F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices NAT and ALG Configuration Guide-6PW100

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Item Descri
p
tion
Internal Port
Enter the port number of the internal server.
This option is available when 6(TCP) or 17(UDP) is selected for the protocol type. If you
enter 0 in the field, all types of services are provided which indicates a static connection
exists between the internal address and external address.
52BConfiguring DNS mapping
1. From the navigation tree, select Firewall > NAT Policy > Internal Server.
2. In the DNS-MAP area, click Add.
The page for adding DNS-MAP appears.
Figure 15 Adding DNS-MAP page
3. Configure DNS mapping as shown in 245HTable 7.
4. Click Apply.
Table 7 Configuration items
Item Descri
p
tion
Protocol Select the protocol supported by an internal server.
Global IP Specify the external IP address of the internal server.
Global Port Specify the port number of the internal server.
Domain Specify the domain name of the internal server.
53BNAT configuration example
115BNetwork requirements
As shown in 246HFigure 16, a company has three public IP addresses ranging from 202.38.1.1/24 to
202.38.1.3/24, and a private network segment of 10.110.0.0/16. Specifically, the company requires
that the internal users in subnet 10.110.10.0/24 can access the Internet through NAT.