防火墙脚本

#!/bin/bash
iptables -F
iptables -X
iptables -P INPUT DROP
iptables -P OUTPUT ACCEPT

#ssh accept all
#iptables -A INPUT -p tcp --dport 22 -j ACCEPT
#ssh accept 192.168.1.180
iptables -A INPUT -s 192.168.1.180 -p tcp --dport 22 -j ACCEPT
#web
iptables -A INPUT -p tcp --dport 80 -j ACCEPT
#ping
#iptables -A INPUT -p icmp -j ACCEPT
iptables -A INPUT -s 192.168.1.180 -p icmp -j ACCEPT
#allow loopback
iptables -A INPUT -i lo -p all -j ACCEPT
#deny
iptables -A OUTPUT -p tcp --sport 31337 -j DROP
iptables -A INPUT -p tcp --dport 31337 -j DROP