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17/07/2020 7:04 am
前言：
之前想着每天都更新一篇文章，但是连续几天之后，发现有好多博客大佬，所以觉得还是不要献丑好一点，然后就学习一下关于安全防护的知识，毕竟安全意识强弱代表在互联网防护能力，类似ddos，xss,csrf等也是经常出现，比如一些基本的攻击方式：SQL注入，web参数，cc。所以我就记录了下面全程的将WAF嵌入LNMP架构，应用于实战集群架构。附带lua语言写的防护模块。
实战：
服务器架构图如下：
一、web服务器集群高可用负载均衡
1.高可用使用：nginx+keepalived模式
master（web1） 192.168.0.230
slaver（web2） 192.168.0.211
VIP：192.168.0.100
2.两边安装keepalived
[root@web1 ~]# yum install -y keepalived3.创建服务器监控脚本
[root@web1 ~]# mkdir -p /server/work
[root@web1 ~]# cd /server/work/
[root@web1 work]# vim check_ng.sh
#!/bin/bash
#write by leo
d=`date --date today +%Y%m%d_%H:%M:%S`
n=`ps -C nginx --no-heading|wc -l`
#如果进程为0，则启动nginx，并且再次检测nginx进程数量，
#如果还为0，说明nginx无法启动，此时需要关闭keepalived
if [ $n -eq "0" ]; then
/etc/init.d/nginx start
n2=`ps -C nginx --no-heading|wc -l`
if [ $n2 -eq "0" ]; then
echo "$d nginx down,keepalived will stop" >> /server/logs/nginx/check_ng.log
systemctl stop keepalived
fi
fi
[root@web1 work]# mkdir -p /server/logs/nginx
[root@web1 work]# chmod +x check_ng.sh4.修改master的keepalived配置文件
[root@web1 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
[email protected]
}
notification_email_from root@web1
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_script chk_nginx {
script "/server/work/check_ng.sh"
interval 3
}
vrrp_instance VI_1 {
state MASTER
interface ens33
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 000000
}
virtual_ipaddress {
192.168.0.100
}
track_script {
chk_nginx
}
}
[root@web1 ~]# systemctl stop nginx
[root@web1 ~]# systemctl status nginx
● nginx.service - LSB: starts the nginx web server
Loaded: loaded (/etc/rc.d/init.d/nginx; bad; vendor preset: disabled)
Active: inactive (dead)
Docs: man:systemd-sysv-generator(8)
[root@web1 ~]# systemctl start keepalived
[root@web1 ~]# systemctl status keepalived
● keepalived.service - LVS and VRRP High Availability Monitor
Loaded: loaded (/usr/lib/systemd/system/keepalived.service; disabled; vendor preset: disabled)
Active: active (running) since Fri 2018-07-13 15:06:13 CST; 32s ago
Process: 14019 ExecStart=/usr/sbin/keepalived $KEEPALIVED_OPTIONS (code=exited, status=0/SUCCESS)
Main PID: 14020 (keepalived)
CGroup: /system.slice/keepalived.service
├─14020 /usr/sbin/keepalived -D
├─14021 /usr/sbin/keepalived -D
└─14022 /usr/sbin/keepalived -D
Jul 13 15:06:15 web1 Keepalived_vrrp[14022]: Sending gratuitous ARP on...
Jul 13 15:06:15 web1 Keepalived_vrrp[14022]: Sending gratuitous ARP on...
Jul 13 15:06:15 web1 Keepalived_vrrp[14022]: Sending gratuitous ARP on...
Jul 13 15:06:15 web1 Keepalived_vrrp[14022]: Sending gratuitous ARP on...
Jul 13 15:06:20 web1 Keepalived_vrrp[14022]: Sending gratuitous ARP on...
Jul 13 15:06:20 web1 Keepalived_vrrp[14022]: VRRP_Instance(VI_1) Sendi...
Jul 13 15:06:20 web1 Keepalived_vrrp[14022]: Sending gratuitous ARP on...
Jul 13 15:06:20 web1 Keepalived_vrrp[14022]: Sending gratuitous ARP on...
Jul 13 15:06:20 web1 Keepalived_vrrp[14022]: Sending gratuitous ARP on...
