Iptables

1. !/bin/sh
2. apt-get update
3. apt-get install iptables
4. apt-get install iptables-persistent

iptables -V iptables -I INPUT -p tcp -s 192.168.10.202 -j ACCEPT iptables -A INPUT -p tcp --dport 80 -j ACCEPT iptables -A INPUT -p tcp --dport 22 -j ACCEPT iptables -A INPUT -p tcp --dport 443 -j ACCEPT iptables -A INPUT -p tcp --dport 1912 -j ACCEPT iptables -A INPUT -p tcp --dport 3306 -j ACCEPT iptables -A INPUT -p tcp --dport 5432 -j ACCEPT iptables -A INPUT -p tcp -s 192.168.10.0/24 -j DROP iptables -L

1. iptables-save > /etc/iptables/rules.v4
2. systemctl enable iptables-persistent
3. service iptables-persistent start
4. blok port 22 dari ip 192.168.10.0/24

echo "sshd: 192.168.10.0/255.255.255.0" >> /etc/hosts.deny

1. open port 22 dari ip 192.168.10.202

echo "sshd: 192.168.10.202" >> /etc/hosts.allow

1. open port 22 dari ip 192.168.10.36

echo "sshd: 192.168.10.36" >> /etc/hosts.allow

1. open port 22 dari ip 192.168.10.29

echo "sshd: 192.168.10.29" >> /etc/hosts.allow echo "sshd: 192.168.10.19" >> /etc/hosts.allow