Shared Internet access through ADSL and broadband Routers

At present, ADSL permeate every corner of our lives, whether it is enterprises, Internet cafes, or home users using ADSL to access the Internet, usually, an ADSL line can only support one computer to access the Internet, however, after using a networking device, you can implement an ADSL line to support Internet access shared by multiple computers. Generally, devices that implement the shared networking of ADSL include ADSL Modem, Broadband Router, and switch. A few days ago, a user asked the following question on the Forum: currently, common ADSL Modem has the routing function, while broadband routers also have the routing function, how can I use the ADSL Modem and Broadband Router with the routing function? I will talk about this issue today. If you are a student and use a school Lan, you will not be able to use the ADSL Modem. If you want to build a network, you just need to use a router. If you are an ADSL user, the network must be connected to the ADSL Modem. The ADSL Modem with the routing function can directly connect to the hub or switch to achieve small-scale networking, if the network is fully functional, you must use a combination of ADSL Modem and Broadband Router.

ADSL Modem access with routing function

Network Topology

As shown in, during the networking, one end of the ADSL Modem with the routing function is connected to the telephone line, and the other end is connected to the switch. Currently, ADSL Modem with the routing function is available on the market for NAT, VPN, and other functions. This product has the routing function, and you do not need to purchase a router. It has 10Base-T interface and ATM-25 interface, the computer needs to be equipped with a network card connected to it, can also be directly connected to the user LAN. In addition, it supports the following Internet access methods: IP Router with an external IP address for each computer), IPoA + NAT occupies one or two external IP addresses, and other computers with a fixed internal IP address ).

ADSL Modem + Broadband Router Access

Network Topology

The MODEM has a built-in routing function that allows multiple computers to share the internet. However, its performance and stability are far inferior to that of a Broadband Router. At the same time, a Broadband Router supports multiple computers for simultaneous online games, voice calls, network conferences, MSN, and other network applications, besides, permission control, time period control, built-in hardware firewall, virtual server, DMZ, and other functions are not supported by modem's built-in routing functions. The Broadband Router provides the routing function. Some multi-purpose broadband routers even integrate network printing, URL filtering, VPN, automatic dialing, firewall, and other functions to expand the user's choice.

Analysis Comparison and conclusionVro can translate network addresses, providing powerful network functions at a high price. The dial-up function of ADSL Modem is the main one. Its routing function is only a supplement to the application of ADSL Modem. It only provides common routing and forwarding functions. In addition, it is an important aspect, the security of the ADSL Modem is not very high and is vulnerable to attacks. Through the above analysis, different users can choose different solutions. For ordinary home users, they only need to select the ADSL Modem with a route. This will save a lot of money. For enterprises and Internet cafes, the network features and security requirements are relatively high. If the number of users is large or the traffic is large, it is recommended that you do not save the bandwidth router to ensure the network performance.