端口安全检查shell脚本

 #!/bin/bash
 #This script name is scan_analyse.sh
 . /etc/profile
 echo "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='xx@mail.com'
 rm -rf $now_dir
 if [ ! -d "$work_dir/scan_result/$time" ];then
 mkdir -p $work_dir/scan_diff_result/$time
 fi
 rm -rf $work_dir/scan_diff_result/$time/result.log
 ip_32=`echo $IP|cut -d . -f -`
 if [ ! -d $now_dir/$ip_32 ];then
     mkdir -p $now_dir/$ip_32
 fi
 for i in {..}
 do
 nmap -sS -r -n $ip_32.$i |egrep -v "(Starting|scanned)"|egrep "(Nmap|open)" >$now_dir/$ip_32/$ip_32.$i
 if [ `cat $now_dir/$ip_32/$ip_32.$i|wc -l` -eq  ];then
 rm -rf  $now_dir/$ip_32/$ip_32.$i
 fi
 done
 echo "stop time is $(date)"
 for b in $ip_32
 do
 for i in $(ls $now_dir/$b)
 do
 if [ ! -f "$work_dir/scan_source/$b/$i" ];then
 echo "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/$i|wc -l` -gt  ];then
         echo "开启了所有端口,怀疑是有nat或者负载均衡!">>$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  ];then
         head -n  $now_dir/$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
     fi
 fi
 done
 done
 if [ `cat $work_dir/scan_diff_result/$time/result.log|wc -l` -eq  ];then
 echo "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" $contact_mail
 else
 sed -i "1i 大家好: \n    下面是$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.log
 cat $work_dir/scan_diff_result/$time/result.log|mail -s "【$time】所有IDC机房差异端口扫描结果" $contact_mail
 fi
 rm -rf $work_dir/scan_source/
 cp -a $work_dir/scan_result/$time  $work_dir/scan_source
 if [ $? -eq  ];then
 echo "运行完成,操作成功!"
 else
 echo "运行完成,操作失败!"
 fi