squid iptables透明代理

# 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，可根据您的系统内存在设定，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 #单个文档最大缓存大小，超过这个大小将不缓存

maximum_object_size_in_memory 8 KB #在内存中单个文档最大缓存大小，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，这样能够加快解析速度
ipcache_size 1024
ipcache_low 90
ipcache_high 95
fqdncache_size 1024


# LOGFILE PATHNAMES AND CACHE DIRECTORIES(定义日志文档的路径及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_access_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(外部支持程式选项）
# -----------------------------------------------------------------------------

#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更新时间配置
#<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

#上面第一行假如网址开头是 ftp 的话，那么在一天(1440分钟)后，
#假如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地址文档

# 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