Thanks for your reply - here is more info:
There are no errors in the log:
Oct 27 22:00:47 testftpfedora pure-ftpd: (?@10.XX.XX.XXX) [INFO] New connection from 10.3.7.232
Oct 27 22:01:19 testftpfedora pure-ftpd: (?@10.XX.XX.XXX) [INFO] ftptestuser is now logged in
I just remembered that when logging in from the local box (terminal window), it does go to passive mode when I request data such as a directory listing:
331 User ftptestuser OK. Password required
230-User ftptestuser has group access to: 501
230 OK. Current directory is /
Remote system type is UNIX.
Using binary mode to transfer files.
227 Entering Passive Mode (127,0,0,1,195,82)
150 Accepted data connection
So... to answer your questions - no errors in /var/log/messages whether I am logging in from inside the network or outside. There may be other logs you can suggest that I look at that I am not aware of... The issue seems to be both inside and outside the network. However, VSFTP on the same box/same network seems to work fine in Active mode.