[root@localhost ddos]# cat ddos.conf
##### Paths of the script and other files #配置文件也是个shell脚本
PROGDIR="/usr/local/ddos"
PROG="/usr/local/ddos/ddos.sh"
IGNORE_IP_LIST="/usr/local/ddos/ignore.ip.list" #存放白名单的文件
CRON="/etc/cron.d/ddos.cron" #计划任务,默认是每分钟执行一次ddos.sh
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 effect
FREQ=1 #DDoS-Deflate通过linux的计划任务执行,默认为每分钟一次
##### How many connections define a bad IP? Indicate that below.
NO_OF_CONNECTIONS=150 #定义单个IP达到多少连接时规定为这是一次ddos攻击
##### 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 #这里为 “0”,表示使用iptables,而不是APF
##### KILL=0 (Bad IPs are'nt banned, good for interactive execution of script)
##### KILL=1 (Recommended setting)
KILL=1 #是否阻止被定义为ddos攻击的ip,“1”为阻止
##### An email is sent to the following address when an IP is banned.
##### Blank would suppress sending of mails
EMAIL_TO="[email protected]" #事件通知人的邮件地址
##### Number of seconds the banned ip should remain in blacklist.
BAN_PERIOD=600 #阻止被定义为ddos攻击者ip与本机通信时间,默认为600秒
Usage: ddos.sh [OPTIONS] [N]
N : number of tcp/udp connections (default 150)
OPTIONS:
-h | --help: Show this help screen
-c | --cron: Create cron job to run this script regularly (default 1 mins)
-k | --kill: Block the offending ip making more than N connections
安装完成后,还需要修改配置文件,达到利用iptables自动锁定IP的目的。
# vi /usr/local/ddos/ddos.conf
接下来修改,这里主要是APF_BAN=1修改为0(使用iptables),另外EMAIL_TO="root"可以将root修改为你的一个Email地址,这样系统办掉哪个IP,会有邮件提示你。
-----------------------------------------
##### Paths of the script and other files
PROGDIR=”/usr/local/ddos”
PROG=”/usr/local/ddos/ddos.sh”
IGNORE_IP_LIST=”/usr/local/ddos/ignore.ip.list” //IP地址白名单
CRON=”/etc/cron.d/ddos.cron” //定时执行程序
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 effect
FREQ=1 //检查时间间隔,默认1分钟
##### How many connections define a bad IP? Indicate that below.
NO_OF_CONNECTIONS=150 //最大连接数,超过这个数IP就会被屏蔽,一般默认即可
##### 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 //使用APF还是iptables。推荐使用iptables,将APF_BAN的值改为0即可。
##### KILL=0 (Bad IPs are’nt banned, good for interactive execution of script)
##### KILL=1 (Recommended setting)
KILL=1 //是否屏蔽IP,默认即可
##### An email is sent to the following address when an IP is banned.
##### Blank would suppress sending of mails [email protected] //当IP被屏蔽时给指定邮箱发送邮件,推荐使用,换成自己的邮箱
##### Number of seconds the banned ip should remain in blacklist.
BAN_PERIOD=600 //禁用IP时间,默认600秒,可根据情况调整