#!/bin/bash

echo "sshd:192.168.1.
sshd:113.204.5.58
sshd:112.126.64.32
sshd:120.220.247.
sshd:106.
sshd:119.
sshd:39.98.95.224 " >> /etc/hosts.allow

echo "sshd:ALL"  >> /etc/hosts.deny

cat /etc/hosts.*

systemctl restart sshd