the checksum of every player joining the game in place of the redbaron server. you need to have (on the server computer ) winpcap installed, to make it work. download here, or at https://www.winpcap.org/ in this way, you can fly any flightmodel modification and still have basic security. it checks only flight model security / integrity : ( just like redbaron security ) - acspecs files - ??damage files - fmparam* files - wingj* files it does NOT check : landmarks (the map ) locations like aerodromes, bridges, etc TED files for that, you need rssplyr.exe and rss server, and allow rss server to contact your rssplyr to check all these settings. check elsewhere on this site. S! Rens