Analysis on the characteristics of enterprise using VPN network

Enterprise VPN Network application

Enterprise Information systems need to connect branches across the network, and need to easily keep in touch with mobile employees, preferably with other partners, suppliers, distributors, etc. to establish a close and efficient contact. The traditional networking approach is: Dedicated WAN, dial-up networking, and direct use of the Internet to build the company's Internet or extranet. The following is an analysis of traditional solutions:

1) A dedicated line WAN

maintains a permanent connection to multiple sites through a dedicated circuit (such as a ddn, FR, or ATM connection), and the cost and complexity of connecting a dedicated device through a router or switch can be significant. The advantage of the dedicated WAN is that the communication quality is stable and reliable.

2) dial-up Internet

establishes a connection to the private network as needed via the PSTN or ISDN, typically with NAS (network Access Servers) distributed across one or more hub nodes, and the user dials to NAS. By its authentication, authentication and accounting (AAA), efficiency, speed, etc. are often difficult to satisfy.

3) Direct use of the Internet to build the company's intranet or extranet

The rapid development of the Internet and the enticing low price, indeed, many manufacturers began to adopt this approach, But the direct use of the Internet can only be used for Web, e-mail and other limited applications, and the Internet's innate openness makes security a problem, the company's confidential data once in the Internet transmission, if there is no security, the consequences can be imagined.

VPN Benefits summary

VPN is a new technology in the computer network, which makes the Internet a business tool and offers good prospects for the application of the Internet and extranet. The main goal of VPN technology is to save the communication cost of the enterprise, especially the existing special line, and improve the manageability of the enterprise network and reduce the communication cost of the enterprise. Specifically, VPNs have the following notable advantages:

1) Reduce costs

When you use the Internet, you actually only have to pay for short-distance calls, but you get the effect of long-distance traffic. Therefore, the use of ISPs to establish a VPN, you can save a lot of communication costs, in addition, the VPN can also enable enterprises do not have to invest a large amount of human and material resources to install and maintain WAN devices and remote access devices.

2) Easy to extend

supports a variety of access implementations, and the network is dynamic, you can add or subtract users at any time to facilitate centralized control of access rights. If the enterprise wants to expand the capacity and coverage of VPN, the enterprise does few things, and can be realized immediately; the enterprise simply contracts with the new ISP, establishes the account, or contracts with the original ISP to expand the scope of the service.

3) Be free to network with partners

in the past enterprises want to network with partners, the information technology departments of both sides have to negotiate how to build self-service lines or frame links between the two sides, after having VPN, this kind of consultation is unnecessary, really reach to even even, to break.

4) Full Control of the initiative

VPN enables enterprises to use NSP facilities and services while fully mastering the control of their own networks. For example, companies can give dial-up access to NSP to do, by themselves responsible for the user's identification, access rights, network address, security and network change management and other important tasks.

VPN Network technology compared with the network technology, the advantage is to save the enterprise communication costs, facilitate the enterprise network interconnection and flexible expansion, and improve the manageability of the enterprise network; The disadvantage is that stability does not seem to be as good as a dedicated line network. Tutorial

As far as international VPN applications are concerned, according to a well-known strategic consulting firm TeleChoice's survey of IP services, 130 of the 501 companies surveyed have adopted the VPN,175 home program to build VPNs over the next 18 months. Frost and Sullivan, Cimi, IDC, Infonetics and other investigation companies foresee, 2003 VPN has 7 billion to 29 billion dollars in the huge market.

In the case of domestic VPN applications, with the maturity and popularization of internet technology in China, the stability of Internet communication has been improved, and there have been a large number of financial, telecommunication, postal, energy, transportation, manufacturing, circulation, construction, Users in areas such as health are running their critical business on the Internet. With the continuous deepening of China's information construction, network infrastructure, especially the construction of the Internet infrastructure is ready, the current domestic Internet backbone network construction speed and advanced technology has far exceeded other dedicated line network, and with the telecommunications, power, radio and television and other departments of engineering and technical personnel efforts, Internet access "Last kilometer" problem is also being resolved, access mode more flexible, increasing access speed, access lines more stable, access costs continue to reduce, in this context, VPN products will become a large number of industry users compete for the focus of procurement.