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[tuizner]

Hi

I have searched for an answer to this problem but none is clear.

I have set up FTP on a DNS-323 which I can access from my home network (Router is DSL-2640R) but I cannot remotely access the DNS over the internet going through the router.  I have portforwarded 21 on the router and a visit to http://www.canyouseeme.org/ shows that port 21 is indeed open.  The IP address of the NAS is static.

I have tried DMZ, switching off firewalls (windows and router) and anti-virus but I cannot access remote FTP (Filezilla or webbrowsers).

The following is the output for local and remote access on Filezilla:
LOCAL (works):
Status:   Connecting to 192.168.1.99:21...
Status:   Connection established, waiting for welcome message...
Response:   220---------- Welcome to Pure-FTPd [TLS] ----------
Response:   220-You are user number 1 of 4 allowed.
Response:   220-Local time is now 17:12. Server port: 21.
Response:   220-This server supports FXP transfers
Response:   220 You will be disconnected after 2 minutes of inactivity.
Command:   USER mat
Response:   331 User mat OK. Password required
Command:   PASS ******
Response:   230 OK. Current restricted directory is /
Command:   SYST
Response:   215 UNIX Type: L8
Command:   FEAT
Response:   211-Extensions supported:
Response:    EPRT
Response:    IDLE
Response:    MDTM
Response:    SIZE
Response:    REST STREAM
Response:    MLST type*;size*;sizd*;modify*;UNIX.mode*;UNIX.uid*;UNIX.gid*;unique*;
Response:    MLSD
Response:    ESTP
Response:    PASV
Response:    EPSV
Response:    SPSV
Response:   211 End.
Status:   Connected
Status:   Retrieving directory listing...
Command:   PWD
Response:   257 "/" is your current location
Command:   TYPE I
Response:   200 TYPE is now 8-bit binary
Command:   PASV
Response:   227 Entering Passive Mode (192,168,1,99,217,69)
Command:   MLSD
Response:   150 Accepted data connection
Response:   226-ASCII
Response:   226-Options: -l
Response:   226 1 matches total
Status:   Directory listing successful

REMOTE (does not work - although it links to the FTP client):
Status:   Connecting to x.xx.xx.254:21...
Status:   Connection established, waiting for welcome message...
Response:   220 D-Link FTP version 1.0 ready at Fri Mar 25 17:13:16 2011
Command:   USER mat
Response:   331 Enter PASS command
Command:   PASS ******
Response:   530 User mat cannot log in.
Error:   Critical error
Error:   Could not connect to server


Seems to be an issue with the router as the FTP client clearly works?  Calls to D-LINK and to my ISP are useless.  D-LINK do not support the router (as it is modded by the ISP).  The ISP (TalkTalk) are useless regarding any information other then helping you connnect to the internet....

Any help appreciated.

[jamieburchell]

The welcome messages are different. It looks like you aren't actually connecting to the NAS's FTP server remotely, which would explan why user authentication has failed. Does the router have an FTP server running on port 21 perhaps?