External FTP access to Dlink NAS

[Bugs]

Hi All.

 

I have been trying to setup external FTP access to my Dlink DNS 320 NAS for a few months now and have failed each time.

 

I have an account with No-Ip.com and have forwarded port 80 on my sky router to my NAS and I can access the NAS configuration pages with no problem.

 

As this was successful I thought i'd enable to FTP server for external access, so first off I enabled the FTP server and forwarded port 20, 21 on my Sky Router, I found this didn't work and I just got timeout errors.

 

After some reading I found there's a dynamic DNS setup actually on the NAS so under Management-Network Management-Dynamic DNS there's a drop down list for the provider, hostname and username and password I have filled it in with my No-IP account details but it still says its failing to update and obviously I cant FTP into my NAS. I did notice in the dropdown list of providers it says No-IP.DDNS im assuming this is correct?

 

Does anyone have any thoughts on what I can try next?