ConfirmationĬonnect to your FTP host via an FTP client to confirm that the FTP service uses only the assigned port. Note: If the “Data Channel Port Range” field is grayed out, make sure that you are changing the server-level settings. Using a single server port will result in having the same combination which may result in the concurrent FTP requests to be rejected. ![]() The FTP sessions are uniquely identified thanks to this combination. However, it is not recommended because using single port will limit the number of “ Client IP – Client Port – Server Port” combinations. ![]() After this change, make sure to restart “Microsoft FTP Service” ( Start > Run > services.msc).Īs you see in the example above, it is technically possible to use IIS FTP over a single port. The short answer is “Yes” but there is a specific format you should enter the value in.įor using IIS FTP via a specific port, go to “FTP Firewall Support” module in IIS and enter the port number twice with a dash sign (-) between in the “ Data Channel Port Range” field. This is question that could be asked: Is it possible to use a single port instead of a port range for IIS FTP? ![]() When in passive mode, IIS asks for a port range for the FTP service.
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