Specifications

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The initial screen serves as a warning that all traffic to the Nessus GUI uses SSL (HTTPS). The first time you connect to the
Nessus web server, your browser will display some type of error indicating the connection is not trusted due to a self-signed
SSL certificate. For the first connection, accept the certificate to continue configuration. Instructions for installing a custom
certificate are covered later in this document, in the “Configuring Nessus with Custom SSL Certificate” section.
Due to the technical implementation of SSL certificates, it is not possible to ship a certificate with Nessus that
would be trusted to browsers. In order to avoid this warning, a custom certificate to your organization must be
used.