Cisco Router Challenge 75

Unit 7 Introduction to WANs: NAT

Outline

This challenge involves the configuration of NAT for overlapping networks. The objectives of this challenge are to:

• Define an overloaded NAT.
• Define an access-list to identify the traffic to be translated.
• Apply NAT on E0 and S0 interfaces.

Example

> en

# config t

(config)# access-list 7 permit 195.11.220.0 31.255.255.255

(config)# ip nat pool mynatpool 150.122.41.99 150.122.41.150 netmask

255.255.255.0

(config)# ip nat pool yournatpool 140.12.41.99 140.22.41.150 netmask

255.255.255.0

(config)# ip nat inside source list 7 pool mynatpool

(config)# ip nat outside source list 7 pool yournatpool

(config)# int e0

(config-if)# ip nat inside

(config-if)# int s0

(config-if)# ip nat outside