Hi all, we have a Cisco ADSL ISR 871, the problem we have is that the ip on the ADSL interface is dynamically assigned by BT. BT have also given us a block of 6 routable addresses. So currently we have a static nat something like:
ip nat inside source static 192.168.1.10 172.xx.xx.xx
192.168.1.10 is the server address. This works an email is being delivered to the server on port 25.We have a problem in that we want the router to have the static address so we can terminate vpn, and then forward port 25 onto the server for email.
Any suggestions will be greatly appreciated.
Many thanks,
Craig.