DDoS deflate其实非常简单,下面是详细的安装和配置步骤：
1.安装 DDoS deflate
wget http://www.inetbase.com/scripts/ddos/install.shchmod 0700 install.sh./install.sh
//弹出版权信息后,在SSH下键入 q , 即可退出版权信息。
2.配置 DDoS deflate .
安装成功后会提示Config file is at /usr/local/ddos/ddos.conf,所以你可以在ddos.conf里进行简要配置.
# vim /usr/local/ddos/ddos.conf
##### Paths of the script and other filesPROGDIR=”/usr/local/ddos”PROG=”/usr/local/ddos/ddos.sh”IGNORE_IP_LIST=”/usr/local/ddos/ignore.ip.list” //白名单CRON=”/etc/cron.d/ddos.cron”APF=”/etc/apf/apf”IPT=”/sbin/iptables”—————————————————————————-##### frequency in minutes for running the script##### Caution: Every time this setting is changed, run the script with –cron##### option so that the new frequency takes effectFREQ=1//ddos.sh执行的频率,单位是分钟,搭配crontab来执行.如果你更改了该设置,请执行 /usr/local/ddos/ddos.sh –cron—————————————————————————-##### How many connections define a bad IP? Indicate that below.NO_OF_CONNECTIONS=150//当哪个IP的连接数达到150就加入黑名单；查看连接数你可以执行#netstat -ntu | awk ‘{print $5}’ | cut -d: -f1 | sort | uniq -c | sort -n—————————————————————————-##### APF_BAN=1 (Make sure your APF version is atleast 0.96)##### APF_BAN=0 (Uses iptables for banning ips instead of APF)APF_BAN=0//一般情况下你是使用iptables来做防火墙,所以这里你需要将 APF_BAN的值改为0.—————————————————————————-##### KILL=0 (Bad IPs are’nt banned, good for interactive execution of script)##### KILL=1 (Recommended setting)KILL=1//将非法的的IP加入iptables的INPUT链中,DROP之.—————————————————————————-##### An email is sent to the following address when an IP is banned.##### Blank would suppress sending of mailsEMAIL_TO=”root”//给root发一封邮件—————————————————————————-##### Number of seconds the banned ip should remain in blacklist.BAN_PERIOD=600//关押黑名单中的IP的时长
3.卸载 DDoS deflate ,如果你不想用.
wget http://www.inetbase.com/scripts/ddos/uninstall.ddoschmod 0700 uninstall.ddos./uninstall.ddos
另外如果总是会收到以下类似的邮件提示的话
Banned the following ip addresses on Tue Aug 5 01:32:01 BST 2008
1120 with 1120 connections
请查看/usr/local/ddos/ddos.sh文件的第117行
netstat -ntu | awk ‘{print $5}’ | cut -d: -f1 | sort | uniq -c | sort -nr > $BAD_IP_LIST
修改为以下代码即可！
netstat -ntu | grep ‘:’ | awk ‘{print $5}’ | sed ‘s/::ffff://’ | cut -f1 -d ‘:’ | sort | uniq -c | sort -nr > $BAD_IP_LIST
顺境的美德是节制，逆境的美德是坚韧，这后一种是较为伟大的德性。
