Install Nessus Agents
To install agents, use the procedures described in the Nessus Agent User Guide.
Once installed, Nessus Agents are linked to Nessus Manager. Linked agents automatically download plugins from the manager upon connection; this process can take several minutes and you must perform it before an agent can return scan results.
Once installed, an agent links to Nessus Manager after a random delay ranging from zero to five minutes. Enforcing a delay reduces network traffic when deploying or restarting large amounts of agents, and reduces the load on Nessus Manager. Agents automatically download plugins from the manager upon linking; this process can take several minutes and you before an agent can return scan results.