文章目录
1. 服务器配置
服务器 | 主机名 | IP 地址 | 主要软件 |
---|---|---|---|
Squid 服务器 | squid_server | 192.168.10.20 | squid |
Web 服务器 | web_server | 192.168.10.30 | apache |
Win10 客户端 | 192.168.10.85 | edge 浏览器 |
2. Squid 服务器配置
(1) 修改 Squid 配置文件
squid 安装参考:
https://blog.csdn.net/shenyuanhaojie/article/details/121123525
vim /etc/squid.conf
# And finally deny all other access to this proxy
http_access allow all
http_access deny all
# Squid normally listens to port 3128
http_port 3128
cache_effective_user squid
cache_effective_group squid
#63行插入
cache_mem 64 MB
#指定缓存功能所使用的内存空间大小,便于保持访问较频繁的WEB对象,容量最好为4的倍数,单位为MB,建议设为物理内存的1/4
reply_body_max_size 10 MB
#允许用户下载的最大文件大小,默认以字节为单位,当下载超过指定大小的Web对象时,浏览器的报错页面中会出现“请求或访问太大”的提示默认设置0表示不进行限制
maximum_object_size 4096 KB
#允许保存到缓存空间的最大对象大小,以KB为单位,超过大小限制的文件将不被缓存,而是直接转发给用户
常用的配置选项
http_port 3128 #监听端口 (还可以只监听一个IP http_port 192.168.0.1:3128)
cache_mem 64MB #缓存占内存大小
maximum_object_size 4096KB #最大缓存块
reply_body_max_size 1024000 allow all #限定下载文件大小
access_log /var/log/squid/access.log #访问日志存放的地方
visible_hostname proxy.test.xom #可见的主机名
cache_dir ufs /var/spool/squid 100 16 256
\#ufs:缓存数据的存储格式
\#/var/spool/squid 缓存目录
\#100:缓存目录占磁盘空间大小(M)
\#16:缓存空间一级子目录个数
\#256:缓存空间二级子目录个数
cache_mgr webmaster@test.com #定义管理员邮箱
http_access deny all #访问控制
重启服务
systemctl restart squid
(2) 修改防火墙规则
#清空原防火墙规则
iptables -F
#不指定表将默认配置filter表,设置INPUT链规则,指定协议为tcp,指定端口3128,目标动作为ACCEPT接受
iptables -I INPUT -p tcp --dport 3128 -j ACCEPT
3. Web 服务器配置
systemctl stop firewalld.service
setenforce 0
yum -y install httpd
systemctl start httpd && systemctl enable httpd
netstat -natp | grep 80
4. 客户端配置(添加代理)
win7
- 打开浏览器
- 工具
- Internet 选项
- 连接
- 局域网设置
- 开启代理服务器
- 输入地址:Squid 服务器的 IP 地址(端口 3128)
win10
- 打开浏览器
- 设置
- 系统
-
打开计算机的代理设置
- 手动设置代理
-
输入 Squid 服务器的 IP 地址:端口(192.168.10.20:3128)
- 访问测试,访问 web 服务器 IP
5. 查看 Squid 访问日志的新增记录
[root@squid_server ~]#tail -f /usr/local/squid/var/logs/access.log
1635941054.668 0 192.168.10.85 TCP_MISS/404 479 GET http://192.168.10.30/noindex/css/fonts/Light/OpenSans-Light.ttf - HIER_DIRECT/192.168.10.30 text/html
1635941054.682 1 192.168.10.85 TCP_MISS/404 448 GET http://192.168.10.30/favicon.ico - HIER_DIRECT/192.168.10.30 text/html
1635941054.861 573 192.168.10.85 TCP_TUNNEL/200 10451 CONNECT nav.smartscreen.microsoft.com:443 - HIER_DIRECT/13.67.52.249 -
1635941055.406 530 192.168.10.85 TCP_TUNNEL/200 13204 CONNECT smartscreen-prod.microsoft.com:443 - HIER_DIRECT/13.67.52.249 -
1635941076.365 120455 192.168.10.85 TCP_TUNNEL/200 16575 CONNECT img-operation.csdnimg.cn:443 - HIER_DIRECT/27.221.119.230 -
1635941084.927 125423 192.168.10.85 TCP_TUNNEL/200 77330 CONNECT edge.microsoft.com:443 - HIER_DIRECT/204.79.197.219 -
1635941088.210 128772 192.168.10.85 TCP_TUNNEL/200 6561 CONNECT edge.microsoft.com:443 - HIER_DIRECT/204.79.197.219 -
1635941136.325 180278 192.168.10.85 TCP_TUNNEL/200 4795 CONNECT bizapi.csdn.net:443 - HIER_DIRECT/39.97.4.86 -
