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This article mainly introduces "what are the Linux remote management protocols". In the daily operation, I believe that many people have doubts about what Linux remote management protocols there are. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the questions of "what Linux remote management protocols are there?" Next, please follow the editor to study!

Preface

At present, there are four commonly used remote management protocols, namely RFB, RDP, Telnet and SSH. Remote management protocol refers to the remote management server. Because the server is usually placed in the computer room, users can not directly contact the server hardware, so they can only use remote management. Remote management is actually the process of data transmission (information exchange) between computers (servers) through the network. Just as browsers need HTTP protocol (Hypertext transfer Protocol) to browse web pages, remote management also needs the support of remote management protocols.

Introduction of common remote management protocols

1. RDP (remote desktop protocol) protocol:

Remote Desktop Protocol, which is supported by most Windows systems by default. Remote Desktop Management in Windows system is based on this protocol.

2. RFB (Remote FrameBuffer) protocol:

Graphical remote management protocol, based on which VNC remote management tools are based.

3. Telnet:

Command line interface remote management protocol, which is supported by almost all operating systems by default. The characteristic of this protocol is that the plaintext transmission is used in the data transmission, that is, the data is not encrypted.

4. SSH (Secure Shell) protocol:

Command line interface remote management protocol, which is supported by almost all operating systems by default. Unlike Telnet, this protocol encrypts and compresses data during transmission, so using this protocol to transfer data is both secure and fast.

RDP vs. RFB

Both RDP and RFB protocols allow users to access remote systems through a graphical user interface, but RFB protocols tend to transmit images and RDP protocols tend to transmit instructions:

1. The RFB protocol will draw the window in the video memory on the server side, and then transmit the image to the client side, which only needs to decode and display the resulting image.

2. RDP will hand over the drawing work to the client, and the server needs to make appropriate adjustments according to the display ability of the client.

Therefore, when completing the same operation, the amount of data transmitted using RFB protocol will be larger than that of RDP, while RDP has more stringent requirements on the client than RFB. RFB is suitable for thin clients and RDP is suitable for low-speed networks.

Telnet vs. SSH

Telnet protocol and SSH protocol are both command line remote management protocols, which have common application fields and are often used for remote access to servers.

Compared with Telnet protocol, SSH protocol encrypts data when sending data, and data transmission is more secure, so SSH protocol replaces Telnet protocol in almost all application fields.

In some testing situations where encryption is not required (such as local area network), the Telnet protocol is still often used.

Linux remote management software

Based on the above four remote management protocols, the software of Linux remote management server can be divided into the following three types:

1. Graphics remote management software similar to VNC (based on RFB protocol), such as Xmanager, VNC VIEWER and TightVNC

two。 Command Line Operation Management based on SSH Protocol

3. Similar to Webmin browser-based remote management, this kind of management only provides a simple management window, and the available management functions are limited.

Due to the problems of security and stability, most servers choose the command line interface instead of the graphical management interface, so the command line management mode based on SSH protocol is often used for remote management of Linux servers.

At this point, the study on "what are the Linux remote management protocols" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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