Ipv6 Ipv6 Proxy Server To Open The Door To Enter - A Server-it Industry - Low-voltage Power Cable

Mention IPv6, I believe most people know?? But it is basically limited to "know" it

. From the mid 90s of last century after the birth, although the discussion on the topic of IPv6 has been hot, but the majority of the users, but few could really use the IPv6 applications up!

The problem lie? The one hand, the application of IPv6 itself small; but on the other, or even more crucial is the traditional IPv4 applications and IPv6 Network Interoperability between not make IPv6 network and application form islands one by one: the traditional IPv4 users do not have access, the development of new IPv6 network is not up ... ...

The root causes of this situation, in fact, was not compatible IPv6 protocol. 51CTO.com been reported previously, the Internet Engineering Task Force (IETF) admitted that they committed in the IPv6 standards, a fatal error, is not provided on the existing Internet protocol IPv4 for backward compatibility. Internet Society (InternetSociety), chief Internet technology officer LeslieDaigle said: "The lack of backward compatibility is the real IPv4 (IPv6) is only the most serious weakness. Had reason to do so, but the reality is that no one wants a friend also stay in their own time to upgrade to IPv4 IPv6. "IPv6 senior architect BlueCoat United States, security experts told 51CTO.com interview Mr Lee said:" The lack of real applications for IPv6-oriented solutions, only to force enterprises to consider in the end is the use of appropriate relocation program or to conduct a comprehensive upgrade. "huge and comprehensive upgrade costs, enough to make most companies look and stop.

U.S. BlueCoat senior architect, security expert Li Ching

In other words, the current key issues is how to solve the users from IPv4 to IPv6 transition and convergence between the issues. Mr Lee said: "To smooth the shift IPv6, requires a non-beating, and safe migration of business applications and services strategy." Well, this strategy is it?

Answer is yes. This is the IPv6 Proxy Equipment.

IPv6 proxy principle Called IPv6 proxy, of course, is in the IPv4 and IPv6 networks as a proxy, the transition and conversion of special equipment. Mr Lee explained that the intelligence of IPv6 proxy, the user without the need for address translation, do not have to rewrite applications or upgrade IT Infrastructure, applications can be realized, services and data in the IPv4 and IPv6 environments smooth transition.

In other words, IPv6 proxy set up the client and Server Between whether the client is IPv4 or IPv6, IPv6 agent with adaptive equipment can be Communicate ; The other hand, the Server No exception. Thus, when a traditional IPv4 client to IPv6 server application sends a request, IPv6 proxy IPv4 applications will be able to intercept the request, and then converted to IPv6 requests to the server; the other hand, the server returns the information, but also through the IPv6 proxy transit, eventually returned to the client. (See example figure below)

Figure 1 Achieve this conversion work? Mr Lee explained that on the smart BlueCoat IPv6 proxy, the TCP protocol is used in the suspension and re-packaging. As we all know, TCP protocol is working in the fourth layer on top of IP protocol agreement, while other applications are built on TCP or UDP protocol above. Blue CoatIPv6 proxy issued in the TCP receive client request to the one stop, and then analyze the application layer protocol request, and then access and security policies that meet the request of the new agreement with the package, a request to the server, while clients end of normal response.

Thus, the client view, the issue of requests and responses are normal, without any address translation and so on, everything is transparent. And on the server, the client seems to send a request to meet the IPv6 protocol itself. For existing enterprise IPv4 applications, IPv6 proxy device can direct spend through faster, more secure IPv6 backbone network, and then use IPv6 applications more services under the agreement.

Figure 2 IPv6 proxy challenge Proxy using IPv6, IPv4 and IPv6 seems to be between the gully filled. But the company may ask: conversion between the two agreements, there is no safety factor? Moreover, an increase of such a device, the network will not affect the normal transmission speed and quality? Will not affect existing applications? Will not will greatly increase the network cost?

Mr Lee explained that on the IPv6 agent equipment, indeed faced with the challenge. Sum them up into four areas, you can use "SUVA" to represent.

First of all, content security control (Security), that is, how to use IPv6 when the proxy to ensure that enterprise applications meet the business management system and compliance, but also eliminating the need for re-certification of existing security policy.

Followed by availability (Usability), product application is convenient, reliable, original applications, transparent, convenient,

Third is the application of visibility (Visibility), which is very high in terms of IPv6 proxy request, it can not be on the proxy through the application of visual management to help network administrators on the application of flow and a comprehensive understanding of Web content and control, thus achieving an effective application performance monitoring and adjusting network resources.

Finally, application layer protocol and business choose to accelerate (Acceleration). Acting as an intelligent device, IPv6 proxy should also bear the network and application acceleration capabilities for enterprise applications that can best help.

Should be said that these challenges also contribute to the development of IPv6 proxy important reason for the relative difficulty. Mr Lee explained that, BlueCoat first-generation IPv6 proxy R & D spent five years on. The key point of their success is the intelligent IPv6 proxy access to client request, not a simple address translation, but a number of management, including the application of the analysis, auditing and other security management, including content caching strategies such as accelerated . Only in the request meets the enterprise security management regulations, the proxy request will be issued, and optimization.

IPv6 conversion market conditions

Present, IPv6 backbone network has been in China, Japan

by: gaga

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