1635941177.583 138594 192.168.10.85 TCP_TUNNEL/200 26684 CONNECT www.bing.com:443 - HIER_DIRECT/202.89.233.101 -
1635941178.794 139538 192.168.10.85 TCP_TUNNEL/200 24404 CONNECT cn.bing.com:443 - HIER_DIRECT/202.89.233.100 -
可在 windows 浏览器多刷新几次动态查看
如果显示 TCP_MISS 表示 Squid 没有请求资源的 cache 拷贝。HIER_DIRECT 将请求转发至 web 服务器。
如果显示 TCP_REFRESH_UNMODIFIED 表示 Squid 发现请求资源的貌似陈旧的拷贝,并发送确认请求到原始服务器。原始服务器响应新的内容,指示这个 cache 拷贝确实是陈旧的。因此 HIER_DIRECT 将请求转发至 web 服务器。
访问图片 TCP_MEM_HIT 表示 Squid 在内存 cache 里发现请求资源的有效拷贝,并将其立即发送到客户端。注意这点并非精确的呈现了所有从内存服务的响应。因此后面 HIER_NONE/- 将不再转发到 web 服务器。
6. 查看 Web 访问日志的新增记录
[root@web_server ~]#tail -f /var/log/httpd/access_log
192.168.10.20 - - [03/Nov/2021:20:08:01 +0800] "GET / HTTP/1.1" 403 4897 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 Edg/94.0.992.50"
192.168.10.20 - - [03/Nov/2021:20:08:01 +0800] "GET /noindex/css/fonts/Light/OpenSans-Light.woff HTTP/1.1" 404 241 "http://192.168.10.30/noindex/css/open-sans.css" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 Edg/94.0.992.50"
192.168.10.20 - - [03/Nov/2021:20:08:01 +0800] "GET /noindex/css/fonts/Bold/OpenSans-Bold.woff HTTP/1.1" 404 239 "http://192.168.10.30/noindex/css/open-sans.css" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 Edg/94.0.992.50"
可以看到访问记录来自于 squid 代理服务器,web 服务端无法得知客户的真实 IP。
关闭代理再次查看访问日志(windows 设置里关闭手动代理)
[root@web_server ~]#tail -f /var/log/httpd/access_log
192.168.10.85 - - [03/Nov/2021:20:23:00 +0800] "GET / HTTP/1.1" 403 4897 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 Edg/94.0.992.50"
192.168.10.85 - - [03/Nov/2021:20:23:00 +0800] "GET /noindex/css/fonts/Bold/OpenSans-Bold.woff HTTP/1.1" 404 239 "http://192.168.10.30/noindex/css/open-sans.css" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 Edg/94.0.992.50"
192.168.10.85 - - [03/Nov/2021:20:23:00 +0800] "GET /noindex/css/fonts/Light/OpenSans-Light.woff HTTP/1.1" 404 241 "http://192.168.10.30/noindex/css/open-sans.css" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 Edg/94.0.992.50"
可以看到访问记录来自于客户端本身。
文章目录
1. 服务器配置
服务器 | 主机名 | IP地址 | 主要软件 |
---|---|---|---|
Squid 服务器 | squid_server | 外网ens33:192.168.10.20 | 内网ens37:10.0.0.100 | squid |
Web 服务器 | web_server | 内网 10.0.0.200 | apache |
Win10 客户端 | 外网 192.168.10.85 | edge 浏览器 |
2. Squid 服务器部署
2.1 修改 Squid 配置文件
[root@squid_server ~]# vim /etc/squid.conf
# And finally deny all other access to this proxy
http_access allow all
http_access deny all
# Squid normally listens to port 3128
##60行,修改,添加提供内网服务的网卡IP地址,和支持透明代理选项transparent
http_port 192.168.10.20:3128 transparent
cache_effective_user squid
cache_effective_group squid
cache_mem 64 MB
reply_body_max_size 10 MB
maximum_object_size 4096 KB
[root@squid_server ~]# systemctl restart squid
2.2 开启路由转发,实现本机中不同网段的地址转发
[root@squid_server ~]#echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.conf
