Haproxy基于ACL做访问控制

2023-01-20 11:36:32

author：JevonWei

版权声明：原创作品

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

<h1> Backend Server 1 </h1>

[root@web1 ~]# systemctl start httpd

[root@web1 ~]# setenforce 0

[root@web1 ~]# iptables -F

web 2

[root@web2 ~]# yum -y install httpd

[root@web2 ~]# vim /var/www/html/index.html

<h1> Backend Server 2 </h1>

[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荣容
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

<h1> Application Server 1</h1>

<?php

    phpinfo();

?>

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

<h1> Application Server 2</h1>

<?php

    phpinfo();

?>

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

<VirtualHost *:80>

    ServerName www1.danran.com

    DocumentRoot "/data/web/vhost1"

    <Directory "/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

    </Directory>

</VirtualHost>

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

<VirtualHost *:8080>

    ServerName www2.danran.com

    DocumentRoot "/data/web/vhost2"

    <Directory "/data/web/vhost2">

            Options FollowSymLinks

            AllowOverride None

            Require all granted

    </Directory>

</VirtualHost>

[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

<h1> Image Server 1 </h1>

[root@web2 ~]# vim /data/web/vhost2/index.html

<h1> Image Server 2 </h1>

编辑虚拟主机1的配置文件

[root@web2 ~]# vim  /etc/httpd/conf.d/vhost1.conf

<VirtualHost *:80>

    ServerName www1.danran.com

    DocumentRoot "/data/web/vhost1"

    <Directory "/data/web/vhost1">

            Options FollowSymLinks

            AllowOverride None

            Require all granted

    </Directory>

</VirtualHost>

编辑虚拟主机2的配置文件

[root@web2 ~]# vim  /etc/httpd/conf.d/vhost2.conf

Listen 8080

<VirtualHost *:8080>

    ServerName www2.danran.com

    DocumentRoot "/data/web/vhost1"

    <Directory "/data/web/vhost1">

            Options FollowSymLinks

            AllowOverride None

            Require all granted

    </Directory>

</VirtualHost>

[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

<h1> Image Server 1 </h1>

[root@client ~]# curl http://172.16.253.108/index.html

<h1> image Server 2 </h1>

[root@client ~]# curl http://172.16.253.108/index.php

<h1> Application Server 2</h1>

[root@client ~]# curl http://172.16.253.108/index.php

<h1> Application Server 2</h1>

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

<html><body><h1>403 Forbidden</h1>

Request forbidden by administrative rules.

</body></html>

定义仅允许danran.com域内的的主机访问

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) \.danran\.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.danran.com主机访问

[root@client ~]# curl -e "http://www.danran.com/index.php" http://172.16.253.108/index.php

<h1> Application Server 2</h1>

码农公寓

基于ACL做访问控制(四层代理)

安装HAProxy

基于ACL做访问控制(七层代理)

拒绝curl访问web

定义仅允许danran.com域内的的主机访问

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