DPtech FW1000 Series Firewall Products User Configuration Guide
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4.7 DS_LITE_NAT
Because of IPv4 address exhaustion, DS _Lite was designed to let an Internet service provider omit the deployment
of any IPv4 address to the customer's Customer-premises equipment (CPE). Instead, only global IPv6 addresses are
provided.
4.7.1 DS_LITE_NAT
To enter the DS_LITE_NAT page, you can choose
Basic> Network > Firewall > DS_LITE_NAT
from
navigation tree, as shown in Figure4-18.
Figure4-18
DS_LITE_NAT
4.7.2 Address pool
To enter the address pool page, you can choose
Basic> Network > Firewall > Address pool
from navigation tree,
as shown in Figure4-19.
Figure4-19
Address pool
4.8 ALG configuration
Application level gateway (ALG) is mainly to process the application layer packets. Usually, NAT only translate the
IP address and port number carried in packet header while it doesn’t translate the fields in the payload of application
layer. NAT can’t effectively translate the IP address and port number in the payload of some special protocols,
which may result problems.
