SOLVED External FTP access doesn't work

[matclou]

Dear Community,

I recently tried to configure an external access to my FreeNAS system (11.3) via FTP, but I had some problems.

I have taken the following steps:

1. Activate FTP on my local FreeNAS system with Port 21 (deactivatet root and anonymous login, activated local users login).

2. Tried to reach the local FTP server via ftp://freenas.local:21/ - it worked.

3. I have registered on noip.com for a Dynamic DNS, i received an URL and it is identical with my external IP adress - I checked It via command promt / ping.

4. I configured an external port (TCP, not UDP) via my router (a Speedport W 724V from Deusche Telekom, it's manufactured by Sercomm) and redirected it to the FreeNAS, Port 21.

5. I checked the external port via https://www.yougetsignal.com/tools/open-ports/ and it is open.

6. However, if I try to conncet to my external ftp adress (which would be ftp://[EXTERNALURL]:55325/ the URL can't be reached.

Do you have any solutions for this situation? Can I only test it outside my network?

Kind regards

Matclou

PS: This isn't an hardware issue, but you can find my configuration here: https://www.ixsystems.com/community...e-booting-new-installation.82301/#post-569575

 

[Kcaj]

Are you forwarding port 21 to the correct internal IP? From the image in step 4 what is “freenas”, a hostname?

Edit: You must have also setup a task which keeps you DNS updated correct? Double check its still valid...

 

[matclou]

Freenas is the the NAS device in my home network. So the external port is 55325 and the internal port is 21 (at the NAS).

But I think it has something to do with the fact that you can't call an external address within the home network that references the home network again. Is that possible?

 

[Kcaj]

I don't understand what you mean...

The firewall needs to know where to forward port 21 to, from step 4 can you change that to an internal IP of the FTP server?

So, the firewall receives a FTP request on port 55325 from the public internet which it will translate to port 21. It then needs to forward it onto host 192.168.1.5 (for example) on port 21

 

[matclou]

Step 4 refers to an internal IP - "freenas" stands for the internal IP of my NAS device ;-) - and it translate the ftp request on port 55325 to port 21 on the NAS device...

 

[Kcaj]

Is “freenas” then an “alias” for an IP or is it a hostname?

Can the firewall reach the FTP server?

 

[Kcaj]

Just follow this guide

 

[matclou]

Just an update: It worked and I don't really know, where my error was ... but no it's all fine ;-)

Thank you all!