Avision @V2800 - Manual (Page 57)

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3. In the Default Web Site Properties dialog, click the Directory Security
tab and then click the Edit button from the Secure communication field.
The Secure Communication dialog appears.
4. Check if “Require secure channel (SSL)” and “Ignore client
certificates” have been selected.
Or
You may simply type “netstat” in a MS-DOS command. If the https has been
established as below, then the server is ready to receive scanned document from
the product via HTTPS.