# NETWORK OPTIONS(有关的网络选项) # -----------------------------------------------------------------------------
http_port 3128 #代理端口
# OPTIONS WHICH AFFECT THE NEIGHBOR SELECTION ALGORITHM(作用于邻居选择算法的有关选项)
#-----------------------------------------------------------------------------
#禁止缓存
hierarchy_stoplist cgi-bin ?
hierarchy_stoplist -i ^https:\ ?
acl QUERY urlpath_regex -i cgi-bin \? \.asp \.php \.jsp \.cgi
acl denyssl urlpath_regex -i ^https:\
no_cache deny QUERY
no_cache deny denyssl
# OPTIONS WHICH AFFECT THE CACHE SIZE(定义cache大小的选项)
# -----------------------------------------------------------------------------
cache_mem 8 MB #额外使用内存量,可根据你的系统内存在设定,一般为实际内存的1/3
cache_swap_low 90 #最低缓存百分比
cache_swap_high 95 ##最高缓存百分比,就是上面那个额外内存的使用百分比
maximum_object_size 4096 KB #单个文件最大缓存大小,超过这个大小将不缓存
maximum_object_size_in_memory 8 KB #在内存中单个文件最大缓存大小,超过这个大小将不缓存到内存中
#有DNS正反解所得到的IP存在缓存区的大小,这样可以加快解析速度
ipcache_size 1024
ipcache_low 90
ipcache_high 95
fqdncache_size 1024
# LOGFILE PATHNAMES AND CACHE DIRECTORIES(定义日志文件的路径及cache的目录)
# -----------------------------------------------------------------------------
cache_dir aufs /Cache1 100 16 256
cache_dir aufs /Cache2 100 16 256
#日志存放位置
cache_aclearcase/" target="_blank" >ccess_log /usr/local/squid/var/logs/access.log
cache_log /usr/local/squid/var/logs/cache.log
# TAG: cache_store_log
cache_store_log /usr/local/squid/var/logs/store.log
# TAG: pid_filename
pid_filename /usr/local/squid/var/logs/squid.pid
# OPTIONS FOR EXTERNAL SUPPORT PROGRAMS(外部支持程序选项)
# -----------------------------------------------------------------------------
#用代理登陆匿名ftp服务选项
# TAG: ftp_user
ftp_user Squid@ #用户名
ftp_passive on #被动模式
#认证
#auth_param basic children 5
#auth_param basic realm Squid proxy-caching web server
#auth_param basic credentialsttl 2 hours
#auth_param basic casesensitive off
# OPTIONS FOR TUNING THE CACHE(调整cache的选项)
# -----------------------------------------------------------------------------
# TAG: refresh_pattern Cache更新时间设置
#<refresh_pattern> <regex> <最小时间> <百分比> <最大时间>
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
#上面第一行如果网址开头是 ftp 的话,那么在一天(1440分钟)后,
#如果proxy 再次取用这个档案时,则 cache 内的数据会被更新!
# TIMEOUTS (超时)
# -----------------------------------------------------------------------------
#连接到其他机器的最大尝试时间
connect_timeout 1 minute
#连接到上层代理的超时时间
peer_connect_timeout 30 seconds
#返回超时
request_timeout 2 minutes
#持续连接时间
persistent_request_timeout 1 minute
# ACCESS CONTROLS(访问控制)
# -----------------------------------------------------------------------------
# TAG: acl
#Examples:
#acl myexample dst_as 1241
#acl password proxy_auth REQUIRED
#acl fileupload req_mime_type -i ^multipart/form-data$
#acl javascript rep_mime_type -i ^application/x-javascript$
#
#Recommended minimum configuration:
acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl to_localhost dst 127.0.0.0/8
acl SSL_ports port 443 563
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 563 # https, snews
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
acl inside src 192.168.0.0/24 #内部网IP段
acl localmac arp "/usr/local/squid/localmac" #mac地址文件
# TAG: http_access
http_access allow inside #允许inside规则通过
#http_access allow localmac #允许localmac里面有登记的mac地址通过
#
#Recommended minimum configuration:
#
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager
# Deny requests to unknown ports
http_access deny !Safe_ports
# Deny CONNECT to other than SSL ports
http_access deny CONNECT !SSL_ports
#
#http_access deny to_localhost
#
# And finally deny all other access to this proxy
http_access deny all
# TAG: http_reply_access
http_reply_access allow all
# TAG: icp_access
#icp_access allow all
# TAG: cache_peer_access
# ADMINISTRATIVE PARAMETERS(管理参数)
# -----------------------------------------------------------------------------
# TAG: cache_mgr
cache_mgr webmaster@localhost #管理员信箱
# TAG: cache_effective_user
cache_effective_user squid #运行squid时的用户
cache_effective_group squid #运行squid时的组
# TAG: visible_hostname
visible_hostname ProxyServer #代理服务器名称
# OPTIONS FOR THE CACHE REGISTRATION SERVICE(cache注册服务选项)
# -----------------------------------------------------------------------------
# HTTPD-ACCELERATOR OPTIONS(HTTPD加速选项)
# -----------------------------------------------------------------------------
#设定透明代理
httpd_accel_host ProxyServer #主机名
httpd_accel_port 80 #透明代理端口
httpd_accel_with_proxy on
httpd_accel_uses_host_header on
# MISCELLANEOUS(杂项)
# -----------------------------------------------------------------------------
# TAG: logfile_rotate
logfile_rotate 4
# TAG: forwarded_for on|off
#关闭此项将在访问某些论坛时显示的IP是unknown,
#如果打开则显示的是你client的内网IP
forwarded_for off
#图标文件目录
# icon_directory /usr/local/squid/share/icons
#错误提示文件目录
# error_directory /usr/local/squid/share/errors/Simplify_Chinese
# TAG: snmp_port
# Squid can now serve statistics and status information via SNMP.
# By default it listens to port 3401 on the machine. If you don't
# wish to use SNMP, set this to "0".
#
#Default:
# snmp_port 3401
# TAG: snmp_access
# Allowing or denying access to the SNMP port.
#
# All access to the agent is denied by default.
# usage:
#
# snmp_access allow|deny [!]aclname ...
#
#Example:
# snmp_access allow snmppublic localhost
# snmp_access deny all
#
#Default:
# snmp_access deny all
# DELAY POOL PARAMETERS (all require DELAY_POOLS compilation option)(延时池参数)
# -----------------------------------------------------------------------------
# TAG: coredump_dir
#当squid突然挂掉的时候,或者突然出现什么故障的时候,将squid在内存中的资料写到硬盘中
coredump_dir /usr/local/squid/var/cache
二、设置iptables支持透明代理
#!/bin/bash
OUT_IP="221.000.000.0"
IN_IP="192.168.0.1"
echo "1" > /proc/sys/net/ipv4/ip_forward #设置转发
modprobe iptable_nat
modprobe ip_conntrack
modprobe ip_conntrack_ftp
/sbin/iptables -t nat -A POSTROUTING -j MASQUERADE #设置nat功能
iptables -t nat -A PREROUTING -i eth0 -p tcp -s 192.168.1.0/24 --dport 80 -j REDIRECT --to-ports 3128 #将所有80端口的请求都转发到suqid的3128端口上
iptables -A FORWARD -i eth1 -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -t nat -A POSTROUTING -o eth0 -s 192.168.0.0/24 -j SNAT --to-source $OUT_IP