H3C Technologies H3C SecBlade FW Cards - Manual (Page 21)

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Configuring a DNS mapping
Select Firewall > NAT Policy > Internal Server from the navigation tree to enter the page shown in Figure
10 . In the DNS-MAP field where all DNS mappings are displayed, click Add to enter the Add DNS-MAP
page shown in Figure 12 .
Figure 12 Add DNS-MAP page
Table 9 DNS mapping configuration items
Item Description
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.
Return to Internal server configuration task list .
NAT configuration examples
NAT configuration example
1. Network requirements
As illustrated in Figure 13 , 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.