Role of the server:

First, improve the access speed. Because the data requested by the customer is stored in the hard disk of the proxy server, the next time this customer or other customers request the data of the same destination site, it will be directly read from the hard disk of the proxy server, and the hard disk of the proxy server plays a caching role. When many customers visit popular websites, the advantages of proxy server are more obvious.

Second, the server can act as a firewall. Because all users who use the server must access the remote site through the server, you can set corresponding restrictions on the server to filter or block some information. This is the most commonly used method for LAN network management to limit the access range of LAN users, and it is also the reason why LAN users can't browse some websites. If dial-up users use the server, they must also obey the access restrictions of the server unless you don't use this server.

Third, visit some websites that cannot be accessed directly through the server. There are many open servers on the Internet. When the access rights of customers are restricted and the access rights of these servers are not restricted, it is possible for customers to access the target website through the servers. Most domestic colleges and universities use the education network, so they can't go abroad, but they can surf the Internet through the server, which is the reason for the server fever in colleges and universities.

Fourth, security has been improved. No matter in the chat room or browsing the website, the destination website can only know that you are from the proxy server, but your real IP cannot be detected, which improves the safety of users.

Introduction to server classification

A server is a node with a fixed address in the computer room, which provides services for network users. It is an important part of resource sharing. Servers mainly include network servers, print servers, terminal servers, disk servers and file servers.