This document describes configuring dynamic NAT on a Cisco 2611 XM router to translate a range of private IP addresses to public IP addresses. It defines an IP NAT pool from 172.16.1.3 to 172.16.1.20 named "tcpipguru" and configures the FastEthernet 0/0 interface as the NAT inside interface and Serial 0/0 interface as the NAT outside interface. It also creates an access list to permit traffic from the 192.168.1.0 network.