linux 检查shell脚本

#! /bin/bash
echo "+++++++++++++++++++++++++++++"
echo " "    
echo    "linux基线检"
echo " "   
echo "++++++++++++++++++++++++++++"
echo "--------------------------------------------------"
a=$(ifconfig -a | grep -w inet | grep -v 127.0.0.1 | awk 'NR==1{print $2}')
b=$(uname -s)
c=$(hostname)
e=$(date)
echo "=====================系统基础信息=========================="
echo "本机ip:$a"
echo "操作系统:$b"
echo "主机名称:$c"
echo "系统时间:$e"
echo ""
echo  "==================高危端口开放检测========================="
echo " "
tcpport=`netstat -anlpt | awk '{print $4}' | awk -F: '{print $NF}' | sort | uniq | grep '[0-9].*'`
udpport=`netstat -anlpu | awk '{print $4}' | awk -F: '{print $NF}' | sort | uniq | grep '[0-9].*'`
echo "开放高危tcp端口有:$tcpport"
echo "开放高危udp端口有:$udpport"echo "僵尸进程:"
ps -ef | grep zombie | grep -v grep
if [ $? == 1 ];then
    echo "无僵尸进程"
else
    echo "有僵尸进程------[需调整]"
fi
echo " "
echo "=================路由表=============="
route -n
echo " "
echo "================监听端口查看========="
netstat -tunlp
echo " "
echo "==============查看已建立连接========="
netstat -ano | grep "ES"
echo "==========查看占用CPU前十============"
ps aux|head -1 
ps aux|grep -v PID|sort -rn -k +3|head 
echo " "
echo "==============内存占用前十========="
ps aux|head -1 
ps aux|grep -v PID|sort -rn -k +4|head 
echo " "
echo "============免密登录检查============"
if [ -f "/root/.ssh" ];then
  echo "root下无.ssh文件"
else
  echo "root下存在.ssh文件"
fi
echo " "
echo "===========查看系统活动账户==="
w | tail -n +2
echo " "
echo  "========当前用户的计划任务====="
crontab -l
echo " "
echo "=======================身份鉴别安全================================"
grep -i "^password.*requisite.*pam_cracklib.so" /etc/pam.d/system-auth  > /dev/null
if [ $? == 0 ];then
    echo "密码复杂度:已设置"
else
    grep -i "pam_pwquality\.so" /etc/pam.d/system-auth > /dev/null
    if [ $? == 0 ];then
    echo ">>>密码复杂度:已设置"
    else
    echo ">>>密码复杂度:未设置]"
    fi
fi
echo "=============================dividing line================================"
awk -F":" '{if($2!~/^!|^*/){print ">>>("$1")" " 是一个未被锁定的账户,请管理员检查是否是可疑账户--------[需调整]"}}' /etc/shadow
echo "=============================dividing line================================"
more /etc/login.defs | grep -E "PASS_MAX_DAYS" | grep -v "#" |awk -F' '  '{if($2!=90){print ">>>密码过期天数是"$2"天,请管理员改成90天------[需调整]"}}'
echo "=============================dividing line================================"
grep -i "^auth.*required.*pam_tally2.so.*$" /etc/pam.d/sshd  > /dev/null
if [ $? == 0 ];then
  echo ">>>登入失败处理:已开启"
else
  echo ">>>登入失败处理:未开启,请加固登入失败锁定功能----------[需调整]"
fi
echo " "
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>访问控制安全<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"
echo "系统中存在以下非系统默认用户:"
more /etc/passwd |awk -F ":" '{if($3>500){print ">>>/etc/passwd里面的"$1 "的UID为"$3"，该账户非系统默认账户，请管理员确认是否为可疑账户--------[需调整]"}}'
echo "=============================dividing line================================"
echo "系统特权用户:"
awk -F: '$3==0 {print $1}' /etc/passwd
echo "=============================dividing line================================"
echo "系统中空口令账户:"
awk -F: '($2=="!!") {print $1"该账户为空口令账户，请管理员确认是否为新增账户，如果为新建账户，请配置密码-------[需调整]"}' /etc/shadow
echo " "
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>安全审计<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"
echo "正常情况下登录到本机30天内的所有用户的历史记录:"
last | head -n 30
echo "=============================dividing line================================"
echo "查看syslog日志审计服务是否开启:"
if service rsyslog status | egrep " active \(running";then
  echo ">>>经分析,syslog服务已开启"
else
  echo ">>>经分析,syslog服务未开启，建议通过service rsyslog start开启日志审计功能---------[需调整]"
fi
echo "=============================dividing line================================"
echo "查看syslog日志是否开启外发:"
if more /etc/rsyslog.conf | egrep "@...\.|@..\.|@.\.|\*.\* @...\.|\*\.\* @..\.|\*\.\* @.\.";then
  echo ">>>经分析,客户端syslog日志已开启外发--------[需调整]"
else
  echo ">>>经分析,客户端syslog日志未开启外发---------[无需调整]"
fi
echo "=============================dividing line================================"
echo "审计的要素和审计日志:"
more /etc/rsyslog.conf  | grep -v "^[$|#]" | grep -v "^$"
echo "=============================dividing line================================"
echo "系统中关键文件修改时间:"
ls -ltr /bin/ls /bin/login /etc/passwd  /bin/ps /etc/shadow|awk '{print ">>>文件名："$9"  ""最后修改时间："$6" "$7" "$8}'
echo "
###############################################################################################
#   ls文件:是存储ls命令的功能函数,被删除以后,就无法执行ls命令                                 #
#   login文件:login是控制用户登录的文件,一旦被篡改或删除,系统将无法切换用户或登陆用户         #
#   /etc/passwd是一个文件,主要是保存用户信息                                                  #
#   /bin/ps 进程查看命令功能支持文件,文件损坏或被更改后,无法正常使用ps命令                    #
#   /etc/shadow是/etc/passwd的影子文件,密码存放在该文件当中,并且只有root用户可读              #
###############################################################################################"