Jul 13 15:06:20 web1 Keepalived_vrrp[14022]: Sending gratuitous ARP on...
Hint: Some lines were ellipsized, use -l to show in full.5.修改slaver的keepalived配置文件
[root@web2 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
[email protected]
}
notification_email_from root@web2
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_script chk_nginx {
script "/server/work/check_ng.sh"
interval 3
}
vrrp_instance VI_1 {
state BACKUP
interface ens33
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 000000
}
virtual_ipaddress {
192.168.0.100
}
track_script {
chk_nginx
}
}
[root@web2 ~]# systemctl stop nginx
[root@web2 ~]# systemctl status nginx
● nginx.service - LSB: starts the nginx web server
Loaded: loaded (/etc/rc.d/init.d/nginx; bad; vendor preset: disabled)
Active: inactive (dead)
Docs: man:systemd-sysv-generator(8)
[root@web2 ~]# systemctl start keepalived
[root@web2 ~]# systemctl status keepalived
● keepalived.service - LVS and VRRP High Availability Monitor
Loaded: loaded (/usr/lib/systemd/system/keepalived.service; disabled; vendor preset: disabled)
Active: active (running) since Fri 2018-07-13 15:07:20 CST; 43s ago
Process: 13279 ExecStart=/usr/sbin/keepalived $KEEPALIVED_OPTIONS (code=exited, status=0/SUCCESS)
Main PID: 13280 (keepalived)
CGroup: /system.slice/keepalived.service
├─13280 /usr/sbin/keepalived -D
├─13281 /usr/sbin/keepalived -D
└─13282 /usr/sbin/keepalived -D
Jul 13 15:07:20 web2 Keepalived_vrrp[13282]: Registering Kernel netlin...
Jul 13 15:07:20 web2 Keepalived_vrrp[13282]: Registering gratuitous AR...
Jul 13 15:07:20 web2 Keepalived_vrrp[13282]: Opening file '/etc/keepal...
Jul 13 15:07:20 web2 Keepalived_vrrp[13282]: WARNING - default user 'k...
Jul 13 15:07:20 web2 Keepalived_vrrp[13282]: SECURITY VIOLATION - scri...
Jul 13 15:07:20 web2 Keepalived_vrrp[13282]: VRRP_Instance(VI_1) remov...
Jul 13 15:07:20 web2 Keepalived_vrrp[13282]: Using LinkWatch kernel ne...
Jul 13 15:07:20 web2 Keepalived_vrrp[13282]: VRRP_Instance(VI_1) Enter...
Jul 13 15:07:20 web2 Keepalived_vrrp[13282]: VRRP sockpool: [ifindex(2...
Jul 13 15:07:20 web2 Keepalived_vrrp[13282]: VRRP_Script(chk_nginx) su...
Hint: Some lines were ellipsized, use -l to show in full.6.在master上查看IP地址
[root@web1 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:c5:33:97 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.230/24 brd 192.168.0.255 scope global noprefixroute dynamic ens33
valid_lft 6103sec preferred_lft 6103sec
inet 192.168.0.100/32 scope global ens33
valid_lft forever preferred_lft forever7.在slaver上查看IP地址
[root@web2 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:d7:df:dc brd ff:ff:ff:ff:ff:ff
inet 192.168.0.211/24 brd 192.168.0.255 scope global noprefixroute dynamic ens33
valid_lft 6107sec preferred_lft 6107sec
inet6 fe80::20c:29ff:fed7:dfdc/64 scope link
valid_lft forever preferred_lft forever8.在master上关闭keepalived服务（模拟master宕机或者脑裂情况）
[root@web1 ~]# systemctl stop keepalived
[root@web1 ~]# systemctl status keepalived
● keepalived.service - LVS and VRRP High Availability Monitor
Loaded: loaded (/usr/lib/systemd/system/keepalived.service; disabled; vendor preset: disabled)
Active: inactive (dead)
Jul 13 15:06:20 web1 Keepalived_vrrp[14022]: Sending gratuitous ARP on...
Jul 13 15:06:20 web1 Keepalived_vrrp[14022]: Sending gratuitous ARP on...
Jul 13 15:06:20 web1 Keepalived_vrrp[14022]: Sending gratuitous ARP on...
