FTP questions

["Kohn, Joav" <joav . kohn @ us . landisgyr . com>]

a desperate plea for help.

i've tried to set port screening on a choke router between my firewall
and my internal network, but now ftp doesn't work.

on the router both ports 20 (ftp-data) and 21 (ftp) are open, but when i
connect to any ftp site, i can't issues any commands (ie. ls). log-on,
however, is working.

i am perplexed, to say the least.

any ideas?

-joav kohn
 landis & staefa