What are the differences between Http proxy protocol, Https proxy protocol and Socks5 proxy protocol?

With the rapid development of the Internet and the promotion of the big data era, cross-border business has ushered in a blowout period. I believe that many friends have to deal with overseas agents frequently, but newbies who have just entered the industry are often confused by the agency agreement.

Therefore, I will introduce to you the characteristics and differences of the three major overseas proxy protocols (Http, Https, Socks5) to help you quickly sort them out!

1. What is an agent?

In fact, many people still don't know what a proxy means. A proxy is actually a special network service. In layman's terms, a proxy is a transfer between the front-end/client and the external network. We can connect between the front-end and the server through a proxy. Therefore, a proxy can provide users with security, anonymity and functionality, and can well protect the privacy of users. Using a proxy can also solve the problem of accessing difficult websites, meet the needs of connecting to the internal network from the external network, and increase the connection speed.

2. What is http/https?

At present, http/https protocol is still the most widely used proxy on the Internet. I believe that when you visit major websites, you can also see this protocol added before www in the URL. Http is the abbreviation of Hypertext Transfer Protocol, which is a protocol based on TCP/IP protocol to transmit data. Generally, the client directly initiates the request and the server responds.
The advantage is that it is very fast and simple, but because it uses plain text for transmission, it is less secure. The extra "s" in https compared to http is the abbreviation of the encrypted transmission security protocol SSL, which can be regarded as the secure version of http. The information transmission of http is not encrypted (using plain text), so it is not secure enough. In this case, https with SSL can be used to ensure the security of data. However, https also has its shortcomings. First, the loading speed is slow. Second, the use of SSL requires a certain cost, and https takes up a lot of server resources.

3. What is the socks5 protocol?

First of all, we need to understand the role of the socks proxy protocol: For the security of the enterprise network, a firewall is usually set up, and the firewall will block the connection between the front end and the external network, so a socks proxy is needed as a transit. Socks runs at the fifth layer of the OSI seven-layer protocol, that is, the session layer, and socks5 is the latest version of the socks protocol, which can implement high-anonymous proxy. Compared with socks4, socks5 adds an authentication mechanism, and identity authentication can be set to establish a complete connection. It also plays a transit role between the front end and the server that use the Transmission Control Protocol (TCP) protocol/IP protocol to communicate, allowing the front end in the intranet to access the server on the external network, making the connection more flexible and secure, the possibility of error will become smaller, and the performance will be better.