Passive FTP Ports

Recently I had to open some ports on my firewall for FTP access. I only opened ports 20/21 and then tested them with an FTP client. I got all kinds of connection problems. After doing some digging I found that passive FTP requires more ports. Here is a list of ports that you need to configure for Passive FTP

20-21
1024-65535

Depending on your firewall you can make a connection group bundling all of the ports into a single name which I did.

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