If sshd is off and ftpd is on core ftp doesn't work
if sshd is on and ftpd is off core ftp works
if both are off core ftp doesn't work

I'm just on my way to work so I can't try the other things you suggested
thanks

This is an excerpt from core ftp

"Connecting to 65.95.200.68 port 21
Server version: SSH-1.99-OpenSSH_3.1p1
Remote version may have SSH2 RSA padding bug
version: SSH-2.0-SSH-Local: Aug 15 2003 09:46:51
Using SSH protocol version 2
processing group exchange
processing key exchange"

I reset the router and reinstalled the latest firmware and nothing has changed.
I tried changing the internal port to 30 on port forwarding and the proftpd conf file but I couldn't establish a connection. I still get the error mesage when I try to set up a port forward for port 22
It also doesn't matter which computer I forward it to ssh responds

I think you need to take this up with Networks Everywhere. There is something seriously wrong here and it is definitely your router.

After properly resetting the router to factory defaults, everything is working as it should.
Thanks for all the help

Great! A router reset sure beats having to return a piece of busted hardware.