remote ftp not working in windows ec2

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http://serverfault.com – For some reason, I cannot use FTP with my Windows EC2 instance. I have the server set up with XAMPP, and the http service works fine outside the network. But FTP only works inside the network. Now I can connect the FTP service, I just can't USE it. I have already set the security group rule to allow all TCP ports. Does anyone have an idea why this isn't working? I also can't access the FileZilla server remote administration. (HowTos)