Apache日誌分析腳本
1,查看apache進程:
ps aux | grep httpd | grep -v grep | wc -l
2,查看80端口的tcp連接:
netstat -tan | grep "ESTABLISHED" | grep ":80" | wc -l
3,通過日誌查看當天ip連接數，過濾重複:
cat access_log | grep "20/Oct/2008" | awk '{print $2}' | sort | uniq -c | sort -nr
4,當天ip連接數最高的ip都在幹些什麼(原來是蜘蛛):
cat access_log | grep "20/Oct/2008:00" | grep "122.102.7.212" | awk '{print $8}' | sort | uniq -c | sort -nr | head -n 10
5,當天訪問頁面排前10的url:
cat access_log | grep "20/Oct/2008:00" | awk '{print $8}' | sort | uniq -c | sort -nr | head -n 10
6,用tcpdump嗅探80端口的訪問看看誰最高
tcpdump -i eth0 -tnn dst port 80 -c 1000 | awk -F"." '{print $1"."$2"."$3"."$4}' | sort | uniq -c | sort -nr
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接着從日誌裏查看該ip在幹嘛:
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cat access_log | grep 122.102.7.212| awk '{print $1"\t"$8}' | sort | uniq -c | sort -nr | less
7,查看某一時間段的ip連接數:
grep "2006:0[7-8]" www20060723.log | awk '{print $2}' | sort | uniq -c| sort -nr | wc -l
幾個應付DOS攻擊的管理腳本
關鍵字: dos
$ cat dos_ip.sh
#!/bin/bash
netstat -an|grep SYN_RECV|awk -F' ' '{print $5;}'|awk -F':' '{print $1;}'|sort| uniq -c | sort -nr | head -n $1
$ cat dos_attack.sh
#!/bin/bash
netstat -an|grep SYN_RECV|awk -F' ' '{print $5;}'|awk -F':' '{print $1;}'|sort| uniq -c | sort -nr | head -n $1|awk -F' ' '{print $2}'|xargs --replace=TTT /sbin/iptables -t filter -I INPUT 1 -m state --state NEW -m tcp -p tcp -s TTT --dport 80 -j REJECT --reject-with icmp-host-prohibited
$ cat nst.sh
#!/bin/bash
if [[ "1" != "1$1" ]]; then
netstat -an|grep $1|awk -F' ' '{print $5;}'|awk -F':' '{print $1;}'|sort| uniq -c | sort -nr | head -n 10
else
netstat -an|awk -F' ' '{print $5;}'|awk -F':' '{print $1;}'|sort| uniq -c | sort -nr | head -n 10
fi