What is the command to restart the ssh service?

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

Direct execution

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

Or

sevice ssh restart

restart includes baistop and start.

SSH is the abbreviation of Secure Shell, formulated by the Network Working Group of the IETF; SSH is a security protocol based on the application layer and transport layer. SSH is currently the most reliable protocol designed to provide security for remote login sessions and other network services. Using the SSH protocol can effectively prevent information leakage during remote management. SSH was originally a program on UNIX systems and quickly expanded to other operating platforms. SSH, when used correctly, can close holes in your network. SSH clients are available 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 unsafe because they transmit passwords and data in plain text on the network. People with ulterior motives can easily intercept these passwords. and data. Moreover, the security verification methods of these service programs also have their weaknesses, that is, they are easily vulnerable to "man-in-the-middle" attacks. The so-called "man-in-the-middle" attack method is that the "middle-man" pretends to be a real server to receive the data you send to the server, and then pretends to be you and sends the data to the real server. After the data transmission between the server and you is changed by the "middleman", serious problems will arise. By using SSH, you can encrypt all transmitted data, so that "man-in-the-middle" attacks are impossible, and it can also prevent DNS spoofing and IP spoofing. An additional benefit of using SSH is that the transmitted data is compressed, so the transmission speed 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

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