File transfer not working externally?


I have setup openfire so that i can get people to join in the chat that are not on the network, however file transfers are not working.

I have forwarded the following ports for the external access both tcp and udp




When i try and send a file from the external IP to the internal IP it fails

internal to internal works fine

external to internal does not

external to external does not.

Any ideas?

Have you tried to use Spark 2.5.8? There is an issue with 2.6.0 regarding file transfer. But I am actually not sure if this should work at all.