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Cisco ASA Series CLI Configuration Guide
Chapter 1 Information About NAT
DNS and NAT
Because you want inside users to use the mapped address for ftp.cisco.com (2001:DB8::D1A5:C8E1)
you need to configure DNS reply modification for the static translation. This example also includes a
static NAT translation for the DNS server, and a PAT rule for the inside IPv6 hosts.
Figure 1-25
DNS64 Reply Modification Using Outside NAT
ftp.cisco.com
209.165.200.225
IPv4 Internet
IPv6 Net
Static Translation on Inside to:
2001:DB8::D1A5:C8E1
PAT Translation on Outside to:
209.165.200.230
User:
2001:DB8::1
DNS Server
209.165.201.15
Static Translation on Inside to:
2001:DB8::D1A5:C90F
1
2
7
6
5
4
3
DNS Query
ftp.cisco.com?
DNS Reply
209.165.200.225
DNS Reply Modification
209.165.200.225
2001:DB8::D1A5:C8E1
DNS Reply
2001:DB8::D1A5:C8E1
FTP Request
209.165.200.225
Dest Addr. Translation
209.165.200.225
2001:DB8::D1A5:C8E1
FTP Request
2001:DB8::D1A5:C8E1
Security Device
333368
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: ......