always get the message 425 can't open data connection

[wedeqq1]

Hello, everybody,
i've been trying for days to get the problem under control but it doesn't work ! i have opened port21 in the router, adjusted the firwall etc.... it seems to come up on the server but then it always says - can't open data connect - directory content could not be received......... what could be the reason ?
I have attached an excerpt of a server here

thanks in advance for your help LINUS


Status: Resolving the IP address for xxxxxxxxxxxxxxx.c.today
Status: Connecting to xx.xxx.xxx.xxx.xxx:21...
Status: Connected, waiting for welcome message...
Answer: 220-FileZilla Server version 0.9.37 beta
Answer: 220 Please visit https://c.today/
Command: USER xxxxxxx
Answer: 331 Password required for xxxxxxx
Command: PASS **********************
Response: 230 Logged on
Command: SYST
Answer: 215 UNIX emulated by FileZilla
Command: FEAT
Answer: 211 features:
Answer: MDTM
Answer: REST STREAM
Answer: SIZE
Answer: MLST type*;size*;modify*;
Answer: MLSD
Answer: UTF8
Response: CLNT
Answer: MFMT
Answer: 211 End
Status: Connected
Status: Receiving directory contents...
command: PWD
Answer: 257 "/" is current directory.
command: TYPE I
Answer: 200 Type set to I
Command: PASV
Answer: 227 Entering Passive Mode (xx,xx,xxx,xxx,x,xxx)
Command: MLSD
Answer: 425 Can't open data connection.
Error: Directory content could not be received

[Nobbie]

i have opened port21 in the router

That is not sufficient, passive mode needs TWO ports at least (Port 21 for communication, another one - which is handled out during communication - for the data). You must open a range of Ports. See https://forum.filezilla-project.org/vie ... hp?t=24925