Cisco OL-4015-08 User Manual page 391

Chapter 18 Network Address Translation
Address Pools
Translation Timeouts
Network Address Translation Rules
OL-4015-08
Click this button to configure or edit address pools. Address pools are used with
dynamic address translation. The router can dynamically assign addresses from
the pool as they are needed. When an address is no longer needed, it is returned
to the pool.
When dynamic NAT is configured, translation entries have a timeout period after
which they expire and are purged from the translation table. Click this button to
configure the timeout values for NAT translation entries and other values.
This area shows the designated inside and outside interfaces and the NAT rules
that have been configured.
Inside Interfaces
The inside interfaces are the interfaces that connect to the private networks the
router serves. NAT uses the Inside designation when interpreting a NAT
translation rule. You can designate interfaces as inside by clicking Designate
NAT interfaces.
Outside Interfaces
The outside interfaces are the router interfaces that connect to the WAN or the
Internet. NAT uses the Outside designation when interpreting a NAT translation
rule. You can designate interfaces as outside by clicking Designate NAT
interfaces.
Original Address
This is the private address or set of addresses that is used on the LAN.
Translated Address
This is the legal address or range of addresses that is used on the Internet or the
external network.
Cisco Router and Security Device Manager Version 2.2 User's Guide
Network Address Translation Rules
18-9