What is the communication port used for Tenable.SC to Nessus Scanner interaction?

The communication port used for interaction between Tenable Security Center (SC) and Nessus Scanner is 8834. This port is specifically designated for the web-based nessusd service that Nessus uses, allowing it to receive and respond to requests made by Tenable SC. Accessing Nessus over this port enables the management and configuration of scans, as well as the ability to retrieve scan results and reports.

Using this designated port ensures secure and efficient communication between Tenable SC and the Nessus Scanner, facilitating the exchange of necessary data and commands for vulnerability assessment tasks. Other ports like 8080 and 443 do not serve this specific interaction purpose, while port 22 is typically used for secure shell (SSH) access rather than for interfacing with Nessus. Therefore, 8834 is the correct choice for this specific communication.