CentOS 7.5 modify the SSH port number

1、cd /etc/ssh

2、cp sshd_config sshd_config_20190901

3、vi sshd_config

Find Port, change the port number (can simultaneously support multiple ports)

Save and exit

4、sudo semanage port -a -t ssh_port_t -p tcp 2222

5、systemctl restart sshd

6、systemctl status sshd.service

7、firewall-cmd --zone=public --add-port=2222/tcp --permanent

8、firewall-cmd --reload