Hello, I'm the part time FTP server administrator (with no real full-time admin). We currently only allow ACTV mode connections. Some of our clients have had issues with this but for the most part they've been ok using ACTV. For the few who aren't, we've been able to push the data over to their servers from ours. there is one client in particular however who is currently having trouble. He is using file-zilla and issuing a PORT command. First, does using the PORT command imply that you are in ACTV mode? Second is there a way in FileZilla to explicitly change to ACTV mode? Thanks for the help, _Ramy
A:
Active mode requires the PORT command. PORT is what tells the server where to connect to on the client in order to open the data channel.
Active FTP breaks when the client is behind NAT, hence Passive is the preferred default in most situations where FTP is used. It is strongly preferable to not use FTP and switch to SFTP.
Yann Ramin
2010-05-11 16:33:07
thanks. please see my additional comments.
Ramy
2010-05-11 17:48:16
ok, really not sure what's happening here. Trying to test FileZilla from the same side of the firewall. I set FileZilla to "fall back to active". I can connect just fine. But when i try to transfer files i see this:Status: Directory listing successfulStatus: Starting download of /FILEError: Failed to open "FILE" for writingError: File transfer failedStatus: Starting download of /FILEError: Failed to open "FILE" for writingError: File transfer failedStatus: Starting download of /FILEError: Failed to open "FILE" for writingError: File transfer failed
Ramy
2010-05-11 18:29:06