The cost of a Nessus Professional license is a significant consideration for most organizations and individuals. Based on current market data, pricing varies by subscription term, features, and volume.
[ Purchase via Tenable/Partner ] ➔ [ Receive Activation Code ] ➔ [ Register Key Online ] ➔ [ Input into Nessus UI ] Official Acquisition Channels
The venerable Nmap network mapper can be extended with the Nmap Scripting Engine (NSE) to perform vulnerability detection. While not as automated or comprehensive as Nessus, Nmap combined with community scripts can identify many common vulnerabilities. The learning curve is steeper, but the price (free) and flexibility appeal to many technical users.
: Purchase directly from the Tenable online store for immediate key generation.
Open your web browser and navigate to https://localhost:8834 . Select on the initial setup screen. Input your Activation Code when prompted. Create an administrator username and password.