What is sshfortress, and what are the differences and advantages between sshfortress and traditional fortress machine: All features are completely free to use, transparent login, user-less perception, reverse proxy of fortress machine world, support protocol has ssh sftp scp, support terminal recording and playback, sshfortress terminal recording format is fully compatible with scriptreplay, take up less disk space. No change in user habits, based on openssh native implementation, so the windowns version also supports openssh connection, file transfer, terminal video recording. Complete open source of all code.