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Cisco ASDM User Guide
OL-16647-01
Chapter 21 Configuring NAT
Using Dynamic NAT
Figure 21-16 Different NAT IDs
Multiple Addresses in the Same Global Pool
You can have multiple addresses in the same global pool; the security appliance uses the dynamic NAT
ranges of addresses first, in the order they are in the configuration, and then uses the PAT single
addresses in order. You might want to add both a range of addresses and a PAT address if you need to
use dynamic NAT for a particular application, but want to have a backup PAT rule in case all the dynamic
NAT addresses are depleted. Similarly, you might want two PAT addresses in the pool if you need more
than the approximately 64,000 PAT sessions that a single PAT mapped address supports (see
Figure 21-17).
Web Server:
www.cisco.com
Outside
Inside
Global 1: 209.165.201.3-
209.165.201.10
Global 2: 209.165.201.11
NAT 1: 10.1.2.0/24
NAT 2: 192.168.1.0/24
10.1.2.27
192.168.1.14
Translation
209.165.201.310.1.2.27
Translation
209.165.201.11:4567192.168.1.14
132927