Código
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A INPUT -s 10.11.0.xx -j ACCEPT #VPN traffic iptables -A INPUT -s ip -j ACCEPT # CTF network iptables -A INPUT -m state --state NEW -p tcp --dport 80 -j ACCEPT iptables -A INPUT -m state --state NEW -p tcp --dport 22 -j ACCEPT iptables -A INPUT -m state --state NEW -p tcp --dport 9050 -j ACCEPT iptables # routing the traffic to certain application via port or the best to achieve it iptables -A INPUT -j DROP # or REJECT service iptables save service iptables restart