ssh: connect to host 172.31.8.132 port 22: Connection refused

use ssh When connecting a box, the following error is prompted

ssh [email protected]

ssh: connect to host 172.31.8.132  port 22: Connection refused

Generally speaking, this problem is because openssh-server No installation , But I checked and found openssh-server, And it has also started , After checking /etc/ssh/sshd_config file

vim /etc/ssh/sshd_config

The cause of the problem was found to be the default port 22 Someone else changed it to 2222, You can change the port number back to... By modifying the above file 22,

Or do not change the port number , that ssh Specify the port number when connecting 2222 It's fine too , If it is a command line connection , Then specify the port number with the following command .

ssh -p 2222  [email protected]

If it is xshell Wait for tools to connect , Then the default port number will be when creating a new connection 22 Change it to 2222 that will do .

reference ：

ubuntu allow root user ssh Remote login _ Chen Hong Wei's blog -CSDN Blog