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linux系统安全shell脚本第二版

作者:佚名 来源:网络整理 更新时间:2015-8-14
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   使用方法将其复制,保存为一个shell文件,比如security.sh.将其上传到linux服务器上,执行sh security.sh,就可以使用该脚本了!

  代码如下:

  #!/bin/sh

  # desc: setup linux system security

  # author:coralzd

  # powered by www.freebsdsystem.org

  # version 0.1.2 written by 2011.05.03

  #account setup

  passwd -l xfs

  passwd -l news

  passwd -l nscd

  passwd -l dbus

  passwd -l vcsa

  passwd -l games

  passwd -l nobody

  passwd -l avahi

  passwd -l haldaemon

  passwd -l gopher

  passwd -l ftp

  passwd -l mailnull

  passwd -l pcap

  passwd -l mail

  passwd -l shutdown

  passwd -l halt

  passwd -l uucp

  passwd -l operator

  passwd -l sync

  passwd -l adm

  passwd -l lp

  # chattr /etc/passwd /etc/shadow

  chattr +i /etc/passwd

  chattr +i /etc/shadow

  chattr +i /etc/group

  chattr +i /etc/gshadow

  # add continue input failure 3 ,passwd unlock time 5 minite

  sed -i 's#auth required pam_env.so#auth required pam_env.so\nauth required pam_tally.so onerr=fail deny=3 unlock_time=300\nauth required /lib/security/$ISA/pam_tally.so onerr=fail deny=3 unlock_time=300#' /etc/pam.d/system-auth

  # system timeout 5 minite auto logout

  echo "TMOUT=300" >>/etc/profile

  # will system save history command list to 10

  sed -i "s/HISTSIZE=1000/HISTSIZE=10/" /etc/profile

  # enable /etc/profile go!

  source /etc/profile

  # add syncookie enable /etc/sysctl.conf

  echo "net.ipv4.tcp_syncookies=1" >> /etc/sysctl.conf

  sysctl -p # exec sysctl.conf enable

  # optimizer sshd_config

  sed -i "s/#MaxAuthTries 6/MaxAuthTries 6/" /etc/ssh/sshd_config

  sed -i "s/#UseDNS yes/UseDNS no/" /etc/ssh/sshd_config

  # limit chmod important commands

  chmod 700 /bin/ping

  chmod 700 /usr/bin/finger

  chmod 700 /usr/bin/who

  chmod 700 /usr/bin/w

  chmod 700 /usr/bin/locate

  chmod 700 /usr/bin/whereis

  chmod 700 /sbin/ifconfig

  chmod 700 /usr/bin/pico

  chmod 700 /bin/vi

  chmod 700 /usr/bin/which

  chmod 700 /usr/bin/gcc

  chmod 700 /usr/bin/make

  chmod 700 /bin/rpm

  # history security

  chattr +a /root/.bash_history

  chattr +i /root/.bash_history

  # write important command md5

  cat > list << "EOF" &&

  /bin/ping

  /bin/finger

  /usr/bin/who

  /usr/bin/w

  /usr/bin/locate

  /usr/bin/whereis

  /sbin/ifconfig

  /bin/pico

  /bin/vi

  /usr/bin/vim

  /usr/bin/which

  /usr/bin/gcc

  /usr/bin/make

  /bin/rpm

  EOF

  for i in `cat list`

  do

  if [ ! -x $i ];then

  echo "$i not found,no md5sum!"

  else

  md5sum $i >> /var/log/`hostname`.log

  fi

  done

  rm -f list

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