Subject: FTP over T-Mobile Connection
Date: 2022-09-26 17:17:00
From: Dave
Source: ftp-t-mobile-connection

We have a client who just swapped out their internet to T-Mobile and now our application has stopped working. They noted this:

> Other users of T-Mobile Home (or business) 5G internet have also
> reported problems with FTP transfers.
> Several users on forums have reported that FTP will, indeed, work if
> you do the following in the FTP client:
> Turn off PASV (Passive) mode and use Active Mode. It may be necessary
> to use Port Mode if that's available. Also, there may. be a mode
> called EPSV. Use that if available.
> Here's what one use wrote and explained:
> Here's the heart of the T-Mobile Home Internet FTP problem. T-Mobile
> Home Internet ISP is IPV6 and my Cox Cable ISP is IPV4. The older PASV
> FTP command (the default for at least my CuteFTP program) works
> perfectly on Cox Cable ISP but won't work on T-Mobile Home Internet
> IPV6. What did work is changing Data connection type in my FTP program
> from "Use global settings" to "Use EPSV"
> "So, what's the difference now between EPSV and PASV? Or Extended
> Passive Mode and Passive Mode? The main difference is that EPSV and
> Extended Passive Mode are primarily designed to accommodate both IPV4
> and IPV6 addresses, while the older PASV command and Passive Mode
> could only support IPV4."

So, the question becomes, does the ComponentPro FTP have the ability to use other connection modes - other than PSV?


Note: This question has been asked on the Q&A forum of Thang Dang's fraudulent ComponentPro brand
If you purchased anything from ComponentPro, you have been scammed. Contact the payment processor
who sold you the license and ask for your money back.

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