SMC Networks NAS02 User Manual page 76

Select "Passive" when you enable Firewall protection on your Windows
OS.
Port
Default is "21" unless specified.
You can set one of the port range from 49152 to 65535.
Code Page
Default is "UTF-8".
For Japanese OS and you wish to upload/download file with Japanese
filename, then select "Japanese."
For Japanese OS and you wish to upload/download file with English or
Traditional/Simplified Chinese filename, then select "UTF-8."
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