lynis 安全漏洞检测工具 https://cisofy.com/download/lynis/ https://cisofy.com/files/lynis-2.2.0.tar.gz

命令：sudo ./lynis --check-all -Q

sudo grep Warning /var/log/lynis.log

sudo grep Suggestion /var/log/lynis.log

　 sudo vi /etc/cron.daily/scan.sh

　　#!/bin/shAUDITOR="automated"DATE=$(date +%Y%m%d)HOST=$(hostname)LOG_DIR="/var/log/lynis"REPORT="$LOG_DIR/report-${HOST}.${DATE}"DATA="$LOG_DIR/report-data-${HOST}.${DATE}.txt"cd /opt/lynis./lynis -c --auditor "${AUDITOR}" --cronjob > ${REPORT}mv /var/log/lynis-report.dat ${DATA}

　　 sudo chmod 755 /etc/cron.daily/scan.sh

Linux系统被入侵后的经历 http://lizhenliang.blog.51cto.com/7876557/1769028

阿里云服务器安全配置:http://www.centoscn.com/CentosSecurity/CentosSafe/2015/0713/5855.html

linux服务器集群防火墙搭建 http://www.bubuko.com/infodetail-536557.html

linux企业防火墙搭建 http://www.open-open.com/doc/view/ce393775b65644319174e3dd14e4d305

Linux防火墙生成器技术 http://www.2cto.com/Article/200802/24102.html

Linux下安全扫描工具Nmap用法详解 https://nmap.org/download.html

linux 下各种指标监控 http://www.open-open.com/lib/view/open1392684857866.html

databse 管理 http://dba.stackexchange.com/?tags=mysql

Linux shell脚本 http://blog.csdn.net/su1216/article/details/10586903

Linux反入侵监测工具 http://netsecurity.51cto.com/art/201509/490966.htm https://suricata-ids.org/download/

Linux后门木马监测工具 http://blog.jobbole.com/77663/

Linux下75款安全工具 http://www.91linux.com/html/2014/Linux_Server_0219/8675.html

Linux服务器安全设置 http://0101x.blog.51cto.com/8639108/1365721

Linux系统加固个人经验 http://www.centoscn.com/CentosSecurity/CentosSafe/2015/0315/4881.html

Linux系统加固最佳实践 http://blog.chinaunix.net/uid-25723371-id-4542221.html

Linux web基本模块安装shell整理 https://github.com/oscm/shell https://github.com/qrpike/CentOS-6-Quick-Install-Scripts

Linux Os系统管理 https://github.com/oscm/shell/tree/master/os

Linux 双机负载均衡配置keepalived+tenginer http://www.it165.net/admin/html/201309/1866.html

Linux rsync增量传输大文件优化技巧

Linux 使用rsync实现文件备份同步

Linux系统初始化优化Shell脚本

常见加固,根据需要调整，转自网友的设置方案http://www.2cto.com/Article/201111/111131.html

http://www.codexiu.cn/linux/blog/5654/

Linux运维shell脚本 http://git.oschina.net/MickeyZZC/MLSBS

运维自动化管理服务器 CheungSSH

以下安全加固仅供参考

    #!/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 nerr=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

#!/bin/sh

echo "00 */1 * * *  /usr/sbin/ntpdate 192.168.1.1 >>/var/log/ntpdate.log" > mycrontab

crontab  mycrontab

rm -rf mycrontab

/usr/sbin/ntpdate 192.168.1.1

cp  /etc/sysconfig/i18n  /etc/sysconfig/i18n.bak

echo >  /etc/sysconfig/i18n

echo LANG="zh_CN.GB18030" >> /etc/sysconfig/i18n 

echo LANGUAGE="zh_CN.GB18030:zh_CN.GB2312:zh_CN" >> /etc/sysconfig/i18n 

echo SUPPORTED="zh_CN.UTF-8:zh_CN:zh:en_US.UTF-8:en_US:en" >> /etc/sysconfig/i18n 