Jul 13 15:11:20 web1 systemd[1]: Stopping LVS and VRRP High Availabil....
Jul 13 15:11:20 web1 Keepalived[14020]: Stopping
Jul 13 15:11:20 web1 Keepalived_vrrp[14022]: VRRP_Instance(VI_1) sent ...
Jul 13 15:11:20 web1 Keepalived_vrrp[14022]: VRRP_Instance(VI_1) remov...
Jul 13 15:11:21 web1 Keepalived_vrrp[14022]: Stopped
Jul 13 15:11:21 web1 Keepalived[14020]: Stopped Keepalived v1.3.5 (03...2
Jul 13 15:11:21 web1 systemd[1]: Stopped LVS and VRRP High Availabili....
Hint: Some lines were ellipsized, use -l to show in full.9.在slaver上查看状态
[root@web2 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:d7:df:dc brd ff:ff:ff:ff:ff:ff
inet 192.168.0.211/24 brd 192.168.0.255 scope global noprefixroute dynamic ens33
valid_lft 5895sec preferred_lft 5895sec
inet 192.168.0.100/32 scope global ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fed7:dfdc/64 scope link
valid_lft forever preferred_lft forever
[root@web2 ~]# systemctl status keepalived
● keepalived.service - LVS and VRRP High Availability Monitor
Loaded: loaded (/usr/lib/systemd/system/keepalived.service; disabled; vendor preset: disabled)
Active: active (running) since Fri 2018-07-13 15:07:20 CST; 7min ago
Process: 13279 ExecStart=/usr/sbin/keepalived $KEEPALIVED_OPTIONS (code=exited, status=0/SUCCESS)
Main PID: 13280 (keepalived)
CGroup: /system.slice/keepalived.service
├─13280 /usr/sbin/keepalived -D
├─13281 /usr/sbin/keepalived -D
└─13282 /usr/sbin/keepalived -D
Jul 13 15:12:22 web2 Keepalived_vrrp[13282]: Sending gratuitous ARP on...
Jul 13 15:12:22 web2 Keepalived_vrrp[13282]: Sending gratuitous ARP on...
Jul 13 15:12:22 web2 Keepalived_vrrp[13282]: Sending gratuitous ARP on...
Jul 13 15:12:22 web2 Keepalived_vrrp[13282]: Sending gratuitous ARP on...
Jul 13 15:12:27 web2 Keepalived_vrrp[13282]: Sending gratuitous ARP on...
Jul 13 15:12:27 web2 Keepalived_vrrp[13282]: VRRP_Instance(VI_1) Sendi...
Jul 13 15:12:27 web2 Keepalived_vrrp[13282]: Sending gratuitous ARP on...
Jul 13 15:12:27 web2 Keepalived_vrrp[13282]: Sending gratuitous ARP on...
Jul 13 15:12:27 web2 Keepalived_vrrp[13282]: Sending gratuitous ARP on...
Jul 13 15:12:27 web2 Keepalived_vrrp[13282]: Sending gratuitous ARP on...
Hint: Some lines were ellipsized, use -l to show in full.10.查看丢包情况
在windows上模拟持续性访问，使用ping查看丢包情况
二、建立共享存储服务器
1.安装NFS方式，master 服务端
[root@web1 web]# yum install -y rpcbind nfs-utils2.slaver 客户端
[root@web2 web]# yum install -y nfs-utils3.master服务端启动共享存储服务
[root@web1 web]# cat /etc/exports
/server/web 192.168.0.0/24(rw,sync,no_root_squash)
[root@web1 web]# systemctl start nfs4.slaver客户端查看共享存储
[root@web2 web]# showmount -e 192.168.0.230
Export list for 192.168.0.230:
/server/web 192.168.0.0/24
[root@web2 web]#
[root@web2 web]# mount -t nfs 192.168.0.230:/server/web /server/web -o proto=tcp -o nolock
[root@web2 web]# ls
[root@web2 web]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 50G 4.2G 46G 9% /
devtmpfs 899M 0 899M 0% /dev
tmpfs 911M 0 911M 0% /dev/shm
tmpfs 911M 9.6M 902M 2% /run
tmpfs 911M 0 911M 0% /sys/fs/cgroup
/dev/sda1 1014M 142M 873M 14% /boot
/dev/mapper/centos-home 47G 74M 47G 1% /home
tmpfs 183M 0 183M 0% /run/user/0
192.168.0.230:/server/web 50G 4.2G 46G 9% /server/web
[root@web2 web]#5.修改nginx配置文件（两边配置一致）
[root@web1 ~]# cd /usr/local/nginx/conf/vhost/
[root@web1 vhost]# vim zt.conf
server
{
listen 80;
#listen [::]:80 default_server ipv6only=on;
server_name zt.linuxview.com ;
index index.html index.htm index.php;
root /server/web/test;
#error_page 404 /404.html;
error_page 404 404/404.html;
include enable-php.conf;
location /nginx_status
{
stub_status on;
access_log off;
}
location ~* ^/data/(attachment|avatar)/.*\.(php|php5)$ {
deny all;
}
location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$
{
expires 30d;
}
location ~ .*\.(js|css)?$
{
expires 12h;
}
location ~ /\.
