You can still get the SAINT engine for free.
ftp.saintcorporation.com
Note that this ftp server will NOT allow passive connections... so mozilla and gftp do not work.
It will scan and detect and list possible vulnerabilities but will not give you detailed information about them or how to fix them. That's ok, I can look up the vulnerabilities already (most of them are false alarms, things that I patched already etc.).
[ September 21, 2002: Message edited by: M. O'Brien ]