Ports used by ReportViewer web controls

When a ReportViewer control is used to access a report on a remote SQL Server database, on what ports does the communcation occur? Does the control communicate on on the SQL Server ports of 1433 and 1434 or does it communcate as a web service on port 80 (or 443 for HTPPS)?
[273 byte] By [PeterLlwr] at [2007-12-28]
# 1
It will depend on the url that you set for the report server. For a standard url it will use 80 (and 443), however you can always pass in a url for a non-standard port.
DanielReib at 2007-9-4 > top of Msdn Tech,SQL Server,SQL Server Reporting Services...

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