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1-25
Cisco ASA Series CLI Configuration Guide
Chapter 1 Configuring Twice NAT
Configuration Examples for Twice NAT
•
Different Translation Depending on the Destination Address and Port (Dynamic PAT), page 1-26
Different Translation Depending on the Destination (Dynamic PAT)
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 1-1
Twice NAT with Different Destination Addresses
Step 1
Add a network object for the inside network:
hostname(config)#
object network myInsideNetwork
hostname(config-network-object)#
subnet 10.1.2.0 255.255.255.0
Step 2
Add a network object for the DMZ network 1:
hostname(config)#
object network DMZnetwork1
hostname(config-network-object)#
subnet 209.165.201.0 255.255.255.224
Step 3
Add a network object for the PAT address:
hostname(config)#
object network PATaddress1
hostname(config-network-object)#
host 209.165.202.129
Step 4
Configure the first twice NAT rule:
hostname(config)#
nat (inside,dmz) source dynamic myInsideNetwork PATaddress1 destination
static DMZnetwork1 DMZnetwork1
Because you do not want to translate the destination address, you need to configure identity NAT for it
by specifying the same address for the real and mapped destination addresses.
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
209.165.202.129
10.1.2.27
Translation
209.165.202.130
10.1.2.27
Packet
Dest. Address:
209.165.201.11
Packet
Dest. Address:
209.165.200.225
Summary of Contents for 5505 - ASA Firewall Edition Bundle
Page 28: ...Glossary GL 24 Cisco ASA Series CLI Configuration Guide ...
Page 61: ...P A R T 1 Getting Started with the ASA ...
Page 62: ......
Page 219: ...P A R T 2 Configuring High Availability and Scalability ...
Page 220: ......
Page 403: ...P A R T 2 Configuring Interfaces ...
Page 404: ......
Page 499: ...P A R T 2 Configuring Basic Settings ...
Page 500: ......
Page 533: ...P A R T 2 Configuring Objects and Access Lists ...
Page 534: ......
Page 601: ...P A R T 2 Configuring IP Routing ...
Page 602: ......
Page 745: ...P A R T 2 Configuring Network Address Translation ...
Page 746: ......
Page 845: ...P A R T 2 Configuring AAA Servers and the Local Database ...
Page 846: ......
Page 981: ...P A R T 2 Configuring Access Control ...
Page 982: ......
Page 1061: ...P A R T 2 Configuring Service Policies Using the Modular Policy Framework ...
Page 1062: ......
Page 1093: ...P A R T 2 Configuring Application Inspection ...
Page 1094: ......
Page 1191: ...P A R T 2 Configuring Unified Communications ...
Page 1192: ......
Page 1333: ...P A R T 2 Configuring Connection Settings and QoS ...
Page 1334: ......
Page 1379: ...P A R T 2 Configuring Advanced Network Protection ...
Page 1380: ......
Page 1475: ...P A R T 2 Configuring Modules ...
Page 1476: ......
Page 1549: ...P A R T 2 Configuring VPN ...
Page 1550: ......
Page 1965: ...P A R T 2 Configuring Logging SNMP and Smart Call Home ...
Page 1966: ......
Page 2059: ...P A R T 2 System Administration ...
Page 2060: ......
Page 2098: ...1 8 Cisco ASA Series CLI Configuration Guide Chapter 1 Troubleshooting Viewing the Coredump ...
Page 2099: ...P A R T 2 Reference ...
Page 2100: ......