echo "=============================dividing line================================"
echo "检查重要日志文件是否存在:"
log_secure=/var/log/secure
log_messages=/var/log/messages
log_cron=/var/log/cron
log_boot=/var/log/boot.log
log_dmesg=/var/log/dmesg
if [ -e "$log_secure" ]; then
  echo  ">>>/var/log/secure日志文件存在"
else
  echo  ">>>/var/log/secure日志文件不存在------[需调整]"
fi
if [ -e "$log_messages" ]; then
  echo  ">>>/var/log/messages日志文件存在"
else
  echo  ">>>/var/log/messages日志文件不存在------[需调整]"
fi
if [ -e "$log_cron" ]; then
  echo  ">>>/var/log/cron日志文件存在"
else
  echo  ">>>/var/log/cron日志文件不存在--------[需调整]"
fi
if [ -e "$log_boot" ]; then
  echo  ">>>/var/log/boot.log日志文件存在"
else
  echo  ">>>/var/log/boot.log日志文件不存在--------[需调整]"
fi
if [ -e "$log_dmesg" ]; then
  echo  ">>>/var/log/dmesg日志文件存在"
else
  echo  ">>>/var/log/dmesg日志文件不存在--------[需调整]"
fi
echo " "
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>剩余信息保护<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"
echo "分区情况:"
echo "如果磁盘空间利用率过高，请及时调整---------[需调整]"
df -h
echo "=============================dividing line================================"
echo "可用块设备信息:"
lsblk
echo "=============================dividing line================================"
echo "文件系统信息:"
more /etc/fstab  | grep -v "^#" | grep -v "^$"
echo " "
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>入侵防范安全<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"
echo "系统入侵行为:"
more /var/log/secure |grep refused
if [ $? == 0 ];then
    echo "有入侵行为，请分析处理--------[需调整]"
else
    echo ">>>无入侵行为"
fi
echo "=============================dividing line================================"
echo "用户错误登入列表:"
lastb | head > /dev/null
if [ $? == 1 ];then
    echo ">>>无用户错误登入列表"
else
    echo ">>>用户错误登入--------[需调整]"
    lastb | head 
fi
echo "=============================dividing line================================"
echo "ssh暴力登入信息:"
more /var/log/secure | grep  "Failed" > /dev/null
if [ $? == 1 ];then
    echo ">>>无ssh暴力登入信息"
else
    more /var/log/secure|awk '/Failed/{print $(NF-3)}'|sort|uniq -c|awk '{print ">>>登入失败的IP和尝试次数: "$2"="$1"次---------[需调整]";}'
fi
echo " "
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>恶意代码防范<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"
echo "检查是否安装病毒软件:"
crontab -l | grep clamscan.sh > /dev/null
if [ $? == 0 ];then
  echo ">>>已安装ClamAV杀毒软件"
  crontab -l | grep freshclam.sh > /dev/null
  if [ $? == 0 ];then
    echo ">>>已部署定时更新病毒库"
  fi
else
  echo ">>>未安装ClamAV杀毒软件,请部署杀毒软件加固主机防护--------[无需调整]"
fi
echo " "
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>资源控制安全<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"
echo "查看是否开启了xinetd服务:"
if ps -elf |grep xinet |grep -v "grep xinet";then
  echo ">>>xinetd服务正在运行，请检查是否可以把xinetd服务关闭--------[无需调整]"
else
  echo ">>>xinetd服务未开启-------[无需调整]"
fi
echo "=============================dividing line================================"
echo  "查看是否开启了ssh服务:"
if service sshd status | grep -E "listening on|active \(running\)"; then
  echo ">>>SSH服务已开启"
else
  echo ">>>SSH服务未开启--------[需调整]"
fi
echo "=============================dividing line================================"
echo "查看是否开启了Telnet-Server服务:"
if more /etc/xinetd.d/telnetd 2>&1|grep -E "disable=no"; then
  echo ">>>Telnet-Server服务已开启"
else
  echo ">>>Telnet-Server服务未开启--------[无需调整]"
fi
echo "=============================dividing line================================"
ps axu | grep iptables | grep -v grep || ps axu | grep firewalld | grep -v grep 
if [ $? == 0 ];then
  echo ">>>防火墙已启用"
iptables -nvL --line-numbers
else
  echo ">>>防火墙未启用--------[需调整]"
fi
echo "=============================dividing line================================"
echo  "查看系统SSH远程访问设置策略(host.deny拒绝列表):"
if more /etc/hosts.deny | grep -E "sshd"; then
  echo ">>>远程访问策略已设置--------[需调整]"
else
  echo ">>>远程访问策略未设置--------[无需调整]"
fi
echo "=============================dividing line================================"
echo "查看系统SSH远程访问设置策略(hosts.allow允许列表):"
if more /etc/hosts.allow | grep -E "sshd"; then
  echo ">>>远程访问策略已设置--------[需调整]"
else
  echo ">>>远程访问策略未设置--------[无需调整]"
fi
echo "=============================dividing line================================"
echo "当hosts.allow和host.deny相冲突时,以hosts.allow设置为准"
echo "=============================dividing line================================"
grep -i "TMOUT" /etc/profile /etc/bashrc
if [ $? == 0 ];then
    echo ">>>已设置登入超时限制"
else
    echo ">>>未设置登入超时限制,请设置,设置方法:在/etc/profile或者/etc/bashrc里面添加参数TMOUT=600 --------[需调整]"
fi
echo