Shulou(Shulou.com)06/03 Report--

In this issue, the editor will bring you orders about what is to restart the ssh service. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

The commands to restart the ssh service are: 1. Restart the ssh service through the [service sshd restart] command; 2. Restart the ssh service with the [systemctl restart sshd.service] command.

Direct execution

/ etc/rc.d/init.d/ssh restart

Or

Sevice ssh restart

Restart includes baistop,start.

SSH is the abbreviation of Secure Shell and was developed by IETF's Network du working Group (Network Working Group). SSH is a security protocol based on the application zhi layer and the dao transport layer. SSH is currently a reliable protocol designed to provide security for remote login sessions and other network services. The use of SSH protocol can effectively prevent information leakage in the process of remote management. SSH was originally a program on the UNIX system, and then rapidly expanded to other operating platforms. When used correctly, SSH can make up for loopholes in the network. The SSH client is suitable for a variety of platforms. Almost all UNIX platforms-including HP-UX, Linux, AIX, Solaris, Digital UNIX, Irix, and others-can run SSH.

Traditional network service programs, such as ftp, pop and telnet, are inherently insecure because they transmit passwords and data in clear text on the network, which can be easily intercepted by people with ulterior motives. Moreover, the security verification method of these service programs also has its weakness, that is, it is vulnerable to the attack of "man-in-the-middle". The so-called "man in the middle" attack is that the "man in the middle" pretends to be a real server to receive the data you send to the server, and then passes the data to the real server by pretending to be you. After the data transfer between the server and you is tampered with by the "middleman", there will be serious problems. By using SSH, you can encrypt all transmitted data so that man-in-the-middle attacks are not possible, and can prevent DNS spoofing and IP spoofing. An added benefit of using SSH is that the data transferred is compressed, so the transfer can be accelerated. SSH has many functions. It can not only replace Telnet, but also provide a secure "channel" for FTP, PoP, and even PPP.

The above is the order for Xiaobian to share with you what is to restart the ssh service. If you happen to have similar doubts, please refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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