need to add ip nat forwarding to 1721

[framewraith]

i have frame relay at our office and a cisco 1721, i am needing to know what the command is to set up ip nat forwarding from the real ip to the internal ip so i can get our mail server running.

if you need any more info let me know thanks.

brandon

 

[itd17]

Brandon,

This should work for you:

ip nat pool poolname 172.16.131.1 172.16.131.25 netmask 255.255.0.0
--nat's inside addresses to addresses in pool

ip nat inside source list 7 pool poolone
--will nat addresses allowed by access list 7 to pool list

ip nat inside source static (private lan) 10.10.10.X 25 (public lan) 172.16.131.X 25 extendable
--SMTP traffic destined for 172.16.131.X 25 nat'ed to 10.10.10.X 25

interface e 0
ip address 10.10.10.254 255.255.255.0
ip nat inside

interface s 0
ip address 172.16.131.254 255.255.255.0
ip nat outside

access-list 7 permit 10.10.10.X 0.0.0.255

ITD17

 

[framewraith]

so i can add these lines with my ips, correct and do i need to put it anywhere specific in the configuration.

thanks