Rule for Filezilla

I have a filezilla server running on my pc. I am befind a LAN firewall as well as have Comodo on my personal system. So all of the source IP traffic for the FTP connections are from our LAN gateway. And the destination IP is always my pc IP address. I am trying to set up rules for FTP communication, but i keep violating rule # 5 in the Network Control Rules (Block and Log). The problems comes in when communication is going on during the FTP session the source and destination ports jump all over the map. And Comodo does not send up any flags for tailor making rules from the learing mode.

Any thoughts or suggestions? I thought the destination port would be limited to port 21, but that port jumps around as well during communication.