{
deny all;
}
access_log /server/logs/nginx/zuitu/access.log ;
error_log /server/logs/nginx/zuitu/error.log ;
}6.访问网页
7.master上设置反向代理
[root@web1 vhost]# vim xs.conf
server
{
listen 80;
server_name xs.linuxview.com ;
location / {
proxy_pass http://192.168.0.211:80;
proxy_set_header Host xs.linuxview.com;
proxy_redirect off;
proxy_set_header X-Real-IP 192.168.0.211;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_connect_timeout 60;
proxy_read_timeout 600;
proxy_send_timeout 600;
}
access_log /server/logs/nginx/zuitu/access.log ;
error_log /server/logs/nginx/zuitu/error.log ;
}
[root@web1 vhost]# /usr/local/nginx/sbin/nginx -s reload8.slaver上设置nginx的配置文件
[root@web2 vhost]# vim xs.conf
server
{
listen 80;
#listen [::]:80 default_server ipv6only=on;
server_name xs.linuxview.com ;
index index.html index.htm index.php;
root /server/web/test3;
#error_page 404 /404.html;
error_page 404 404/404.html;
include enable-php.conf;
location /nginx_status
{
stub_status on;
access_log off;
}
location ~* ^/data/(attachment|avatar)/.*\.(php|php5)$ {
deny all;
}
location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$
{
expires 30d;
}
location ~ .*\.(js|css)?$
{
expires 12h;
}
location ~ /\.
{
deny all;
}
access_log /server/logs/nginx/zuitu/access.log ;
error_log /server/logs/nginx/zuitu/error.log ;
}
[root@web2 vhost]# /usr/local/nginx/sbin/nginx -s reload9.访问网页测试
三、WAF镶嵌lnmp架构
1.安装依赖包
[root@waf ~]# yum install -y readline-devel pcre-devel openssl-devel gcc* git* libxml2*2.下载2.0.5版本的luajit，编译安装
[root@waf ~]# mkdir -p /server/source
[root@waf ~]# cd /server/source/
[root@waf source]# wget http://luajit.org/download/LuaJIT-2.0.5.tar.gz
[root@waf source]# tar -xf LuaJIT-2.0.5.tar.gz
[root@waf source]# cd LuaJIT-2.0.5
[root@waf LuaJIT-2.0.5]# export LUAJIT_LIB=/user/local/lib
[root@waf LuaJIT-2.0.5]# export LUAJIT_INC=/usr/local/include/luajit-2.0
[root@waf LuaJIT-2.0.5]# make && make install && ln -s /usr/local/lib/libluajit-5.1.so.2 /lib64/libluajit-5.1.so.2成功安装标志：
3.下载并编译安装openresty
[root@waf source]# wget https://openresty.org/download/openresty-1.11.2.2.tar.gz
[root@waf source]# tar -xf openresty-1.11.2.2.tar.gz
[root@waf source]# cd openresty-1.11.2.2
