减轻DDoS攻击的轻量级小程序
2012-01-18 15:55
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DDoS deflate是一款免费的用来防御和减轻DDoS攻击的脚本。它通过netstat监测跟踪创建大量网络连接的IP地址,在检测到某个结点超过预设的限 制时,该程序会通过APF或IPTABLES禁止或阻挡这些IP.
官网:http://deflate.medialayer.com/
1、安装DDoS deflate
shell>wget http://www.inetbase.com/scripts/ddos/install.sh shell>chmod 0700 install.sh
shell>./install.sh
2、配置DDoS deflate
DDoS deflate的默认配置位于/usr/local/ddos/ddos.conf ,内容如下:
##### 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=1 //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_TO="root" //当IP被屏蔽时给指定邮箱发送邮件,推荐使用,换成自己的邮箱即可
##### 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
3、卸载DDoS deflate
shell>wget http://www.inetbase.com/scripts/ddos/uninstall.ddos shell>chmod 0700 uninstall.ddos
shell>./uninstall.ddos
4、白名单设置
有时候默认的白名单经常有失误,为了避免这个情况,我们可以手工设置白名单的ip,然后强制不允许修改
vi /usr/local/ddos/ignore.ip.list //手工设置白名单IP
chattr +i /usr/local/ddos/ignore.ip.list //强制不允许修改
chattr -i /usr/local/ddos/ignore.ip.list //解除不允许修改
官网:http://deflate.medialayer.com/
1、安装DDoS deflate
shell>wget http://www.inetbase.com/scripts/ddos/install.sh shell>chmod 0700 install.sh
shell>./install.sh
2、配置DDoS deflate
DDoS deflate的默认配置位于/usr/local/ddos/ddos.conf ,内容如下:
##### 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=1 //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_TO="root" //当IP被屏蔽时给指定邮箱发送邮件,推荐使用,换成自己的邮箱即可
##### 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
3、卸载DDoS deflate
shell>wget http://www.inetbase.com/scripts/ddos/uninstall.ddos shell>chmod 0700 uninstall.ddos
shell>./uninstall.ddos
4、白名单设置
有时候默认的白名单经常有失误,为了避免这个情况,我们可以手工设置白名单的ip,然后强制不允许修改
vi /usr/local/ddos/ignore.ip.list //手工设置白名单IP
chattr +i /usr/local/ddos/ignore.ip.list //强制不允许修改
chattr -i /usr/local/ddos/ignore.ip.list //解除不允许修改
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