Hello.

I've got a Cisco 1700.

Its public address is A.B.C.D (hmmm, secret, isn't it)

Its private address is 10.0.0.254

Then, behind it, i've got a FTP Server which adress is 10.0.0.2.

I need to access FTP from outside, so I need to redirect port 21.

Can someone help me?

PS : I tried to put command

ip nat inside source static 10.0.0.2 21 A.B.C.D 21 extendable

But I can't give port number