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Cisco ASA Series Firewall ASDM Configuration Guide
Chapter 6 Configuring NAT (ASA 8.2 and Earlier)
Using Dynamic NAT
Using Dynamic NAT
This section describes how to configure dynamic NAT, including dynamic NAT and PAT, dynamic policy
NAT and PAT, and identity NAT.
Policy NAT lets you identify real addresses for address translation by specifying the source and
destination addresses. You can also optionally specify the source and destination ports. Regular NAT can
only consider the source addresses, and not the destination. See the “Policy NAT” section on page 6-11
for more information.
This section includes the following topics:
• Dynamic NAT Implementation, page 6-17
• Managing Global Pools, page 6-22
• Configuring Dynamic NAT, PAT, or Identity NAT, page 6-23
• Configuring Dynamic Policy NAT or PAT, page 6-25
Dynamic NAT Implementation
This section describes how dynamic NAT is implemented, and includes the following topics:
• Real Addresses and Global Pools Paired Using a Pool ID, page 6-18
• NAT Rules on Different Interfaces with the Same Global Pools, page 6-18
• Global Pools on Different Interfaces with the Same Pool ID, page 6-18
• Multiple NAT Rules with Different Global Pools on the Same Interface, page 6-19
• Multiple Addresses in the Same Global Pool, page 6-20
• Outside NAT, page 6-21
• Real Addresses in a NAT Rule Must be Translated on All Lower or Same Security Interfaces,
page 6-22