Internal FTP server

[rburke]

Ok,

I am trying to setup an internal FTP server with Passive ports 13005-13007. I get my global IP via DHCP from cable ISP, and I'm using IOS v12.2 on a 2514, my internal IP for the server is 10.10.10.20/24. I know that I will need to open the foloowing ports:
tcp 21
tcp 20
tcp 13005 (tcp or udp?)
tcp 13006 (tcp or udp?)
tcp 13007 (tcp or udp?)

But will I need to open udp ports 20, and 21?
Finally down to the syntax, right now this is what I'm trying:

ip nat inside source static udp 10.10.10.20 20 interface Ethernet0 20
ip nat inside source static udp 10.10.10.20 21 interface Ethernet0 21
ip nat inside source static tcp 10.10.10.20 13007 interface Ethernet0 13007
ip nat inside source static tcp 10.10.10.20 13006 interface Ethernet0 13006
ip nat inside source static tcp 10.10.10.20 13005 interface Ethernet0 13005
ip nat inside source static tcp 10.10.10.20 20 interface Ethernet0 20
ip nat inside source static tcp 10.10.10.20 21 interface Ethernet0 21

And yes, Ethernet 0 goes to the cable modem. any help would be appreciated. Thanks,

Burke