Haproxy基于ACL做访问控制

Haproxy基于ACL做访问控制

• haproxy配置文档 https://cbonte.github.io/haproxy-dconv/

基于ACL做访问控制（四层代理）

网络拓扑

环境

前端HAProxy 172.16.253.108
后端web1    172.16.253.105
后端web2    172.16.252.1
client      172.16.253.177

安装HAproxy

HAproxy

[root@HAProxy ~]# yum install haproxy -y
[root@HAProxy ~]# rpm -ql haproxy
[root@HAProxy ~]# iptables -F
[root@HAProxy ~]# setenforce 0
[root@HAProxy ~]# systemctl enable haproxy
[root@HAProxy ~]# cp /etc/haproxy/haproxy.cfg{,.bak}
[root@HAProxy ~]# vim /etc/haproxy/haproxy.cfg

web1

[root@web1 ~]# yum -y install httpd
[root@web1 ~]# vim /var/www/html/index.html 
 Backend Server 1 
[root@web1 ~]# systemctl start httpd
[root@web1 ~]# setenforce 0
[root@web1 ~]# iptables -F

web2

[root@web2 ~]# yum -y install httpd
[root@web2 ~]# vim /var/www/html/index.html 
 Backend Server 2 
[root@web2 ~]# service httpd start 
[root@web2 ~]# setenforce 0
[root@web2 ~]# iptables -F

• block阻塞主机访问
  172.16.251.196用户访问stats状态界面，并显示错误网页http://172.16.253.108:10080/403.html

HAproxy

[root@HAProxy ~]# vim /etc/haproxy/haproxy.cfg
    frontend myweb *:80
        default_backend websrvs

    backend websrvs
        balance roundrobin
        server srv1 172.16.253.105:80 check weight 2
        server srv2 172.16.252.1:80 check weight 1
    listen stats
        bind *:9000
        acl allowstats src 172.16.251.196
        block if allowstats  \\阻塞allowstats中的IP访问stats界面
        errorloc 403 http://172.16.253.108:10080/403.html
        stats enable
        stats uri /myproxy?admin
        stats realm "HAProxy Stats Page"
        stats auth admin:admin
        stats admin if TRUE
[root@HAProxy ~]# systemctl restart haproxy 

访问测试

172.16.251.196使用浏览器访问测试http://172.16.253.108:10080/403.html

• http-request允许某主机访问stats状态界面
  允许172.16.251.196用户访问http://172.16.253.108服务器的HAProxy的状态界面

HAProxy

[root@HAProxy ~]# vim /etc/haproxy/haproxy.cfg
    frontend myweb *:80
        default_backend websrvs

    backend websrvs
        balance roundrobin
        server srv1 172.16.253.105:80 check weight 2
        server srv2 172.16.252.1:80 check weight 1
    listen stats
        bind *:9000
        acl allowstats src 172.16.251.196
        # http-request allow if allowstats  \\允许allowstats中的IP访问stats状态界面
        http-request deny  unless allowstats \\除了allowstats之外全部拒绝访问，即仅允许allowstats访问
        # http-request deny if allowstats \\拒绝allowstats访问
        errorloc 403 http://172.16.253.108:10080/403.html \\错误网页文件
        stats enable
        stats uri /myproxy?admin
        stats realm "HAProxy Stats Page"
        stats auth admin:admin
        stats admin if TRUE
[root@HAProxy ~]# systemctl restart haproxy 

访问测试

图形化浏览器
    172.16.251.196使用浏览器访问测试http://172.16.253.108:10080/403.html    
字符界面 
    [root@client ~]# curl --basic --user admin:admin http://172.16.253.108:9000/myproxy?admin   

基于ACL做访问控制（七层代理）

动态网页存放在动态服务器组中，静态网页存放在静态服务器组中

拓扑环境

环境

前端HAProxy 172.16.253.108
后端web1    172.16.253.105
后端web2    172.16.253.191
client      172.16.253.177

• web1使用虚拟主机技术搭建两个web server，用来存放动态网页内容
• web2使用虚拟主机搭建两个web server用来替代静态网页内容

web1创建虚拟主机

[root@web1 ~]# yum -y install php httpd
[root@web1 ~]# mkdir /data/web/vhost{1,2} -pv
[root@web1 ~]# vim /data/web/vhost1/index.php
 Application Server 1

[root@web1 ~]# vim /data/web/vhost2/index.php
 Application Server 2


虚拟主机1的配置文件
[root@web1 ~]# vim /etc/httpd/conf.d/vhost1.conf \\编辑vhost1虚拟主机的配置文件

    ServerName www1.danran.com
    DocumentRoot "/data/web/vhost1"
    
            Options FollowSymLinks \\允许使用连接文件目录
            AllowOverride None \\不允许其他配置文件覆盖此文件中的设置
            Require all granted
    


虚拟主机2的配置文件
[root@web1 ~]# vim /etc/httpd/conf.d/vhost2.conf
[root@web1 ~]# vim /etc/httpd/conf.d/vhost2.conf
Listen 8080

    ServerName www2.danran.com
    DocumentRoot "/data/web/vhost2"
    
            Options FollowSymLinks
            AllowOverride None
            Require all granted
    


