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This article mainly explains the basic knowledge and main functions of HTTP agent. The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn the basic knowledge of HTTP agent and the introduction of main functions.

1. HTTP protocol

Hypertext transfer protocol, HTTP security protocol, is the most commonly used and simplest communication protocol when transmitting information content on Internet. Some LAN protocols are restricted and users are only allowed to browse external URLs through the HTTP protocol. Access through the http proxy client, mainly through the proxy browser to exchange visits to the web page, its port number is generally 800.8080p3128 and so on.

2. Anonymity of HTTP agents

The anonymity of the HTTP agent refers to the anonymous security of the agent applied directly without technical means. Explanation: the anonymity here is actually different from the anonymity of other servers such as the FTP server. Whether anonymous or not, the server proxy can be used as a "proxy". It's just that anonymous proxies can guarantee that the accessed party can not overdo the traceability of IP, which is more secure to some extent. It is not a key indicator, nor is it the opinion of the benevolent, the key is the wisdom of the wise.)

3. HTTPCONNECT agent program

For HTTP agents, many people have a correct understanding of the misunderstanding, it must be specified that HTTP agents are not necessarily only HTTP agents.

HTTPCONNECT proxy server is a proxy server that allows users to create a TCP to connect to all ports. It can not only be used as a HTTP, but also include FTP,IRC,RM streaming services, etc., and even scan and attack.

4. The difference between different types of agents

(1) completely anonymous agents

Don't change the requestfields to make the server look as if there is a real user browser to access it. Of course your real IP is hidden. Your network administrator will not think that you are using an agent.

(2) ordinary anonymous user agent

You can hide the real IP address, but you can modify the requestfields so that you can consider applying a proxy, but in general, this is unlikely. But don't be misled by its name, it may be more secure than an all-anonymous proxy, and some agents remove some of your information (such as stealthmode is like a firewall) so that your operating system and browser version cannot be detected on the server side.

(3) transparent agent (simple agent)

Imitate your request and pass the real IP address.

5. The main functions of HTTP agent

(1) break through the restriction of IP access and enter foreign websites. For example: education network, 169 network and other network users can access foreign websites through agents.

(2) access to the internal resources of some units or groups, such as the FTP of a school (as long as the proxy address is within the scope of access to the resources), and use the free proxy server of the address segment within the education network, which can be used to download and upload various types of FTP files for use in the education network, and can provide various types of services, such as data query and sharing.

(3) to break through the IP blockade of China Telecom, many websites of China Telecom users are restricted to visit. This restriction is artificial, and different operators have different blockades on addresses. So you can try a foreign proxy server when you can't access it.

(4) to improve the access speed, the proxy server usually sets up a large hard disk buffer, and when external information passes through, it will save it in the buffer, and when other users access the same information again, it will directly extract information from the buffer and send it to the user to improve the access speed.

(5) hide the real IP, and Internet users can also use this way to hide their IP from attacks.

Thank you for your reading. the above is the content of "introduction of basic knowledge and main functions of HTTP Agent". After the study of this article, I believe you have a deeper understanding of the basic knowledge of HTTP agent and the introduction of main functions, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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