#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.
touch /var/lock/subsys/local
#启动memcached
/usr/local/bin/memcached -d -m 1024 -u root -p 11211 -c 256 -P /tmp/memcached.pid

#配置防火墙
/sbin/iptables -F
/sbin/iptables -X
/sbin/iptables -Z
/sbin/modprobe ip_tables
/sbin/modprobe iptable_nat
/sbin/modprobe ip_nat_ftp
#/sbin/modprobe ip_conntrack
/sbin/iptables -P INPUT DROP
/sbin/iptables -P FORWARD ACCEPT
/sbin/iptables -P OUTPUT ACCEPT

#每秒钟最多允许100个新连接
/sbin/iptables -A INPUT -f -m limit --limit 100/sec --limit-burst 100 -j ACCEPT
#防止ping洪水攻击，限制每秒的ping包不超过10个
/sbin/iptables -A FORWARD -p icmp --icmp-type echo-request -m limit --limit 1/s --limit-burst 10 -j ACCEPT
#防止各种端口扫描，将SYN及ACK SYN限制为每秒钟不超过200个，免得把数务器带宽耗尽了
/sbin/iptables -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -m limit --limit 20/sec --limit-burst 200 -j ACCEPT
#放开指定主机的访问，比如是入侵检测的主机IP
#/sbin/iptables -A INPUT -s 122.70.x.x -j ACCEPT
#回路数据当然需要放开了
/sbin/iptables -A INPUT -i lo -j ACCEPT
/sbin/iptables -A OUTPUT -o lo -j ACCEPT
#自已发的自己可以收
/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
#开放80与22端口，不解释
/sbin/iptables -A INPUT -p tcp -m multiport --dport 80,22 -j ACCEPT