I cannot get a file listing from an FTP Server used by my Church's WEB Site since installing a Netopia Cayman 3546 Gateway. I am using port 21 on FTP Explorer, which worked fine with a USB DSL modem that did not have a Firewall. I can log onto the FTP Server, but cannot get a file listing. I tried setting up a pinhole on the gateway using port 21, and the IP Address of my primary computer. But it did not solve the problem.