Cisco Systems ASA5515K9, ASA 5500 Configuring Dynamic NAT

30-4
Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter30 Configuring Network Object NAT
Configuring Network Object NAT
Configuring Dynamic NAT
This section describes how to configure network object NAT for dynamic NAT. For more information,
see the “Dynamic NAT” section on page29-8.
Detailed Steps
Command Purpose
Step1 Network object:
object network obj_name
range ip_address_1 ip_address_2
Network object group:
object-group network grp_name
{network-object {object net_obj_name |
host ip_address} |
group-object grp_obj_name}
Example:
hostname(config)# object network TEST
hostname(config-network-object)# range
10.1.1.1 10.1.1.70
hostname(config)# object network TEST2
hostname(config-network-object)# range
10.1.2.1 10.1.2.70
hostname(config-network-object)#
object-group network MAPPED_IPS
hostname(config-network)# network-object
object TEST
hostname(config-network)# network-object
object TEST2
hostname(config-network)# network-object
host 10.1.2.79
To specify the mapped addresses (that you want to translate to),
configure a network object or network object group. A network
object group can contain objects and/or inline addresses.
Note The object or group cannot contain a subnet.
If a mapped network object contains both ranges and host IP
addresses, then the ranges are used for dynamic NAT, and then the
host IP addresses are used as a PAT fallback.
See the “Guidelines and Limitations” section on page30-2 for
information about disallowed mapped IP addresses.
For more information about configuring a network object or group,
see the “Configuring Objects” section on page13-3.
Step2 object network obj_name
Example:
hostname(config)# object network
my-host-obj1
Configures a network object for which you want to configure NAT,
or enters object network configuration mode for an existing network
object.
Step3 {host ip_address | subnet subnet_address
netmask | range ip_address_1 ip_address_2}
Example:
hostname(config-network-object)# subnet
10.1.1.0 255.255.255.0
If you are creating a new network object, defines the real IP
address(es) that you want to translate.