[c-nsp] NAT on a cisco 3745

[Phibee Network Operation Center]

Hi

i am search the command for NAT all traffic at destination of one IP:

My config:

Two port:

FastEthernet 1/0
    Description LAN
    ip address 172.16.1.254 255.255.255.0

FastEthernet 2/0
    Description WAN
    ip address 172.20.8.254 255.255.255.252

ip route 172.20.8.0 255.255.255.252 172.20.8.253

Actually no nat ..

I want that on the Lan interface, he answer at a new IP: 172.16.1.250
and all traffic at destination of 172.16.1.250 are sent to 172.20.8.1

If the user put in SMTP: 172.16.1.250 port 25, 172.20.8.1:25 answer

Anyone know the good command ?

thanks
jerome