squid 安装，配置
更新库：apt-get update
安装：apt-get install squid squid-common
ubuntu 12.04 安装的 squid3
配置和开启
配置文件：vi /etc/squid.conf
3.1监听端口
http_port 3128
3.2 访问控制
http_access allow all
3.3开启squid3
3.3.1 初始化squid.conf里的cache目录
/usr/sbin/squid3 -z
3.3.2 对squid.conf进行排错
/usr/sbin/squid3 -k parse
3.3.3 前台启动squid3
/usr/sbin/squid3 -N -d1
3.3.4后台运行squid3
/usr/sbin/squid3 -s
3.3.5 停止
/usr/sbin/squid3 -k shutdown
3.3.5 重新引导修改过的squid.conf
/usr/sbin/squid3 -k reconfigure
配置：
# Recommended minimum configuration: # acl manager proto cache_object acl localhost src 127.0.0.1/32 ::1 acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1 # Example rule allowing access from your local networks. # Adapt to list your (internal) IP networks from where browsing # should be allowed #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 ##auth_param basic program <uncomment and complete this line> auth_param basic program /usr/lib/squid3/ncsa_auth /etc/squid3/passwd auth_param basic children 5 ##auth_param basic realm Squid proxy-caching web server auth_param basic casesensitive off auth_param basic credentialsttl 2 hours #Default: # none ## zi ding yi pei zhi acl auth_user proxy_auth REQUIRED #default: # http_access deny all # http_access allow auth_user # # recommended minimum access permission configuration: # # only allow cachemgr access from localhost http_access allow manager localhost http_access deny manager # 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 # 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 # Squid normally listens to port 3128 http_port 3128 #Default: # coredump_dir none # # Leave coredumps in the first cache dir coredump_dir /var/spool/squid3 # Add any of your own refresh_pattern entries above these. refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 refresh_pattern (Release|Packages(.gz)*)$ 0 20% 2880 # example lin deb packages #refresh_pattern (\.deb|\.udeb)$ 129600 100% 129600 refresh_pattern . 0 20% 4320
#缓存服务器的名字，可以任意
visible_hostname 80sds
auth_param basic program /usr/lib/squid/ncsa_auth /opt/squid/etc/passwd
#定义了认证方式为basic，认证程序的路径和认证程度需要读取的帐户文件
auth_param basic children 5
#此选项定义了认证程序的进程为5个
auth_param basic credentialsttl 2 hours
#定义了认证程序的时间为2小时，如果2小时过后用户还需要使用squid,则必须重新输入帐户和密码
auth_param basic realm Please input account
#定义了用户的登录时显示的领域内容（信息），类似于Apache的用户认证
auth_param basic casesensitive off
#指定是否区分用户名大小写，on为区分，off为不区分。
acl auth_user proxy_auth REQUIRED
# 强制要求用户验证
http_access allow auth_user
#普通用户需要认证才能访问internet，允许经过认证的用户访问。