安全运维之端口安全

#!/bin/bash#This script name is scan_analyse.sh. /etc/profileecho "start time is $(date)"time=$(date +"%Y-%m-%d")yesterday=`date -d "1 day ago " +"%Y-%m-%d"`work_dir="/root/nmap_scan"now_dir="$work_dir/scan_result/$time"IP='1.1.1.0/24'contact_mail='[email protected]'rm -rf $now_dirif [ ! -d "$work_dir/scan_result/$time" ];thenmkdir -p $work_dir/scan_diff_result/$timefirm -rf $work_dir/scan_diff_result/$time/result.logip_32=`echo $IP|cut -d . -f 1-3`if [ ! -d $now_dir/$ip_32 ];then    mkdir -p $now_dir/$ip_32fifor i in {1..254}donmap -sS -r -n $ip_32.$i |egrep -v "(Starting|scanned)"|egrep "(Nmap|open)" >$now_dir/$ip_32/$ip_32.$iif [ `cat $now_dir/$ip_32/$ip_32.$i|wc -l` -eq 1 ];thenrm -rf  $now_dir/$ip_32/$ip_32.$ifidoneecho "stop time is $(date)"for b in $ip_32 dofor i in $(ls $now_dir/$b)doif [ ! -f "$work_dir/scan_source/$b/$i" ];thenecho "增加新主机 $i,下面是全部信息:">>$work_dir/scan_diff_result/$time/result.log    if [ `cat $now_dir/$b/$i|wc -l` -gt 100 ];then        echo "开启了所有端口,怀疑是有nat或者负载均衡!">>$work_dir/scan_diff_result/$time/result.log    else        cat $now_dir/$b/$i>>$work_dir/scan_diff_result/$time/result.log    fi
else    if [ `diff -u $now_dir/$b/$i $work_dir/scan_source/$b/$i|egrep -v "(---|+++|@@)"|egrep "(Nmap|-|+)"|wc -l` -gt 100 ];then        head -n 1 $now_dir/$b/$i>>$work_dir/scan_diff_result/$time/result.log        echo "开启了所有端口,怀疑是有nat或者负载均衡!">>$work_dir/scan_diff_result/$time/result.log    else        diff -u $now_dir/$b/$i $work_dir/scan_source/$b/$i|egrep -v "(---|+++|@@)"|egrep "(Nmap|-|+)"|sed -e 's# Nmap scan report for#扫描主机#g'|sed -e 's#^+#关闭了 #g' -e 's#^-#开启了 #g'>>$work_dir/scan_diff_result/$time/result.log    fifidonedoneif [ `cat $work_dir/scan_diff_result/$time/result.log|wc -l` -eq 0 ];thenecho "今日一切正常，没有变化的端口!"|mail -s "【$time】所有IDC机房差异端口扫描结果" $contact_mailelsesed -i "1i 大家好: n    下面是$time日所有IDC机房扫描新增主机或已有主机新增或关闭端口情况,请各项目负责人及时认领与确认.n" $work_dir/scan_diff_result/$time/result.logcat $work_dir/scan_diff_result/$time/result.log|mail -s "【$time】所有IDC机房差异端口扫描结果" $contact_mailfirm -rf $work_dir/scan_source/cp -a $work_dir/scan_result/$time  $work_dir/scan_sourceif [ $? -eq 0 ];thenecho "运行完成,操作成功!"elseecho "运行完成,操作失败!"fi

12:55:17 # tree /root/nmap_scan//root/nmap_scan/|-- scan_diff_result       #今天与昨天扫描对比结构|   `-- 2014-06-23         #当天的目录|       `-- result.log     #对比结果内容|-- scan_result            #存放今天扫描的结果|-- scan_shell             #存放扫描脚本|   `-- scan_analyse.sh    #安全端口扫描脚本`-- scan_source            #昨天扫描结果，作为与今天对比的源    
5 directories, 2 files

mkdir -p /root/nmap_scan/scan_shell

30 01 * * * /bin/bash /root/nmap_scan/scan_shell/scan_analyse.sh >>/tmp/scan.log 2 >&1