[root@waf openresty-1.11.2.2]# ./configure --prefix=/usr/local/openresty --user=www --group=www --with-luajit --with-http_v2_module --with-http_stub_status_module --with-http_ssl_module --with-http_gzip_static_module --with-ipv6 --with-http_sub_module --with-pcre --with-pcre-jit --with-file-aio --with-http_dav_module
[root@waf openresty-1.11.2.2]# gmake && gmake install4.修改最大文件打开数量
[root@waf openresty-1.11.2.2]# vim /proc/sys/fs/file-max
100000
[root@waf openresty-1.11.2.2]# ulimit -l
645.修改openresty内置的nginx配置文件（--prefix指定的是安装目录，所以配置文件就在安装目录里面，编译完成之后，就不用在源码包界面了）
[root@waf openresty]# mkdir /server/conf
[root@waf openresty]# pwd
/usr/local/openresty
[root@waf openresty]# cd /server/conf/
[root@waf conf]# ls
[root@waf conf]# ln -s /usr/local/openresty /server/conf/openresty
[root@waf conf]# ls
openresty
[root@waf conf]# ln -s /usr/local/openresty/nginx /server/conf/nginx
[root@waf conf]# ll
total 0
lrwxrwxrwx 1 root root 26 Jul 10 09:25 nginx -> /usr/local/openresty/nginx
lrwxrwxrwx 1 root root 20 Jul 10 09:23 openresty -> /usr/local/openresty
[root@waf conf]#vim nginx.conf （修改user为www ,在最后一行的括号上新增include vhost/*.conf;）
[root@waf conf]# useradd www -M -s /sbin/nologin
[root@waf conf]# mkdir vhost
[root@waf conf]# cd vhost/
##编写测试网页
[root@waf vhost]# vim waf.conf
server {
listen 80 ;
server_name waf.linuxview.com ;
index index.html index.php index.htm ;
root /server/web/waf ;
error_log /server/logs/nginx/waf/error.log;
access_log /server/logs/nginx/waf/access.log;
}
[root@waf vhost]# mkdir -p /server/web/waf && cd /server/web/waf
##创建测试网页
[root@waf waf]# cat index.html
Welcome to Linuxview!!!
##重加载nginx
[root@waf waf]# /usr/local/openresty/nginx/sbin/nginx -s reload6.访问测试网页
7.安装waf防护模块
[root@waf waf]# cd /server/source/ #这个目录用来存源码或软件包等
[root@waf source]# git clone https://github.com/leoheng/lua.git
#这些全是lua语言写的防护模块，复制到nginx的conf配置文件目录
[root@waf waf]# cp -a ./waf /server/conf/nginx/conf/
[root@waf waf]# cd /server/conf/nginx/conf/
[root@waf conf]# ls
fastcgi.conf koi-win scgi_params waf
fastcgi.conf.default mime.types scgi_params.default win-utf
fastcgi_params mime.types.default uwsgi_params
fastcgi_params.default nginx.conf uwsgi_params.default
koi-utf nginx.conf.default vhost
[root@waf conf]# cd waf/
[root@waf waf]# ls
access.lua config.lua init.lua lib.lua rule-config
[root@waf waf]#cd ..
