[This is preliminary documentation and subject to change]
The Pause method of the IIsFtpServer object pauses the server operation.
IIsFtpServer.Pause
<%
Dim ServerObj
'Pause the second FTP server.
Set ServerObj = GetObject("IIS://LocalHost/MSFTPSVC/2")
ServerObj.Pause
%>
Start, IIsFtpService, Stop, Status