CCNA Routing and Switching Portable Command Guide, Third Edition

Chapter 27. Network Address Translation

This chapter provides information and commands concerning the following topics:

▪ Private IP addresses: RFC 1918

▪ Configuring dynamic NAT: One private to one public address translation

▪ Configuring Port Address Translation (PAT): Many private to one public address translation

▪ Configuring static NAT: One private to one permanent public address translation

▪ Verifying NAT and PAT configurations

▪ Troubleshooting NAT and PAT configurations

▪ Configuration example: PAT

▪ Private IP Addresses: RFC 1918

The following table lists the address ranges as specified in RFC 1918 that can be used by anyone as internal private addresses. These will be your “inside-the-LAN” addresses that will have to be translated ...