Shulou(Shulou.com)05/31 Report--

This article shows you what SSL refers to. The content is concise and easy to understand. It will definitely brighten your eyes. I hope you can gain something through the detailed introduction of this article.

What is SSL?

The full name of SSL in English is "Secure Sockets Layer" and its Chinese name is "secure socket layer". It is a security protocol based on WEB applications proposed by Netscape. SSL protocol specifies a mechanism to provide data security layering between application protocols (such as HTTP, Telenet, NMTP and FTP) and TCP/IP protocols. It provides data encryption, server authentication, message integrity, and optional client authentication for TCP/IP connections.

The VPN SSL 200 device gateway is suitable for small and medium-sized enterprises to meet the secure access services of their enterprise mobile users, branches, suppliers, partners and other enterprise resources, such as Web-based applications, enterprise mail systems, file servers, Chand S application systems, etc. Enterprises use their own network platform to create an enterprise private network to enhance security. The application of Web VPN client is based on the encryption suite built in the standard SSL browser and the server protocol, that is, authorized users can access the server through the browser to establish a SSL security tunnel as long as they can access the Internet.

SSL VPN uses three client access methods to assist users to securely access any of the company's resources anywhere and at any time:

◇ remote Desktop sharing

◇ Web Browser browser-based access (access to Web applications and file sharing)

Java applets downloaded immediately by ◇ (client / server applications can be accessed)

The main services provided by SSL are:

1) authenticate users and servers to ensure that data is sent to the correct clients and servers

2) encrypt data to prevent data from being stolen

3) maintain the integrity of the data to ensure that the data will not be changed during transmission.

However, the encryption and decryption process requires a lot of overhead of the system, which seriously reduces the performance of the machine. The relevant test data show that the efficiency of data transmission using HTTPS protocol is only 1/10 of that using HTTP protocol. If, for the sake of security and confidentiality, all Web applications of a website are encrypted with SSL technology and transmitted using HTTPS protocol, then the performance and efficiency of the website will be greatly reduced, and this is not necessary, because generally speaking, not all data requires such a high level of security and confidentiality, so we only need to use HTTPS protocol for interactions involving confidential data. In this way, we can have both a fish and a bear's paw. In short, try not to use https where you don't need it.

General applications of SSL:

For online shoppers, the green address bar is the easiest and most reliable way to verify the identity and security of a website. Under the new generation of high-security browsers such as IE7.0, FireFox3.0, Opera 9.5, the browser address bar of websites using extended authentication (EV) SSL certificates will automatically appear green, thus clearly telling users that the website they are visiting is strictly authenticated. In addition, the area adjacent to the green address bar also displays the name of the website owner and the name of the certification CA authority, which all convey the same message to the customer. The website identity is credible, the information transmission is secure, not the phishing site.

What does SSL refer to above? have you learned any knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

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