Filezilla Server quit working through 2wire 3800HGV-B router

[gene durrence]

I have AT&T Uverse internet service with a 2wire 3800HGV-B router.

I installed Filezilla Server on my home computer and it worked
perfectly for a few weeks. I tested it when I was out of state and I
could retrieve any file from my computer on my smartphone, xoom and
laptop. It suddenly quit working. I can't even frp from other
computers on my home network so it appears to be a router problem.

I have the port forwarding set up correctly. Filezilla Server is
working and I can ftp from the computer the server is running on but
not from any other computer.

Any suggestions would be appreciated.