Cant access Nas with Ftp works localy to access nas with normal network

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Bogo wrote:

Whenever i try to connect to my nas with ftp i get error "ECONNREFUSED - connection refuced by server" when trying from my windows phone and disable the wireless so it gets an external ipadress it get only that it could not connect to the server.

What port are you connecting to from your Windows phone with Wi-Fi disabled?  Hint: The answer should be 50001, because your port forwarding rule maps 50001 to the command port for FTP (21).  Don't bother trying this.  Your port forwarding is wrong.  More on this later.

As this is my first time setting up the FTP access i am sure i must be doing something wrong but i really dont see what it could be can someone help me?

 

 

Firmware on router: V1.0.5.70_1.1.91

Nas brand: is LS-QVL9A6

Using portforward from range 50000 to 50050 external to internal port 20-70

 This is not right.  More below.

Dynamic dns

Have both tryed from a windows phone (external with 4g) and from filezilla on a windows 10 pc within the same network.

 

 

error from log in router reads:

[LAN access from remote] from x.x.x.x:60268 to 192.168.1.135:20, Friday, Jul 01,2016 05:55:29

I assume this log corresponds to your filezilla test from your Windows PC.  You cannot reliably test ftp to the external IP address from the internal network.

[Admin login] from source 192.168.1.2, Friday, Jul 01,2016 05:54:10

 

Error when using filezilla network test (passive mode)

Hämtar extern IP-adress från http://ip.filezilla-project.org/ip.php
Söker efter den korrekta externa IP-adressen
IP x.x.x.x db-cai-bgd-bji
Svar: 200 OK
PREP 50036
Svar: 200 Using port 50036, data token 921969476
PORT 31,208,163,198,195,116
Svar: 502 Port mismatch. Received arguments contained port 50002. Command has been tained by router or firewall. 

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I could be mistaken, but this doesn't look like a passive mode FTP.  There should be a PASV command.  The PORT command is usually indicative of active mode FTP.

As I mentioned above, your port forwarding rule doesn't look right.  If you are trying to use passive mode FTP, then you need to do two things:

1. Set up a range of ports that your FTP server will be listening on for incoming data connections.  It looks like you are trying to use 50000-50050, which is fine.
2. Set up port forwarding from 50000-50050 to 50000-50050.  The external and internal ports must match because FTP exchanges the port number to use for the data connection between the client and server (via the PORT and PASV commands).  If port forwarding changes the port, then the data connection will fail.

You'll also need to open port 21 so that external clients can reach the FTP server on the command port, so you'll need a separate port forwarding rule for that.