echo "##########################################################################"

echo "# #"

echo "# health check script #"

echo "# #"

echo "#警告:本脚本只是一个检查的操作,未对服务器做任何修改,管理员可以根据此报告 #"

echo "#进行相应的安全整改 #"

echo "##########################################################################"

echo " "

echo " "

echo "##########################################################################"

echo "# #"

echo "# 主机安全检测 #"

echo "# #"

echo "##########################################################################"

echo " "

echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>系统基本信息<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"

hostname=$(uname -n)

system=$(cat /etc/os-release | grep "^NAME" | awk -F\" '{print $2}')

version=$(cat /etc/redhat-release | awk '{print $4$5}')

kernel=$(uname -r)

platform=$(uname -p)

address=$(ip addr | grep inet | grep -v "inet6" | grep -v "127.0.0.1" | awk '{ print $2; }' | tr '\n' '\t' )

cpumodel=$(cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq)

cpu=$(cat /proc/cpuinfo | grep 'processor' | sort | uniq | wc -l)

machinemodel=$(dmidecode | grep "Product Name" | sed 's/^[ \t]*//g' | tr '\n' '\t' )

date=$(date)

echo "主机名: $hostname"

echo "系统名称: $system"

echo "系统版本: $version"

echo "内核版本: $kernel"

echo "系统类型: $platform"

echo "本机IP地址: $address"

echo "CPU型号: $cpumodel"

echo "CPU核数: $cpu"

echo "机器型号: $machinemodel"

echo "系统时间: $date"

echo " "

echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>资源使用情况<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"

summemory=$(free -h |grep "Mem:" | awk '{print $2}')

freememory=$(free -h |grep "Mem:" | awk '{print $4}')

usagememory=$(free -h |grep "Mem:" | awk '{print $3}')

uptime=$(uptime | awk '{print $2" "$3" "$4" "$5}' | sed 's/,$//g')

loadavg=$(uptime | awk '{print $9" "$10" "$11" "$12" "$13}')

echo "总内存大小: $summemory"

echo "已使用内存大小: $usagememory"

echo "可使用内存大小: $freememory"

echo "系统运行时间: $uptime"

echo "系统负载: $loadavg"

echo "=============================dividing line================================"

echo "内存状态:"

vmstat 2 5

echo "=============================dividing line================================"

echo "僵尸进程:"

ps -ef | grep zombie | grep -v grep

if [ $? == 1 ];then

echo ">>>无僵尸进程"

echo ">>>有僵尸进程------[需调整]"

echo "=============================dividing line================================"

echo "耗CPU最多的进程:"

ps auxf |sort -nr -k 3 |head -5

echo "=============================dividing line================================"

echo "耗内存最多的进程:"

ps auxf |sort -nr -k 4 |head -5

echo "=============================dividing line================================"

echo "环境变量:"

env

echo "=============================dividing line================================"

echo "路由表:"

route -n

echo "=============================dividing line================================"

echo "监听端口:"

netstat -tunlp

echo "=============================dividing line================================"

echo "当前建立的连接:"

netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'

echo "=============================dividing line================================"

echo "开机启动的服务:"

systemctl list-unit-files | grep enabled

echo " "

echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>系统用户情况<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"

echo "活动用户:"

w | tail -n +2

echo "=============================dividing line================================"

echo "系统所有用户:"

cut -d: -f1,2,3,4 /etc/passwd

echo "=============================dividing line================================"

echo "系统所有组:"

cut -d: -f1,2,3 /etc/group

echo "=============================dividing line================================"

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"

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,请加固密码--------[需调整]"

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"

echo ">>>登入失败处理:未开启,请加固登入失败锁定功能----------[需调整]"

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"

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]"

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]"

echo ">>>经分析,客户端syslog日志未开启外发---------[无需调整]"

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 "

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"

echo ">>>/var/log/secure日志文件不存在------[需调整]"

if [ -e "$log_messages" ]; then

echo ">>>/var/log/messages日志文件存在"

echo ">>>/var/log/messages日志文件不存在------[需调整]"

if [ -e "$log_cron" ]; then

echo ">>>/var/log/cron日志文件存在"

echo ">>>/var/log/cron日志文件不存在--------[需调整]"

if [ -e "$log_boot" ]; then

echo ">>>/var/log/boot.log日志文件存在"

echo ">>>/var/log/boot.log日志文件不存在--------[需调整]"

if [ -e "$log_dmesg" ]; then

echo ">>>/var/log/dmesg日志文件存在"

echo ">>>/var/log/dmesg日志文件不存在--------[需调整]"

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]"

echo ">>>无入侵行为"

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"

echo ">>>用户错误登入--------[需调整]"

lastb | head

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"

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]";}'

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

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]"

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]"

echo ">>>xinetd服务未开启-------[无需调整]"

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"

echo ">>>SSH服务未开启--------[需调整]"

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"

echo ">>>Telnet-Server服务未开启--------[无需调整]"

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

echo ">>>防火墙未启用--------[需调整]"

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]"

echo ">>>远程访问策略未设置--------[无需调整]"

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]"

echo ">>>远程访问策略未设置--------[无需调整]"

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"

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]"

echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>end<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"