DoS-Deflate是一款免费的用来防御和减轻DDoS攻击。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。
DDoS-Deflate安装及配置
1、安装
wget 。
inetbase。com/scripts/ddos/install。sh
chmod 0700 install。sh
。/install。sh
2、配置
配置文件是 /usr/local/ddos/ddos。conf ，默认有如下配置
FREQ=1
NO_OF_CONNECTIONS=150
APF_BAN=1
KILL=1
EMAIL_TO=”root”
BAN_PERIOD=600
IP地址白名单：/usr/local/ddos/ignore。
ip。list
卸载
wget
chmod 0700 uninstall。ddos
。/uninstall。ddos
MediaLayer was in need of a script to automatically mitigate (D)DoS attacks。
The necessity started when MediaLayer was the target of a rather large, consistent attack originating from multiple IP addresses。
Each IP would have a large amount of connections to the server, as shown as by:
netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n。
