![]() This is dependent on the specific FTP server so you will need to use the help menu. The final thing to do is set up usernames, passwords and to define what directories they will have access to. Many FTP clients will try to use Passive mode by default, so the user has to know how to turn off Passive mode. Active mode usually won't work through a firewall or proxy server, and the client must specifically be set for active mode. There are two problems with using Active mode. If you only want to use Active mode, it is sufficient to only map port 21 through your router. Port 21 will always need to be mapped, and if you want to allow Passive Mode, you will have to map the port range you have selected in the Passive port range setting of the FTP server. If you have a router, you will have to map several ports through the router to your FTP computer. However you can limit the range to help reduce the complications of setting up your router. By default their is generally a very wide number of ports made available. The administrator can define exactly which port range you want to use. Almost all servers that can accept passive connections will have a "Passive port range" setting. After the initial connection through port 21, the server assigns a port range for the client to use. ![]() In Passive mode the server behaves a bit differently. At this point the server sends an outbound connection conformation on port 20 which the client sees then they start communicating using various ports negotiated between them, moving files back and fourth. In active mode the client connects to the server using port 21. I'm not going to get into the technical details which can get really confusing, but this is basically what's happening. The difference between Active and Passive is how the server communicates with the client. Once connected you just drag files into or out of the Explorer window to your computer. Just put ftp:// followed by the server address in the address line. Windows Explorer can be used as an FTP client. If Passive mode is off, then you are using Active mode but they don't generally explain that clearly. You will usually see an option in your FTP client for Passive. There are two connection modes to operate an FTP server. Nice screens, easy to setup, clear and concise wizards.
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