Configuration Guide Configuring NAT
The egress router connects both the intranet and the extranet.
Corresponding
Protocols
Configure an inside interface and an outside interface for NAT.
Configure static inside source address translation on the egress router.
10.2.2 External Users' Access to an Intranet Server
Scenario
A PC is located in an extranet while a server (such as a Web server) is located in an intranet, as shown in Figure 10-2. In
view of IP address depletion, only one public IP address is allocated to the entire campus network. An egress router
belongs to the intranet, and connects to the extranet. The Network Address and Port Translation (NAPT) function is
required on the egress router to enable the PC to access the intranet server; that is, port mapping applies to the Web
service port.
Figure 10-2
The egress router connects both the intranet and the extranet.
The server is deployed in the intranet.