使用shell脚本结合iptables防止类CC攻击
#!/bin/bash#script info:# Analysis access_log.abc log for a certain period of time to visit the suffix: "mp3",# and more than a certain number of requests an IP address, this IP address to iptables to filter to prevent the attack of CC.cd /usr/local/apache/logs/tail access_log.abc -n 2000 | awk '{print $1,$7}'| grep -E 'mp3$' | awk '{print $1,$2}' | sort | uniq -c | sort -nr | grep -v -E '127.0' | awk '{if($2!=null && $1>50){print $2}}' > drop_ip.txtfor i in `cat drop_ip.txt`doFLAG=0 for ai in `cat drop_ip_all.txt` do if [ "$i" = "$ai" ]; then FLAG=1 break fi done if [ $FLAG -eq 0 ]; then #echo --new drop ip:$i #add to iptables /sbin/iptables -A INPUT -s $i -p tcp --dport 80 -j DROP fidone#select drop_ip.txt append to drop_ip_all.txtcat drop_ip.txt >> drop_ip_all.txt#drop_ip_all remove repeat ip#cat drop_ip_all.txt | sort | uniq > drop_ip_all.txt