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Cisco ASA Series Firewall CLI Configuration Guide
Chapter 5 Configuring Twice NAT
Configuration Examples for Twice NAT
Configuration Examples for Twice NAT
This section includes the following configuration examples:
• Different Translation Depending on the Destination (Dynamic PAT), page 5-25
• Different Translation Depending on the Destination Address and Port (Dynamic PAT), page 5-27
Different Translation Depending on the Destination (Dynamic PAT)
Figure 5-1 shows a host on the 10.1.2.0/24 network accessing two different servers. When the host
accesses the server at 209.165.201.11, the real address is translated to 209.165.202.129:port. When the
host accesses the server at 209.165.200.225, the real address is translated to 209.165.202.130:port.
Figure 5-1 Twice NAT with Different Destination Addresses
Step 1 Add a network object for the inside network:
ciscoasa(config)# object network myInsideNetwork
ciscoasa(config-network-object)# subnet 10.1.2.0 255.255.255.0
Step 2 Add a network object for the DMZ network 1:
ciscoasa(config)# object network DMZnetwork1
ciscoasa(config-network-object)# subnet 209.165.201.0 255.255.255.224
Step 3 Add a network object for the PAT address:
ciscoasa(config)# object network PATaddress1
ciscoasa(config-network-object)# host 209.165.202.129
Server 1
209.165.201.11
Server 2
209.165.200.225
DMZ
Inside
10.1.2.27
10.1.2.0/24
130039
209.165.201.0/27 209.165.200.224/27
Translation
209.165.202.12910.1.2.27
Translation
209.165.202.13010.1.2.27
Packet
Dest. Address:
209.165.201.11
Packet
Dest. Address:
209.165.200.225