#!/bin/sh # Remove any existing rules # 清除规则 /sbin/iptables -F # 清除用户自定义规则 /sbin/iptables -X # 清除链的计数器 /sbin/iptables -Z # setting default firewall policy # 设置INPUT,OUTPUT,FORWARD链的默认规则 /sbin/iptables -P INPUT DROP /sbin/iptables -P FORWARD DROP /sbin/iptables -P OUTPUT INPUT # setting for loopback interface /sbin/iptables -A INPUT -i lo -j ACCEPT /sbin/iptables -A OUTPUT -o lo -j ACCEPT # setting for icmp /sbin/iptables -A INPUT -p icmp -j ACCEPT /sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT /sbin/iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT # global rules /sbin/iptables -A INPUT -p tcp --dport 22 -j ACCEPT /sbin/iptables -A INPUT -p tcp -s 12.114.114.114/32 -j ACCEPT /sbin/iptables -A INPUT -p tcp --dport 23005 -j ACCEPT /sbin/iptables -A INPUT -p tcp -s 124.23.62.96/32 -m comment --comment "办公室固定ip" -j ACCEPT /sbin/iptables -A INPUT -p tcp -s 192.168.2.0/24 -m comment --comment "IDC机房内网网段" -j ACCEPT /sbin/iptables -A INPUT -p tcp -s 10.0.0.0/24 -m comment --comment "其他机房的内网网段" -j ACCEPT /sbin/iptables -A INPUT -p tcp -s 203.82.23.0/24 -m comment --comment "其他IDC机房的外网网段" -j ACCEPT /sbin/iptables -A INPUT -p tcp --dport 80 -j ACCEPT /usr/sbin/service iptables save