Cisco ASA Series Cli Configuration Manual page 779

Chapter 1 Information About NAT
Figure 1-26
the outside server. In this case, when an inside user performs a reverse DNS lookup for 10.1.2.56, the
ASA modifies the reverse DNS query with the real address, and the DNS server responds with the server
name, ftp.cisco.com.
Figure 1-26
Reverse DNS Query Modification
10.1.2.56
Where to Go Next
To configure network object NAT, see
To configure twice NAT, see
shows an FTP server and DNS server on the outside. The ASA has a static translation for
PTR Modification, DNS Server on Host Network
PTR Record
3 ftp.cisco.com
Reverse DNS Query
209.165.201.10
2
209.165.201.10
1
Reverse DNS Query
10.1.2.56?
Chapter 34, "Configuring Twice NAT."
ftp.cisco.com
209.165.201.10
Static Translation on Inside to:
10.1.2.56
DNS Server
4
Outside
Security
Device
Inside
User
10.1.2.27
Chapter 33, "Configuring Network Object NAT."
Cisco ASA Series CLI Configuration Guide
Where to Go Next
1-33