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2017-09-04 2017-10-12
StatefulFTP (martin) wording (martin)
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When the %%FTP%% server is behind a %%NAT%%, it needs to know it's external IP address, so it can provide it to the client in a response to ''PASV'' command. When the %%FTP%% server is behind a %%NAT%%, it needs to know it's external IP address, so it can provide it to the client in a response to ''PASV'' command.
-It is typical, that the %%FTP%% server is not configured properly and provides its internal IP address, that cannot be used from a client network. By default WinSCP detects, when an unroutable IP address is provided, and uses a server (control connection) address instead.((Actually very rarely, if ever, the %%IP%% address of the data connection is different from the %%IP%% address of the control connection.)) You can tell that this happened from [[logging|a session log]]:+It is common, that the %%FTP%% server is not configured properly and provides its internal IP address, that cannot be used from a client network. By default WinSCP detects, when an unroutable IP address is provided, and uses a server (control connection) address instead.((Actually very rarely, if ever, the %%IP%% address of the data connection is different from the %%IP%% address of the control connection.)) You can tell that this happened from [[logging|a session log]]:
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Last modified: by martin