FTP - Forced passive connection with SSL

[Pessoft]

When connecting to FTP server using SSL and use passive connection is disabed in location configuration and also in global TC configuration, passive connection is always used. Is this bug or feature?

[CoolWater]

Hi,

IIRC, ghisler somewhere told "TC uses passive mode when an active connection could not be established.". You should take a look at the FTP log (or post it here) to see what is actually happening. Maybe you could also try another FTP client to see if it behaves the same.

Regards,
CoolWater

[ghisler(Author)]

No, PORT mode is definitely supported also via SSL. However, it will not work when there is a NAT (network address translation) router in between: Because the ftp control connection is encrypted, the router cannot see the PORT commands!