There is a serious problem in the firewall in FREESCO v0.4.3 that only effects PPP connections. This bug allows world wide access to the web control panel, web server, FTP server, Print server, and SSH server even when set in "s" secure mode.
To repair this problem go into the setup package menu and check for patches. Then install "patches-043-1"
This bug ONLY effects dial-up and DSL connections where FREESCO is the primary login source.