[root@squid_server ~]#sysctl -p
net.ipv4.ip_forward = 1
2.3 修改防火墙规则
[root@squid_server ~]#iptables -F
[root@squid_server ~]#iptables -t nat -F
[root@squid_server ~]#iptables -t nat -I PREROUTING -i ens33 -s 192.168.10.0/24 -p tcp --dport 80 -j REDIRECT --to 3128
#用于转发 http 协议,将访问端口重定向到 3128
[root@squid_server ~]#iptables -t nat -I PREROUTING -i ens33 -s 192.168.10.0/24 -p tcp --dport 443 -j REDIRECT --to 3128
#用于转发 https 协议,将访问端口重定向到 3128
[root@squid_server ~]#iptables -I INPUT -p tcp --dport 3128 -j ACCEPT
#定义防火墙入站规则,允许 3128 的连接请求
3. 客户端访问测试
客户端 192.168.10.85 访问 web 服务器 10.0.0.200
- 关闭手动代理
-
网关指向 squid 代理 ens33 IP
查看 Squid 访问日志的新增记录(192.168.10.20)
在客户端多刷新几次页面,查看访问情况
[root@squid_server ~]#tail -f /usr/local/squid/var/logs/access.log
1635941728.519 31737 192.168.10.85 TCP_TUNNEL/200 6844 CONNECT cp601.prod.do.dsp.mp.microsoft.com:443 - HIER_DIRECT/184.29.187.90 -
1635941729.950 28933 192.168.10.85 TCP_TUNNEL/200 6842 CONNECT cp601.prod.do.dsp.mp.microsoft.com:443 - HIER_DIRECT/184.29.187.90 -
1635941766.747 69937 192.168.10.85 TCP_TUNNEL/200 6591 CONNECT disc601.prod.do.dsp.mp.microsoft.com:443 - HIER_DIRECT/184.29.187.90 -
1635941822.746 133072 192.168.10.85 TCP_TUNNEL/200 6617 CONNECT geover.prod.do.dsp.mp.microsoft.com:443 - HIER_DIRECT/104.85.33.217 -
1635941886.914 1612 192.168.10.85 TCP_TUNNEL/200 4900 CONNECT v10.events.data.microsoft.com:443 - HIER_DIRECT/20.42.73.25 -
1635941897.422 476 192.168.10.85 TCP_TUNNEL/200 3968 CONNECT settings-win.data.microsoft.com:443 - HIER_DIRECT/40.119.249.228 -
1635941899.775 446 192.168.10.85 TCP_TUNNEL/200 4017 CONNECT settings-win.data.microsoft.com:443 - HIER_DIRECT/40.119.249.228 -
1635941912.755 11406 192.168.10.85 TCP_TUNNEL/200 4901 CONNECT v10.events.data.microsoft.com:443 - HIER_DIRECT/20.42.73.25 -
1635944385.775 0 192.168.10.20 TCP_MISS/403 4076 GET http://www.msftconnecttest.com/connecttest.txt - HIER_NONE/- text/html
1635944385.775 49 192.168.10.85 TCP_MISS/403 4137 GET http://www.msftconnecttest.com/connecttest.txt - ORIGINAL_DST/192.168.10.20 text/html
1635944910.531 3 192.168.10.85 TCP_MISS/403 5244 GET http://10.0.0.200/ - ORIGINAL_DST/10.0.0.200 text/html
1635944910.611 2 192.168.10.85 TCP_MISS/200 5405 GET http://10.0.0.200/noindex/css/open-sans.css - ORIGINAL_DST/10.0.0.200 text/css
1635944910.611 3 192.168.10.85 TCP_MISS/200 19666 GET http://10.0.0.200/noindex/css/bootstrap.min.css - ORIGINAL_DST/10.0.0.200 text/css
1635944910.649 1 192.168.10.85 TCP_MISS/200 4280 GET http://10.0.0.200/images/poweredby.png - ORIGINAL_DST/10.0.0.200 image/png
1635944910.649 1 192.168.10.85 TCP_MISS/200 2650 GET http://10.0.0.200/images/apache_pb.gif - ORIGINAL_DST/10.0.0.200 image/gif
1635944910.729 0 192.168.10.85 TCP_MISS/404 494 GET http://10.0.0.200/noindex/css/fonts/Bold/OpenSans-Bold.woff - ORIGINAL_DST/10.0.0.200 text/html