[root@web1 ~]# systemctl restart httpd.service 
[root@web1 ~]# ss -ntl

web2创建虚拟主机

[root@web2 ~]# yum -y install httpd
[root@web2 ~]# mkdir -pv /data/web/vhost{1,2}
[root@web2 ~]# find /usr/share/ -iname "*.jpg" -exec cp {} /data/web/vhost1/ \;
[root@web2 ~]# find /usr/share/ -iname "*.jpg" -exec cp {} /data/web/vhost2/ \;
[root@web2 ~]# vim /data/web/vhost1/index.html
 Image Server 1 
[root@web2 ~]# vim /data/web/vhost2/index.html
 Image Server 2 

编辑虚拟主机1的配置文件
[root@web2 ~]# vim  /etc/httpd/conf.d/vhost1.conf 

    ServerName www1.danran.com
    DocumentRoot "/data/web/vhost1"
    
            Options FollowSymLinks
            AllowOverride None
            Require all granted
    


编辑虚拟主机2的配置文件
[root@web2 ~]# vim  /etc/httpd/conf.d/vhost2.conf 
Listen 8080

    ServerName www2.danran.com
    DocumentRoot "/data/web/vhost1"
    
            Options FollowSymLinks
            AllowOverride None
            Require all granted
    


[root@web2 ~]# systemctl start httpd.service 

HAproxy

[root@HAProxy ~]# vim /etc/haproxy/haproxy.cfg
    frontend myweb *:80
        cookie WEBSRV indirect nocache
        acl static path_end .jpg .jpeg .png .gif .txt .html \\定义ACL的组static以.jpg .jpeg .png .gif .txt .html结尾的文件
        use_backend staticsrvs  if static  \\当符合条件时使用static主机组
        default_backend dynsrvs  \\当不符合use_bckend条件时使用默认default_backend主机组

        backend dynsrvs \\定义动态主机组
            balance roundrobin
            server dynsrv1 172.16.253.105:80 check cookie dynsrv1
            server dynsrv2 172.16.253.105:8080 check cookie dynsrv2
        backend staticsrvs  \\定义静态主机组
            balance roundrobin
            server staticsrv1 172.16.253.191:80 check
            server staticsrv2 172.16.253.191:8080 check
[root@HAProxy ~]# systemctl restart haproxy

client

[root@client ~]# curl http://172.16.253.108/index.html
 Image Server 1 
[root@client ~]# curl http://172.16.253.108/index.html
 image Server 2 
[root@client ~]# curl http://172.16.253.108/index.php
 Application Server 2
[root@client ~]# curl http://172.16.253.108/index.php
 Application Server 2

拒绝curl访问web

HAproxy

[root@HAProxy ~]# vim /etc/haproxy/haproxy.cfg
    frontend myweb *:80
        cookie WEBSRV indirect nocache
        acl static path_end .jpg .jpeg .png .gif .txt .html \\定义ACL的组static以.jpg .jpeg .png .gif .txt .html结尾的文件
        use_backend staticsrvs  if static  \\当符合条件时使用static主机组
        default_backend dynsrvs  \\当不符合use_bckend条件时使用默认default_backend主机组
        acl bad_browsers hdr_reg(User-Agent) .*curl.* \\定义请求报文中包含curl的ACL组为bad_browsers
        block if bad_browsers \\阻塞bad_browsers组的访问

        backend dynsrvs \\定义动态主机组
            balance roundrobin
            server dynsrv1 172.16.253.105:80 check cookie dynsrv1
            server dynsrv2 172.16.253.105:8080 check cookie dynsrv2
        backend staticsrvs  \\定义静态主机组
            balance roundrobin
            server staticsrv1 172.16.253.191:80 check
            server staticsrv2 172.16.253.191:8080 check
[root@HAProxy ~]# systemctl restart haproxy

client

[root@client ~]# curl http://172.16.253.108/index.html
403 Forbidden
Request forbidden by administrative rules.

定义仅允许cxjing.com域内的主机访问

HAproxy

[root@HAProxy ~]# vim /etc/haproxy/haproxy.cfg
    frontend myweb *:80
        cookie WEBSRV indirect nocache
        acl static path_end .jpg .jpeg .png .gif .txt .html \\定义ACL的组static以.jpg .jpeg .png .gif .txt .html结尾的文件
        use_backend staticsrvs  if static  \\当符合条件时使用static主机组
        default_backend dynsrvs  \\当不符合use_bckend条件时使用默认default_backend主机组
        acl valid_referers hdr_reg(Referer) \.cxjing\.com
        block unless valid_referers \\阻塞除了valid_referers组之外的所有人的访问

        backend dynsrvs \\定义动态主机组
            balance roundrobin
            server dynsrv1 172.16.253.105:80 check cookie dynsrv1
            server dynsrv2 172.16.253.105:8080 check cookie dynsrv2
        backend staticsrvs  \\定义静态主机组
            balance roundrobin
            server staticsrv1 172.16.253.191:80 check
            server staticsrv2 172.16.253.191:8080 check
[root@HAProxy ~]# systemctl restart haproxy

client

模拟www.cxjing.com主机访问
[root@client ~]# curl -e "http://www.cxjing.com/index.php" http://172.16.253.108/index.php 
 Application Server 2