How to remotely log in to SSH in Linux system

Today, I will talk to you about how to remotely log in to SSH on the Linux system. Many people may not know much about it. In order to make you understand better, the editor has summarized the following for you. I hope you can get something according to this article.

SSH (Secure Shell) is a set of protocol standards, which can be used to achieve secure login and secure data transmission between two machines. The principle of ensuring data security is asymmetric encryption. So how does the Linux system log in remotely using ssh?

Common format: ssh [- l login_name] [- p port] [user@] hostname for more details can be viewed with ssh-h.

Give an example

Do not specify a user:

Ssh 192.168.0.11

Specify the user:

Ssh-l root 192.168.0.11

Ssh root@192.168.0.11

If you have modified the ssh login port, you can:

Ssh-p 12333 192.168.0.11

Ssh-l root-p 12333 216.230.230.114

Ssh-p 12333 root@216.230.230.114

In addition, modify the configuration file / etc/ssh/sshd_config, you can change the ssh login port and disable root login. Changing the port prevents it from being scanned by the port.

Edit the configuration file:

Vim / etc/ssh/sshd_config

Find # Port 22, remove the comments, and modify it to a five-digit port:

Port 12333

Find # PermitRootLogin yes, remove the comments, and modify it to:

PermitRootLogin no

Restart the sshd service:

Service sshd restart

After reading the above, do you have any further understanding of how the Linux system logs in to SSH remotely? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.