1635944910.730 0 192.168.10.85 TCP_MISS/404 496 GET http://10.0.0.200/noindex/css/fonts/Light/OpenSans-Light.woff - ORIGINAL_DST/10.0.0.200 text/html
1635944910.854 0 192.168.10.85 TCP_MISS/404 495 GET http://10.0.0.200/noindex/css/fonts/Light/OpenSans-Light.ttf - ORIGINAL_DST/10.0.0.200 text/html
1635944910.854 1 192.168.10.85 TCP_MISS/404 493 GET http://10.0.0.200/noindex/css/fonts/Bold/OpenSans-Bold.ttf - ORIGINAL_DST/10.0.0.200 text/html
1635944910.879 1 192.168.10.85 TCP_MISS/404 464 GET http://10.0.0.200/favicon.ico - ORIGINAL_DST/10.0.0.200 text/html
可以看到前面几次的访问较慢,后面速度较快,因为后面访问直接返回的 squid 服务器中的缓存数据,客户端的响应速度得到了很大的提升。
查看 Web 访问日志的新增记录(10.0.0.200)
[root@web_server ~]#tail -f /var/log/httpd/access_log
10.0.0.100 - - [03/Nov/2021:21:08:33 +0800] "GET / HTTP/1.1" 403 4897 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Edg/95.0.1020.40"
10.0.0.100 - - [03/Nov/2021:21:08:33 +0800] "GET /noindex/css/fonts/Light/OpenSans-Light.woff HTTP/1.1" 404 241 "http://10.0.0.200/noindex/css/open-sans.css" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Edg/95.0.1020.40"
10.0.0.100 - - [03/Nov/2021:21:08:33 +0800] "GET /noindex/css/fonts/Bold/OpenSans-Bold.woff HTTP/1.1" 404 239 "http://10.0.0.200/noindex/css/open-sans.css" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Edg/95.0.1020.40"
10.0.0.100 - - [03/Nov/2021:21:08:33 +0800] "GET /noindex/css/fonts/Bold/OpenSans-Bold.ttf HTTP/1.1" 404 238 "http://10.0.0.200/noindex/css/open-sans.css" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Edg/95.0.1020.40"
10.0.0.100 - - [03/Nov/2021:21:08:33 +0800] "GET /noindex/css/fonts/Light/OpenSans-Light.ttf HTTP/1.1" 404 240 "http://10.0.0.200/noindex/css/open-sans.css" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Edg/95.0.1020.40"
10.0.0.100 - - [03/Nov/2021:21:08:33 +0800] "GET / HTTP/1.1" 403 4897 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Edg/95.0.1020.40"
10.0.0.100 - - [03/Nov/2021:21:08:33 +0800] "GET /noindex/css/fonts/Light/OpenSans-Light.woff HTTP/1.1" 404 241 "http://10.0.0.200/noindex/css/open-sans.css" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Edg/95.0.1020.40"
10.0.0.100 - - [03/Nov/2021:21:08:33 +0800] "GET /noindex/css/fonts/Bold/OpenSans-Bold.woff HTTP/1.1" 404 239 "http://10.0.0.200/noindex/css/open-sans.css" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Edg/95.0.1020.40"
10.0.0.100 - - [03/Nov/2021:21:08:33 +0800] "GET /noindex/css/fonts/Light/OpenSans-Light.ttf HTTP/1.1" 404 240 "http://10.0.0.200/noindex/css/open-sans.css" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Edg/95.0.1020.40"
10.0.0.100 - - [03/Nov/2021:21:08:33 +0800] "GET /noindex/css/fonts/Bold/OpenSans-Bold.ttf HTTP/1.1" 404 238 "http://10.0.0.200/noindex/css/open-sans.css" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Edg/95.0.1020.40"
访问记录来自于 squid 代理服务器的外网卡,代理服务器的外网口代替客户机在访问,使得 web 服务端无法得知客户的真实 IP。