##在http字段下添加lua模块
[root@waf conf]# vim nginx.conf
lua_shared_dict limit 50m; ##CC,50M
lua_package_path /server/conf/nginx/conf/waf/?.lua ;
init_by_lua_file /server/conf/nginx/conf/waf/init.lua ;
access_by_lua_file /server/conf/nginx/conf/waf/access.lua ;
##检查配置文件并重加载服务
[root@waf conf]# /usr/local/openresty/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/openresty/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/openresty/nginx/conf/nginx.conf test is successful
[root@waf conf]# /usr/local/openresty/nginx/sbin/nginx -s reload8.配置waf防护
[root@waf waf]# cat config.lua
--WAF config file,enable = "on",disable = "off" ##WAF功能选项
--waf status
config_waf_enable = "on" ##是否启动waf防护
--log dir
config_log_dir = "/server/logs/waf_logs" ##waf的日志
--rule setting
config_rule_dir = "/usr/local/openresty/nginx/conf/waf/rule-config" ##waf的防护规则配置文件
--enable/disable white url
config_white_url_check = "on" ##配置白名单url检查
--enable/disable white ip
config_white_ip_check = "on" ##配置白名单IP检查
--enable/disable block ip
config_black_ip_check = "on" ##配置黑名单IP检查
--enable/disable url filtering
config_url_check = "on" ##配置url检查过滤
--enalbe/disable url args filtering
config_url_args_check = "on" ##配置url参数检查
--enable/disable user agent filtering
config_user_agent_check = "on" ##配置用户代理检查
--enable/disable cookie deny filtering
config_cookie_check = "on" ##配置cookie过滤检查
--enable/disable cc filtering
config_cc_check = "on" ##配置CC×××检查过滤
--cc rate the xxx of xxx seconds
config_cc_rate = "10/60" ##CC×××速率访问网页每60秒访问10次
--enable/disable post filtering
config_post_check = "on" ##配置post检查过滤
--config waf output redirect/html
config_waf_output = "html" ##配置匹配成功重定向或者输出警告页面
--if config_waf_output ,setting url
config_waf_redirect_url = "https://www.baidu.com" ##重定向到百度首页
##输出HTML格式的警告信息[[ html警告内容 ]]
config_output_html=[[
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Content-Language" content="zh-cn" />
<title>WAF-TEST</title>
</head>
<body>
<h1 align="center> WAF功能防护中，请勿进行非正常操作
</body>
</html>
]]9.访问匹配模块
规则：检测白名单-》黑名单-》UA×××检测-》CC×××检测-》cookie检测-》URL检测-》URL×××检测-》URL参数检测-》post检测
[root@waf waf]# cat access.lua
require 'init' ##先请求init.lua文件进行匹配，然后进行检查功能匹配
##配置检查顺序
function waf_main()
if white_ip_check() then
elseif black_ip_check() then
elseif user_agent_attack_check() then
elseif cc_attack_check() then
elseif cookie_attack_check() then
elseif white_url_check() then
elseif url_attack_check() then
elseif url_args_attack_check() then
--elseif post_attack_check() then
else
return
end
end
waf_main()
[root@waf waf]#10.防护规则大概流程图：
11.url参数测试
12.模拟CC攻击测试
[root@waf waf]# ab -c 100 -t 100 http://waf.linuxview.com/ 
13.查看日志记录：攻击方式，客户端地址，被攻击的服务器时间等等
14.SQL注入测试
15.安装httpguard再升级CC防护
下载压缩包，复制lua配置到waf下
[root@waf waf]# cd /server/source/
[root@waf source]# wget --no-check-certificate https://github.com/centos-bz/HttpGuard/archive/master.zip
[root@waf source]# unzip master.zip
[root@waf source]# cd HttpGuard-master/
[root@waf HttpGuard-master]# cp guard.lua /server/conf/nginx/conf/waf/
[root@waf HttpGuard-master]# cp runtime.lua /server/conf/nginx/conf/waf/四、MySQL5.7集群（双主多从模式）
当只有两台数据库的时候，使用双主模式（互为主从）
1.修改master的mysql配置文件
[root@web1 ~]# vim /etc/my.cnf #在mysqld下新增一下配置
[mysqld]
log-bin=mysql-bin
binlog_format=mixed
server-id = 1
sync_binlog = 1
binlog_checksum = none
binlog_format = mixed
auto-increment-increment = 2
auto-increment-offset = 1
slave-skip-errors = all
[root@web1 ~]# systemctl restart mysql
[root@web1 ~]# systemctl status mysql
● mysql.service - LSB: start and stop MySQL
Loaded: loaded (/etc/rc.d/init.d/mysql; bad; vendor preset: disabled)
Active: active (exited) since Fri 2018-07-13 17:18:39 CST; 6s ago
Docs: man:systemd-sysv-generator(8)
Process: 37255 ExecStart=/etc/rc.d/init.d/mysql start (code=exited, status=0/SUCCESS)
Jul 13 17:18:39 web1 systemd[1]: Starting LSB: start and stop MySQL...
Jul 13 17:18:39 web1 mysql[37255]: Starting MySQL SUCCESS!
Jul 13 17:18:39 web1 systemd[1]: Started LSB: start and stop MySQL.
