# Nessus
Uploading any file to an on-prem Collector
Please follow the instructions below to upload a custom file to your EIP data silo.
## **Get the Private Key**
Download the Private Key that is associated with the on-prem collector. This can be found in the Epiphany Platform UI under Source Management → Configuration. In the Site Collectors panel for your Site Collector, choose Action → Download PEM File.
This file contains the private key used to authenticate to your on-prem collector and is specific to this collector instance.
This PEM file is the private key for the “upload” account on the collector and should be placed in a secure location available only to the users who will be moving data into the platform.
## Upload the custom file
Once you have the .PEM file and file available, you can upload files to the collector via Secure Copy (SCP) or Secure File Transfer Protocol (SFTP). You’ll need the DNS Hostname or IP Address of your on-prem collector.
SFTP: sftp -i (your key file.pem) upload@(your collector IP)
SCP: scp -i (PEM File) (filename) upload@(Collector):\~/upload
This will trigger an ingestion process for the on-prem collector, and the data will be uploaded to the Silo.
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Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.reveald.com/technical-documentation/data-sources/nessus.md?ask=
```
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The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.