Basic PAT config help

jksnook · ‎10-11-2007

I am attempting to setup a basic PAT configuration on a 871. Is it possible to do this on a router that has a dynamic external IP address? Can anyone give me some feedback on how to make a PAT entry to send a specific port to an internal host?

lgijssel · ‎10-11-2007

Basically, there is not much too it:

int fa0

ip nat inside

int fa1

ip nat outside

ip nat inside source static tcp 10.1.1.1 80 80 extendable

The only catch is that you need to reconfigure the router when the dynamic ip changes.

regards,

Leo

jksnook · ‎10-11-2007

So there is no way to set this up one time and not have to re-configure the nat statement everytime the dynamic IP changes?

roneng · ‎10-12-2007

Hi

if you are using dialer, you can do it with "overload" and it doesnt matter if the ip changes:

access-list 101 permit ip 192.168.1.0 0.0.0.255 any

ip nat inside source list 101 interface Dialer1 overload

and of course dont forget the nat inside outside commands.