DPX8000 Series Deep Service Switching Gateway User
Configuration Guide Firewall Service Board Module v1.0
8
1.4 NAT
1.4.1
Introduction to NAT
NAT (Network Address Translation) provides a way of translating the IP address in an IP packet header to another
IP address. In practice, NAT is primarily used to allow users using private IP addresses to access public networks.
With NAT, a smaller number of public IP addresses are used to meet public network access requirements from a
larger number of private hosts, and thus NAT effectively alleviating the depletion of IP addresses.
1.4.2
Source NAT
To enter the source NAT page, you choose
Firewall module > NAT > Source NAT
, as shown in Figure1-7.
Figure1-7
Source NAT
Table1-5 describes the details of source NAT configuration.
Table1-5
Source NAT configuration
Item
Description
ID
Displays the serial number of source NAT policy.
Out interface
Select the out interface for source NAT policy.
Source IP
Configure the source IP segment for the source NAT policy.
Destination IP
Configure the destination IP segment for the source NAT policy.
Service
Configure the service scope of the source NAT policy, including all, service
group, user-defined service object and the pre-defined service object.
Public IP address pool
Configure the public address pool of the source NAT policy.
Operation
Click the
copy icon and the
delete icon to do the operations.
To configure the source NAT configuration:
Click the
copy button of source NAT configuration
Configure the outbound interface of source NAT policy