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FTP file transfers fail when R7000 in the mix

AndrewM0412
Aspirant

FTP file transfers fail when R7000 in the mix

I have an FTP server running on Windows Server 2008 R2.  When accessed from the internal network everything works fine.  I can log in, browse files, download files of all sizes, etc.  And the behavior is solid regardless of the kind of FTP client that I am using.

 

Unfortunately when I try to access the FTP site externally through my Nighthawk R7000 I am not so successful.  I have port forwarding set up so that I can log in and browse files OK, but file transfers fail as often as not.  Some clients (e.g. command line FTP clients) have more success than others, but some popular clients (WinSCP, Windows Explorer, Mac Finder) fail so often that they are unusable.

 

FWIW, in addition to forwarding port 20/21, I have opened up a range for the dynamic ports that FTP uses and I have configured the server to ensure that the range it uses matches what is open on the router.

 

Any thoughts on things I might try to address this issue?

 

Model: R7000|AC1900 Smart WIFI Router
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antinode
Guru

Re: FTP file transfers fail when R7000 in the mix

> [...] R7000 [...]

   Firmware version?

> [...] file transfers fail as often as not. [...]

   Do you get an actual error code/message?  "fail" could mean almost
anything.  (Many command-line FTP clients have a "debug" command to
enable more detailed diagnostics.)  Does the choice of passive or active
mode matter?

> FWIW, in addition to forwarding port 20/21, I have opened up a range
> for the dynamic ports that FTP uses and I have configured the server to
> ensure that the range it uses matches what is open on the router.

   Tha actual port-forwarding rule(s) would be more helpful than a vague
description.  What. exactly, does "opened up a range for the dynamic
ports" mean?  Which ports?  "opened" how?  "configured" how?  Did doing
that help in any way?

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