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?
edited 9/26/2022 5:17:00 PM