| [ LiB ] |   |
Practical Exercise 12-1: Dynamic NAT Using an Outside Source List
In some situations you might need to use dynamic NAT instead of static NAT. One such situation is when you receive only a single routable IP address from your ISP. In this case, you need to configure an access list and associate it with an ip nat command to translate the IP addresses. In this Practical Exercise, you will configure the topology shown in Figure 12-5 using the ip nat outside source list command. This allows traffic from the host at 10.10.1.100 to reach the address of R7's Loopback 0 interface.
Figure 12-5. Outside Source List Topology
You will assign an access list on R4 so that any packet sourced from 10.10.1.100 to 10.10.7.7 will be translated from a NAT pool to 172.16.48.250. You need to set your routing up so that none of the packets will be dropped, regardless of the address in use.
| [ LiB ] | |