CentOS7.2搭建代理服务器

CentOS7.2搭建代理服务器

 

有时候内网很多机器都不能上外网，只能开放几个特定ip访问外网， 那么可以在这个可以上外网的机器上面搭建代理服务器，其他机器配置好代理就能上网了。

不管是测试用途还是自己使用，squid都是一个很不错的代理工具。支持正向代理、反向代理、还有透明代理。 本篇演示搭建了一个简单的squid的正向代理，同时支持认证，随便记记笔记。

安装

1 yum install squid -y

2 yum install httpd-tools -y

 

生成密码文件

mkdir /etc/squid3/

htpasswd -cd /etc/squid3/passwords mybai

##提示输入密码，在这里我输入是123456，注意密码不要超过8位

 

生成密码文件

/usr/lib64/squid/basic_ncsa_auth /etc/squid3/passwords

# 输入 用户名 密码

my-bai 123456

# 提示OK说明成功，ERR是有问题，请检查一下之前步骤

OK

 

# 测试完成，crtl + c 打断

 

配置

 

 

# 在最后添加

vim /etc/squid/squid.conf

auth_param basic program /usr/lib64/squid/basic_ncsa_auth /etc/squid3/passwords

auth_param basic realm proxy

acl authenticated proxy_auth REQUIRED

http_access allow authenticated

 

# 这里是端口号，可以按需修改

# http_port 3128 这样写会同时监听ipv6和ipv4的端口，推荐适应下面的配置方法。

http_port 0.0.0.0:3128

squid的权限控制很灵活，具体配置方法可以参考 官方文档， 或者 Squid中文权威指南， 具体工作原理有点像iptables，用规则去卡控流量。默认的配置只能允许内网用户访问，如果有更多需求，你还可以指定很多规则！权限控制

下面是我的配置实例：

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# Example rule allowing access from your local networks. # Adapt to list your (internal) IP networks from where browsing # should be allowed acl all src all # RFC1918 possible internal network 全部开放 acl localnet src 10.0.0.0/8 # RFC1918 possible internal network acl localnet src 172.16.0.0/12 # RFC1918 possible internal network acl localnet src 192.168.0.0/16 # RFC1918 possible internal network acl localnet src fc00::/7 # RFC 4193 local private network range acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines   acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT   # # Recommended minimum Access Permission configuration: # # Deny requests to certain unsafe ports http_access deny !Safe_ports   # Deny CONNECT to other than secure SSL ports http_access deny CONNECT !SSL_ports   # Only allow cachemgr access from localhost http_access allow localhost manager http_access deny manager   # We strongly recommend the following be uncommented to protect innocent # web applications running on the proxy server who think the only # one who can access services on "localhost" is a local user #http_access deny to_localhost   # # INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS #   # Example rule allowing access from your local networks. # Adapt localnet in the ACL section to list your (internal) IP networks # from where browsing should be allowed http_access allow localnet http_access allow localhost   # And finally deny all other access to this proxy http_access deny all

 

日志

squid的日志默认是打开的，位于目录/var/log/squid/，当然这个地址还有日志的格式都是可以完全自定义的

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[root@controller161 ~]# ll /var/log/squid/ total 496 -rw-r----- 1 squid squid 355208 May 6 12:17 access.log -rw-r----- 1 squid squid 1846 Jul 10 2016 access.log-20160710.gz -rw-r----- 1 squid squid 3710 Jul 15 2016 access.log-20160718.gz -rw-r----- 1 squid squid 125341 May 4 15:19 cache.log -rw-r----- 1 squid squid 1325 Jul 9 2016 cache.log-20160710.gz -rw-r----- 1 squid squid 1110 Jul 14 2016 cache.log-20160718.gz

 

启动服务

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# 开启启动 systemctl enable squid.service # 启动 systemctl start squid.service # 停止 systemctl stop squid.service # 重启 systemctl restart squid.service

代理服务器设置

在其他CentOS机器上面配置各种代理方法

全局代理

vim /etc/profile，在最后加入

1 2	export http_proxy= "http://username:password@proxy_ip:port" export https_proxy= "http://username:password@proxy_ip:port"

yum代理设置

编辑/etc/yum.conf，在最后加入

1 2	# Proxy proxy=http://username:password@proxy_ip:port/

 

wget的代理设置

编辑/etc/wgetrc，在最后加入

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# Proxy http_proxy=http://username:password@proxy_ip:port/ https_proxy=http://username:password@proxy_ip:port/ ftp_proxy=http://username:password@proxy_ip:port/

 

curl的代理设置

在~/.bashrc里面增加一个别名:

1	alias curl= "curl -x http://username:password@proxy_ip:port"

 

另外一种方法是编辑~/.curlrc文件 (没有就创建一个):

1	proxy = http://username:password@proxy_ip:port