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Cisco Router and Security Device Manager Version 2.2 User’s Guide
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Chapter18 Network Addres s Translation
Network Address Translation Rules
Address Pools
Click this button to configure or edit address pools. Address pools are used with
dynamic address translation. The router can dynamically assig n addresses from
the pool as they are needed. When an address is no longer needed, it is returned
to the pool.
Translation Timeouts
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.
Network Address Translation Rules
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 conne ct 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.