Hello again. Sorry that I reply so late, but I was on holidays
Here are the logs (You don not have to spent much time on this, because (for me) this effects only less than 0,5% of my connections so it is no big problem to use another FTP program for this. The No.1 FTP program was and will be FlashFXP
Log via FlashFXP "Use Passive Mode" disabled:
Connecting to xxx.xxx.xxx.xxx
Connected to xxx.xxx.xxx.xxx Port xxxxxx
220 Serv-U FTP-Server v2.5k for WinSock ready...
USER xxxxxx
331 User name okay, need password.
PASS (hidden)
230 User logged in, proceed.
SYST
215 UNIX Type: L8
PWD
257 "/" is current directory.
TYPE A
200 Type set to A.
PORT xxx,xxx,xxx,xxx,14,208
200 PORT Command successful.
LIST -al
150 Opening ASCII mode data connection for /bin/ls.
Connection lost: xxx.xxx.xxx.xxx
-----------------------------------------------------------------------------------
Log via FlashFXP "Use Passive Mode" enabled:
Connecting to xxx.xxx.xxx.xxx
Connected to xxx.xxx.xxx.xxx Port xxxxxx
220 Serv-U FTP-Server v2.5k for WinSock ready...
USER xxxxxx
331 User name okay, need password.
PASS (hidden)
230 User logged in, proceed.
SYST
215 UNIX Type: L8
CWD /
250 Directory changed to /
PWD
257 "/" is current directory.
TYPE A
200 Type set to A.
PASV
227 Entering Passive Mode (xxx,xxx,xxx,xxx,13,59)
Data Socket Error: Connection timed out
----------------------------------------------------------------------------------
Log via ******** "Use Passive Mode" enabled:
Resolving host name xxx.xxx.xxx.xxx...
Connecting to (xxx.xxx.xxx.xxx)
Connected to (xxxxxxxxxxxxxxxxxxxxxxx) -> IP: xxx.xxx.xxx.xxx PORT: xxxxxx.
Socket connected waiting for login sequence.
220 Serv-U FTP-Server v2.5k for WinSock ready...
USER xxxxxx
331 User name okay, need password.
PASS (hidden)
230 User logged in, proceed.
SYST
215 UNIX Type: L8
FEAT
500 'FEAT': command not understood.
REST 100
350 Restarting at 100 - send STORE or RETRIEVE to initiate transfer.
REST 0
350 Restarting at 0 - send STORE or RETRIEVE to initiate transfer.
PWD
257 "/" is current directory.
TYPE A
200 Type set to A.
PASV
227 Entering Passive Mode (xxx,xxx,xxx,xxx,13,64)
Opening data connection IP: xxx.xxx.xxx.xxx PORT: xxxxxx.
Ein Verbindungsversuch ist fehlgeschlagen, da die Gegenstelle nach einer bestimmten Zeitspanne nicht ordnungsgemäà reagiert hat, oder die hergestellte Verbindung war fehlerhaft, da der verbundene Host nicht reagiert hat.
PORT xxx,xxx,xxx,xxx,8,33
200 PORT Command successful.
Opening data connection IP: xxx.xxx.xxx.xxx PORT: xxxxxx.
LIST -aL
150 Opening ASCII mode data connection for /bin/ls.
Connection closed. Server timeout.
----------------------------------------------------------------------------------
Log via ******** "Use Passive Mode" disabled:
Resolving host name xxx.xxx.xxx.xxx...
Connecting to (xxx.xxx.xxx.xxx).
Connected to (xxxxxxxxxxxxxxxxxxxxxxxx) -> IP: xxx.xxx.xxx.xxx PORT: xxxxxx.
Socket connected waiting for login sequence.
220-Serv-U FTP-Server v2.5e for WinSock ready...
USER xxxxxx
331 User name okay, need password.
PASS (hidden)
230 User logged in, proceed.
SYST
215 UNIX Type: L8
FEAT
500 'FEAT': command not understood.
REST 100
350 Restarting at 100 - send STORE or RETRIEVE to initiate transfer.
REST 0
350 Restarting at 0 - send STORE or RETRIEVE to initiate transfer.
PWD
257 "/" is current directory.
TYPE A
200 Type set to A.
PORT xxx,xxx,xxx,xxx,10,65
200 PORT Command successful.
Opening data connection IP: xxx.xxx.xxx.xxx PORT: xxxxxx.
LIST -aL
150 Opening ASCII mode data connection for /bin/ls.
11547 bytes received successfully. (1.09 KB/s) (00:00:01).
226 Transfer complete.