Nessus Architecture
¨Nessus server includes a vulnerability database (set of plug-ins), a knowledge base of the current active scan, and a scanning engine
¨Supports strong authentication for the client-to-server commumication via public key encryption
¨Nessus server runs on Unix platforms (Solaris, Linux, FreeBSD)
¨Nessus client runs on Linux, Solaris, FreeBSD, Windows9x, Windows NT/2000, and any Java-enabled browser (eg. Macintosh with Netscape)