Linux安全加固脚本的示例分析

今天就跟大家聊聊有关Linux安全加固脚本的示例分析，可能很多人都不太了解，为了让大家更加了解，小编给大家总结了以下内容，希望大家根据这篇文章可以有所收获。

#安全加固脚本#!/bin/bash #version1.0;write at 2017-03-29;#write by Ringoo; #1.将root管理员名称修改为Ringoouseradd -u 0 -g 0 -o ringoouseradd pso #2.修改默认密码策略#备份文件cp /etc/login.defs   /etc/login.defs.baksed -i 's/99999/90/' /etc/login.defs #3.设置3次输错密码锁定用户#备份文件cp /etc/pam.d/system-auth /etc/pam.d/system-auth.baksed -e '5 i\auth        required      /lib64/security/pam_tally2.so deny=3 unlock_time=300' -i /etc/pam.d/system-auth#密码复杂度设置sed -e "14 i\password    requisite     pam_cracklib.so minlen=10 difok=3 lcredit=-1 ucredit=-1 dcredit=-1 ocredit=-1 try_first_pass retry=3" -i /etc/pam.d/system-authsed -e '15d'  -i /etc/pam.d/system-auth #修改/etc/profile#备份文件cp /etc/profile /etc/profile.baksed -e 's/HISTSIZE=1000/HISTSIZE=3000/' -i /etc/profilesed -i "/HISTSIZE=3000/a HISTTIMEFORMAT=\"%F %T \"" /etc/profilesed -i "/HISTSIZE=3000/a TMOUT=1800" /etc/profilesed -i "$ a\export HISTORY_FILE=/var/log/useraudit.log" /etc/profilesed -i "$ a\export PROMPT_COMMAND=\'{ h=\`history 1\`;w=\`who am i\`;echo -e \$(date \"+%Y-%m-%d %H:%M:%S\") --- \$w ---\$h;} >> \$HISTORY_FILE\'" /etc/profile /bin/touch /var/log/useraudit.log/bin/chmod 777 /var/log/useraudit.log/usr/bin/chattr +a /var/log/useraudit.log #修改sshd配置#备份文件cp /etc/ssh/sshd_config   /etc/ssh/sshd_config.baksed -e 's/\#PermitRootLogin yes/PermitRootLogin no/' -i /etc/ssh/sshd_configsed -e 's/\#Port 22/Port 2222/' -i /etc/ssh/sshd_configsed -e 's/\#UseDNS yes/UseDNS no/' -i /etc/ssh/sshd_configsed -e 's/X11Forwarding yes/X11Forwarding no/' -i /etc/ssh/sshd_configsed -e 's/GSSAPIAuthentication yes/\#GSSAPIAuthentication yes/' -i /etc/ssh/sshd_configsed -e 's/GSSAPICleanupCredentials yes/\#GSSAPICleanupCredentials yes/' -i /etc/ssh/sshd_config#/etc/init.d/sshd restart #禁用不需要的服务/sbin/chkconfig ip6tables off/sbin/chkconfig iptables off/sbin/chkconfig avahi-daemon off/sbin/chkconfig avahi-dnsconfd off #数据库服务器这里请酌情配置#备份文件#cp /etc/pam.d/login /etc/pam.d/login.bak#cp /etc/security/limits.conf  /etc/security/limits.conf.bak#sed -i "$ a\session    required     /lib64/security/pam_limits.so" /etc/pam.d/login#sed -i "$ a\*  soft  nofile          65535" /etc/security/limits.conf#sed -i "$ a\*  hard  nofile          65535" /etc/security/limits.conf echo "please restart the server for the settings to take effect,press enter exit" read pauseexit 1

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