Use the server's external IP address instead not working

[EDV]

we have following issue

protocol: ftp
encryption: Require explicit FTP over TLS
Logon: normal
our client have an internal ip 10.35..4
the destination address is the internal ip address from our firewall : 10.35..254
the real destination is an server outside: 172......

when the client open the connection to the ftp server:
The ftp connection can be opened to the destination server!

But wenn the command "LIST" where send to the server, we don't get a sign from the real destination ftp server, because the protocol package has the wrong IP address information included into the package to the client. Maybe it wll be a bug?

when we use another software 4 example "smartftp", to do the same thing -> it works fine.
We we want to use flezilla.

[EDV]

Pictur of Infos

[Alexander Schuch]

Please be sure to understand the differences between active and passive mode. Maybe you should use active mode FTP instead? Does that help?

[Alexander Schuch]

No reply for more than 28 days.

[cochran]

Hello,

we have the same issue.

We must use a internal IP (on a firewall) with NATing to the destination IP.

Only passive mode is in this case possible.

The problem is, that in the FTP-packet (or in our case a FTPS-packet) is the outside IP is transmitted. FileZilla must ignore this and use a customized ip (the locally IP of the Firewall).

That is that, what the other FTP-clients do to fix this FTP issue.

In the best case this option is placed in the connection settings. In the moment are only the global option avaiable and works not.

[Alexander Schuch]

I do not fully understand.

You connect to a server. You use PASV command. The server replies with an IP address and port. But you do not want to use that IP address and port but another one?

[EDV]

Picture With Issue Explaination

[EDV]

Hello Team.

I attached a file with a short explaination inside.

We hope it works!