Designate Nat Interfaces; Translation Timeout Settings - Cisco ROUTER-SDM-CD User Manual

Network Address Translation Rules

Designate NAT Interfaces

Interface
Inside (trusted)
Outside (untrusted)

Translation Timeout Settings

DNS Timeout
ICMP Timeout
Cisco Router and Security Device Manager 2.5 User's Guide
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Use this window to designate the inside and outside interfaces that you want to
use in NAT translations.
interpreting translation rules, because translations are performed from inside to
outside, or from outside to inside.
Once designated, these interfaces are used in all NAT translation rules. The
designated interfaces appear above the Translation Rules list in the main NAT
window.
All router interfaces are listed in this column.
Check to designate an interface as an inside interface. Inside interfaces typically
connect to a LAN that the router serves.
Check to designate an interface as an outside interface. Outside interfaces
typically connect to your organization's WAN or to the Internet.
When you configure dynamic NAT translation rules, translation entries have a
timeout period after which they expire and are purged from the translation table.
Set the timeout values for various translations in this window.
Enter the number of seconds after which connections to
Enter the number of seconds after which Internet Control Message Protocol
(ICMP) flows time out. The default is 60 seconds.
Chapter 26
NAT uses the inside and outside designations when
Network Address Translation
DNS servers time out.
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