port mapping on Cisco 837

[primate]

Hi,

Our leased line has gone down and won't be up for a few days by the looks of things.

I have setup a Cisco 837 K9 ADSL router on a separate ADSL con as an emergency way to get out onto the internet but I'd like my remote sites to be able to come in and access my Exchange server using OWA for the time being til the leased line comes back up.

So how do I map port 80 traffic through NAT to the Exchange server?

All the other sites used fixed IP's so ideally I'd like to restrict access to these select IP's rather than throwing open what is usually a well hidden Exchange server.

Any help gratefully received!!

 

[gconnect]

setup static NAT redirected to the Exchange Server IP

ip nat inside source static tcp InternalExchange 80 PublicIP 80 extendable 

access-list 101 permit tcp any gt 1023 PublicIP eq 80
.......whatever else
access-list 101 deny ip any any log

int OUTSIDEINT
 ip access-group 101 in

http://www.cisco.com/en/US/tech/tk175/tk15/technologies_configuration_example09186a0080093e51.shtml

may help

-gC-

 

[primate]

Sorry for not getting back, thanks for your help!