Jul 13 17:18:40 web1 mysql[37255]: 2018-07-13T09:18:40.050893Z mysqld_safe A mys...ts
Hint: Some lines were ellipsized, use -l to show in full.2.进入数据库，赋权给web2用户，让它连接主数据库同步数据
[root@web1 ~]# mysql -uroot -p000000
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.18-log Source distribution
Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> grant replication slave,replication client on *.* to web2@'192.168.0.%' identified by "000000";
Query OK, 0 rows affected, 1 warning (0.13 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.03 sec)
###查看log bin日志和post值位置
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000006 | 620 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.01 sec)
mysql>3.在slaver上修改MySQL配置文件
[root@web2 ~]# vim /etc/my.cnf
[mysqld]
server-id = 2
log-bin = mysql-bin
sync_binlog = 1
binlog_checksum = none
binlog_format = mixed
auto-increment-increment = 2
auto-increment-offset = 2
slave-skip-errors = all
[root@web2 ~]# systemctl restart mysql
[root@web2 ~]# systemctl status mysql
● mysql.service - LSB: start and stop MySQL
Loaded: loaded (/etc/rc.d/init.d/mysql; bad; vendor preset: disabled)
Active: active (running) since Fri 2018-07-13 17:29:56 CST; 20s ago
Docs: man:systemd-sysv-generator(8)
Process: 31883 ExecStart=/etc/rc.d/init.d/mysql start (code=exited, status=0/SUCCESS)
CGroup: /system.slice/mysql.service
├─31891 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/usr/local/m...
└─32461 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadi...
Jul 13 17:29:38 web2 systemd[1]: Starting LSB: start and stop MySQL...
Jul 13 17:29:56 web2 mysql[31883]: Starting MySQL................. SUCCESS!
Jul 13 17:29:56 web2 systemd[1]: Started LSB: start and stop MySQL.4.创建数据库用户用于数据库同步数据
[root@web2 ~]# mysql -uroot -p000000
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.18-log Source distribution
Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> grant replication slave,replication client on *.* to web2@'192.168.0.%' identified by "000000";
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'identiified by "000000"' at line 1
mysql> grant replication slave,replication client on *.* to web2@'192.168.0..%' identified by "000000";
Query OK, 0 rows affected, 1 warning (0.18 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000007 | 610 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.01 sec)
mysql>5.在master上同步数据库到slaver上
mysql> stop slave;
Query OK, 0 rows affected, 1 warning (0.02 sec)
mysql> change master to master_host='192.168.0.211',master_user='web2',master_password='000000',master_log_file='mysql-bin.000006',master_log_pos=620;
Query OK, 0 rows affected, 2 warnings (0.03 sec)
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status \G;
************************ 1. row *********************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.0.211
Master_User: web2
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000008
Read_Master_Log_Pos: 1110
Relay_Log_File: web1-relay-bin.000002
Relay_Log_Pos: 312
Relay_Master_Log_File: mysql-bin.000008
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 1110
Relay_Log_Space: 510
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 2
Master_UUID: ed87ba4b-8653-11e8-94fe-000c29d7dfdc
Master_Info_File: /usr/local/mysql/var/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)6.在slaver上同步master的数据库
mysql> stop slave;
Query OK, 0 rows affected, 1 warning (0.02 sec)
mysql> change master to master_host='192.168.0.230',master_user='web2',master_password='000000',master_log_file='mysql-bin.000006',master_log_pos=620;
Query OK, 0 rows affected, 2 warnings (0.03 sec)
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status \G;
********************* 1. row ************************
Slave_IO_State: Connecting to master
Master_Host: 192.168.0.230
Master_User: web1
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000010
Read_Master_Log_Pos: 1110
Relay_Log_File: web2-relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.000010
Slave_IO_Running: Yes
Slave_SQL_Running: Yes7.在master的数据库上创建数据库和表
mysql> create database leotest;
Query OK, 1 row affected (0.00 sec)
mysql> use leotest;
Database changed
mysql> create table test(id int(4),name varchar(10));
Query OK, 0 rows affected (0.04 sec)
mysql> show tables ;
+-------------------+
| Tables_in_leotest |
+-------------------+
| test |
+-------------------+
1 row in set (0.00 sec)
mysql>8.在slaver上查看同步的数据
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| leotest |
| mysql |
| performance_schema |
| sys |
+--------------------+
5 rows in set (0.00 sec)
mysql>