Allowing Internet Users To Access An Internal Resource Server - Huawei WS325 User Manual

WS325 300Mbps Wireless Router
User Guide
6.10 Allowing Internet Users to Access an Internal
Resource Server
Function Overview
Without special settings, Internet users cannot access the Web or FTP servers on a LAN.
By using the network address translation (NAT) function of the router, Internet users are
allowed to access the Web and FTP servers on the LAN.
In addition, the IP addresses used by most users for accessing the Internet are
dynamically assigned by network service providers. Thus, Internet users cannot use
fixed IP addresses to access the resources provided on servers. Through the Dynamic
Domain Name Service (DDNS) function of the router, Internet users can use fixed
domain names to access the resources provided on servers.
After the DDNS function is enabled, the router automatically submits the new IP address
obtained each time to the server of a DDNS provider. On the DDNS server, the IP
address that corresponds to the domain name is updated to the latest IP address. When a
PC on the Internet accesses the domain name, the DDNS server provides the latest IP
address to the PC.
Configuration Example
For example, you deploy a Web server on a LAN. You want Internet users to be able to
access the Web site on the Web server through a fixed domain name. The IP addresses of
the relevant devices are as follows:
The IP address of the LAN interface of the router is 192.168.3.1.

The IP address of the Web server is 192.168.1.166.

You can use the port relay function of the NAT and the DDNS function to implement the
preceding requirement.
Before configuration, you need to complete the following preparations:
Apply for the DDNS to a DDNS provider and obtain the relevant parameters.

Apply for a domain name for the Web site to the institution for managing the domain

names of Web sites.
After the preceding preparations, plan the parameters of the router as follows:
Configure a port mapping rule, and then map the IP address of the Web server

(192.168.1.166:80) to the 80 port of the WAN interface.
Configure the DDNS. Ensure that the router can submit IP addresses to the DDNS

server automatically.
The configuration procedure is as follows:
Step 1
Log in to the Web-based configuration utility.
Step 2
In the navigation tree, choose Advanced > NAT.
The NAT page is displayed.
Step 3 Click Port Mapping.
Issue 01 (2012-10-26)
6 Configuring Frequently Used Functions
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