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What does the SOCKS5 protocol mean?

2025-01-19 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >

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This article mainly shows you "what the SOCKS5 protocol refers to". The content is simple and clear. I hope it can help you solve your doubts. Let the editor lead you to study and learn this article "what does the SOCKS5 protocol mean?"

You don't usually need to care about the SOCKS5 protocol, if your machine has a legitimate InternetIP address, or if you use your own modem to dial up the Internet, so you don't need to care about the SOCKS5 protocol.

The SOCKS5 protocol is useful for machines in the internal network when they need to access the outside through some machines in the network that can connect to the external Internet.

1. SOCKS5 is an intermediary protocol between front-end machines and server machines that communicate using the TCP/IP protocol.

It enables front-end computers in the intranet to access servers on the Internet or to make communications more secure.

The SOCKS5 server simulates the behavior of the front end by forwarding the request sent by the front end to the real target server. The front end also communicates with the SOCKS5 through the TCP/IP protocol. The front end sends a request to the SOCKS5 server that would have been sent to the real server, and then the SOCKS5 server forwards the request to the real server. The SOCKS5 server does not make any changes to the request packet itself when it sends a communication request to the real server. After receiving the response from the real server, the SOCKS5 server also forwards it to the front end as is. Therefore, SOCKS5 is a kind of agent protocol, which is suitable for all kinds of application layer protocols based on TCP/IP and has strong versatility. Although it does not know the internal structure of the data it forwards, it can faithfully forward packets and complete the protocol functions that it is intended to achieve.

2. Unlike the SOCKS5 protocol, the HTTP proxy is implemented through the HTTP protocol.

HTTP proxy server software understands the internal structure of the communication packet and needs to modify and transform the program to a certain extent in the process of forwarding. Unlike the HTTP proxy protocol, SOCKS5 is actually a proxy protocol at the transport layer.

It is not difficult to imagine that if you want to design the corresponding proxy protocol expression for each specific application layer protocol, a proxy server will not be able to support so many emerging protocols. Therefore, it can be said that the emergence of SOCKS5 alleviates the dilemma that each specific protocol needs to design a special agent protocol.

However, not all software using TCP/IP-based application protocols can communicate unconditionally through the SOCKS5 server, and the front-end software is required to have an SOCKS5 interface in order to make use of the SOCKS5 proxy server.

A front end that supports the SOCKS5 protocol usually has two operational states:

Direct communication status, no SOCKS5 interface. At this point, the communication can be used for the terminal server.

SOCKS5 status. Send a request to the SOCKS5 server that would have been sent to the final server through the SOCKS5 interface. When the front end initializes the session with the SOCKS5 server, the front end tells the SOCKS5 server the IP address and port information, so the SOCKS5 server can start the communication process with the final server in strict accordance with the requirements of the front end.

The above is all the contents of the article "what does the SOCKS5 Agreement mean?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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