Canon Wireless File Transmitter WFT-E8A 手册
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Changing Settings
Configured in [FTP server] 9 [Passive mode].
Enable this setting in network environments protected by a firewall. If an
Error 41 occurs (“Cannot connect to FTP server”), setting passive mode
to [Enable] may enable access to the FTP server.
Enable this setting in network environments protected by a firewall. If an
Error 41 occurs (“Cannot connect to FTP server”), setting passive mode
to [Enable] may enable access to the FTP server.
Passive Mode