限制端口
#!/bin/bash
iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
iptables -F
iptables -P INPUT DROP
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -p icmp -m icmp --icmp-type any -j ACCEPT ##ping
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -m multiport -p tcp --dport 22,80 -j ACCEPT ##开放端口
iptables -A INPUT -m iprange --src-range 192.168.xx.xx-192.168.10.xx -j ACCEPT ##接受哪些IP
iptables -A INPUT -s 114.80.xx.xx-j ACCEPT
iptables -A INPUT -s 114.80.xx.xx -j ACCEPT
iptables -A INPUT -j REJECT --reject-with icmp-host-prohibited ##ping