Debugging of an old-fashioned gvc adsl Broadband Router

I have an old-fashioned GVC brand of ADSL Broadband Router, which was offered free of charge during Internet access in 2001 (Haha, I am almost a veteran Internet user ). Recently, due to a problem with my friend's ADSL Network, I took out the ADSL Router that I had not used for many years to help.
When I used to access the Internet, I used the enter500 dial-up software to dial up the Internet. In fact, it was a small use. This is because the device is a "Router" with the automatic dialing function. It not only supports the pppoe protocol, but also supports many configuration methods of the Bridge Mode and routing mode.
Unlike some existing ADSL Broadband routers, although the configuration is convenient, there are few protocols supported.
However, because the device is old, I still had several small circles.

1. First, the factory settings of this device are the default rfc1483 Bridge Mode for Internet access. Originally, you only need to create an ADSL dial-up in WindowsXP or Windows2003 to access the Internet. However, to provide Internet services for a batch of machines, you must configure the routing mode to use this Broadband Router. First, delete the rfc1483 connection in the default Bridge Mode Under the WAN port connection. Create a pppoe connection in our own routing mode and click "routing mode ".

2. Click "Configure" and enter parameters.

Enter a proper name in the description, such as myadsl_router;
VPI and VCI input 8 and 35. Note that the two parameters must correspond to the parameters provided by the local ADSL access provider. However, it is okay to enter these two numbers in many places in China.
We recommend that you select "yes" for automatic pppoe connection ";
Select chap for authentication ";
Enter the user name and password provided by the ADSL operator;
For other parameters, use the default value.
Click "Configure" and save the configuration in time.
As shown in the result, you can click Edit to make some parameter adjustments:

3. An IP route will automatically generate a route information. Do not delete it. You can also customize some routing information, but it is generally not required.
4. DHCP servers and DNS relay are configured according to their own needs. This is not the focus of configuration, as long as it is convenient to use.
5. Click "status" to view the myadsl_router statistics. The connection status of pppoe is "established ". This is because we configured automatic dialing ".

Can I access the Internet at this time? No! This is where I was circled. Because most of the current broadband routers, as long as the dial is successful, the customer machine can directly access the Internet by configuring the appropriate IP address, Gateway (LAN port IP address of the router), and DNS server.
It turns out that this router is not as "stupid" (or "intelligent") as most of the current routers "). Although the dial-up is successful, IP Forwarding is not automatically enabled for the LAN port and Wan port. We need to manually configure the NAT service to complete this task. Because it is mentally retarded and troublesome, it seems a bit professional, because configuring Nat in the "Routing and Remote Access" service on Windows Server is similar to this.
Click "Security Settings", add and configure the "security interface", the dial-up interface of the PPP-0 corresponds to external, as the public interface of NAT, maps the LAN interface eth0 with internal (it seems that the vro uses the Linux kernel) as the private interface of Nat. Click "enable Nat to internal interface ". Now the requests sent from the internal host can be converted to the Internet through the NAT address.

Note that you must enable "Security Settings" to enable the NAT Function. After "Security Settings" are enabled, firewall and intrusion detection can be selectively enabled and configured.

This router also looks "professional ":
1. With the firewall function, you can provide network security protection to a certain extent. Only protection configurations for the TCP and UDP protocols and their ports are provided.
2. There is also the "Intrusion Detection" function to prevent common malicious network attacks. That is, the function is simple.
Source: Computer Learning Network-Articles favorites-http://www.why100000.com/_articles
Http://www.why100000.com/show_answer.asp? Autoid = 1577 & Path = _ Internet

Http://www.why100000.com/_internet/doc/GVC%20ADSL.swf

This article from "100,000 why" Computer Learning Network http://www.why100000.com
Author: Zhang Qing (mesh)