echo SYSFONT="latarcyrheb-sun16"  >> /etc/sysconfig/i18n 

#echo "root:xbbwlcUoKjF7" | chpasswd

useradd weblogic

echo "weblogic:weblogic" | chpasswd

history -c 

# 接收套接字缓冲区大小的缺省值

echo "net.core.rmem_default = 2569600" >>/etc/sysctl.conf

# 最大的TCP数据接收缓冲

echo "net.core.rmem_max = 2569600" >>/etc/sysctl.conf

# 发送套接字缓冲区大小的缺省值

echo "net.core.wmem_default = 2569600" >>/etc/sysctl.conf

# 最大的TCP数据发送缓冲

echo "net.core.wmem_max = 2569600" >>/etc/sysctl.conf

# 时间戳在(请参考RFC 1323)TCP的包头增加12个字节

echo "net.ipv4.tcp_timestamps = 0" >>/etc/sysctl.conf

# 有选择的应答

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

# 支持更大的TCP窗口. 如果TCP窗口最大超过65535(64K), 必须设置该数值为1 

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

# 开启keepalive的闲置时长

echo "net.ipv4.tcp_keepalive_time = 600" >>/etc/sysctl.conf

echo "kernel.sem = 500 64000 200 256" >>/etc/sysctl.conf

# 文件句柄

echo "fs.file-max = 65536" >>/etc/sysctl.conf

echo "net.ipv4.ip_local_port_range = 1024 65000" >>/etc/sysctl.conf

# 当本地系统向外发起tcp或udp连接请求时使用的端口范围

sysctl -p

cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak

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

#当普通用户登录时，密码输入错误三次，系统马上把该用户锁定，需要120s后重新登录

cp /etc/pam.d/system-auth /etc/pam.d/system-auth.bak

#auth required pam_tally2.so deny=3 onerr=fail no_magic_root unlock_time=120

#由于远程是可以通过普通用户登录，所以普通用户的密码复杂度必须设置：给所有普通用户设置密码时，至少有一个特殊字符、大写字母、小写字母、最小长度为8位

#password requisite /lib/security/$ISA/pam_cracklib.so retry=3 difok=5  ocredit=-1 dcredit=-1 ucredit=-1  minlen=8

#设置密码过期的时间最多天数，新建用户是，用户可以修改的天使，密码的最短长度（前面已经设置可以不设置），密码过期的警告天数。

cp /etc/login.defs /etc/login.defs.bak

sed -i 's/PASS_MAX_DAYS.*   99999/PASS_MAX_DAYS   90/' /etc/login.defs 

sed -i 's/PASS_MIN_DAYS.*   0/PASS_MIN_DAYS   7/' /etc/login.defs 

sed -i 's/PASS_MIN_LEN.*    5/PASS_MIN_LEN    8/' /etc/login.defs 

#关闭DNS

cp  /etc/resolv.conf /etc/resolv.conf.bak

echo 'nameserver 210.22.84.3' > /etc/resolv.conf

#备份环境变量文件

cp  /etc/profile /etc/profile.bak

echo export TMOUT=600 >> /etc/profile  #增加60S超时退出

echo export HISTTIMEFORMAT=\'%F %T \' >> /etc/profile    #记录操作历史记录的时间

echo export HISTFILESIZE=10000 >> /etc/profile

echo export HISTSIZE=10000 >> /etc/profile

#修改系统文件最大打开数

echo -e "* soft  nofile = 32768 \n* hard  nofile = 65536" >> /etc/security/limits.conf

#计划任务

mkdir ~/Shell

echo -e " #!/bin/bash \n sync \n echo 3 > /proc/sys/vm/drop_caches" > ~/Shell/MemcacheClean.sh

echo "00 03 * * * /Shell/MemcacheClean.sh" > ~/Shell/mycrontab

crontab ~/Shell/mycrontab

#关闭selinux

sed '7s/enforcing/disabled/g' /etc/sysconfig/selinux -i

#关闭火墙

iptables -F

/etc/init.d/iptables save >> /dev/null

service sshd restart 

history -c

Windows系统加固脚本 http://www.wanglinlin.cn/?post=63

小常识收集:

linuxvim格式化代码格式化全文： gg=G 自动缩进当前行： ==

网站根目录权限遵循：
文件644 文件夹755 权限用户和用户组www
如出现文件权限问题时，请执行下面3条命令：

chown -R www.www /data/wwwroot/

find /data/wwwroot/ -type d -exec chmod 755 {} \;

find /data/wwwroot/ -type f -exec chmod 644 {} \;

来源：https://www.cnblogs.com/fangyuan303687320/p/5430480.html

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