Accessing FTP externally

[jackyaz]

Hi there, I have set up FTP on my Linkstation and I am able to access the share's internally just fine. I have also set up Port Forwarding on my router and Port Scans show the FTP as open. However I am unable to access the FTP site via the web using my global IP. Can anyone help? Model: LS-WTGL/R1-V3 Regards, Jack

[davo]

you say you are able to access the shares locally but is this via smb or ftp? What happens if you type ftp://local-IP-Of-NAS in the address bar of the browser?

[jackyaz]

It works using FTP with the local IP, it;s when using the global IP over FTP i get an error. I used an FTP checker that showed it going through to the IP of the LinkStation, but threw back an error, something to do with line returns and carriage returns

[davo]

If its working locally then the FTP server on the linkstation is working fine, something either on the router/gateway is blocking it from the WAN.

[jackyaz]

This is a log from ftptest.net

 

Status: Resolving address of xxxxxxxxx

Status: Connecting to xxxxxxxxxxxxx

Status: Connected, waiting for welcome message

Reply: 220 192.168.1.99 FTP server ready

Command: CLNT http://ftptest.net on behalf of xxxxxxxxxxx

Reply: 500 CLNT not understood

Command: USER Jack_Naisbett

Reply: 331 Password required for Jack_Naisbett.

Command: PASS *******

Reply: 230 User Jack_Naisbett logged in.

Command: SYST

Reply: 215 UNIX Type: L8

Command: FEAT

Error: Line feed received without preceding carriage return

[davo]

Firstly, edit your last post and remove your WAN IP!!

 

Secondly, i appear to be able to access the server fine using a browser (see pic below). Obvviously i do not have access the the share/s directly since i dont know the password you have setup for the Jack_Naisbett user.

 

http://i44.tinypic.com/m7s0vo.jpg

[jackyaz]

Woops, edited now!

 

And how did you do that? What am I doing wrong :/

[davo]

probably entering the wrong username/password combination.

[jackyaz]

Ok, I've tested it externally and it works, testing it internally using external IP doesnt work...I'm sure theres a reason and I was just being a bit thick!

[davo]

Of course it doesn't, for it to work on using your external IP from within your internal network the router/gateway would need to support NAT loopback, which it seems like it doesn't. What kind of router do you have?

[jackyaz]

Ahh right, think its a Netgear DGN2000 or something!

[davo]

ok, you might wanna talk to netgear about enabling NAT lookback on the router, but basically everything is working now.

[axe]

Just an addition:

 

The error you receive using ftptest.net  is a known bug in ProFTP (used in Linkstation):

 

See

 

http://bugs.proftpd.org/show_bug.cgi?id=3342