Can I open a port that appears to be closed for FTP access to a NAS?
Hey all - hope someone out there can help - thanks in advance for having a read of this post.
I'm running with the CGN3 modem in Gateway mode and using the internal router. I have an existing WD NAS unit set up on port 21 to allow FTP access from within and outside my local network. I recently acquired another WD NAS device and want to set it up for FTP as well.
My understanding is that ports 20 and 21 are typically used for FTP services, and that you cannot use the same port for two devices, hence why I'd like to use port 20 for the new NAS.
However, it appears that port 20 is 'closed'. Is this just an issue with setting up port forwarding, as I've tried that for hours and have had no luck. The support team from the NAS manufacturer indicates that I can run the two FTP servers on port 20 and 21 respectively, but only if I can get port 20 'open'.
Thanks for the reply. I'm pretty sure port 99 is closed / locked too. That said I'm pretty sure the Nas can allow me to specify the port so I'll try 99 when I get home from work later. Will keep you posted.