Config file: /etc/ssh/sshd_config
=> change Port 49152..65535
=> PermitRootLogin no
=> last line UseDNS no
=> PasswordAuthentication yes
##Tell SELinux about the change
semanage port -a -t ssh_port_t -p tcp PORTNUMBER
Commands
Start on boot
systemctl enable sshd
Start now
systemctl start sshd
Status
systemctl status sshd