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使用squid加快內(nèi)網(wǎng)網(wǎng)頁瀏覽速度

同事們總是抱怨上國外網(wǎng)站速度很慢,半天網(wǎng)頁都打不開,于是使用squid和ipfilter實(shí)現(xiàn)透明代理,為他們提供緩存功能 。
@ 安裝squid
為了偷懶就直接使用ports安裝,因?yàn)槲覍⑺械姆?wù)器系統(tǒng)都安裝在/s分區(qū)中,所以設(shè)置了PREFIX為/s/squid
# cd /usr/ports/www/squid
# setenv PREFIX /s/squid
# make install clean
安裝完成后編輯/s/squid/etc/squid/squid.conf,我的配置內(nèi)容如下:

########## Base control ##########
cache_mgr webmaster
cache_effective_user squid
cache_effective_group squid
visible_hostname sleepcat.3322.org
http_port 127.0.0.1:3128
icp_port 0
cache_dir ufs /usr/cache 300 16 256
cache_access_log /dev/null
cache_log /dev/null
cache_store_log /dev/null
error_Directory /s/squid/etc/squid/errors/Simplify_Chinese
icon_directory /s/squid/etc/squid/icons
mime_table /s/squid/etc/squid/mime.conf
coredump_dir /s/squid/squid/cache
pid_filename /s/squid/squid/logs/squid.pid
hosts_file /etc/hosts
unlinkd_program /s/squid/libexec/squid/unlinkd########## Performance control ##########
cache_mem 8 MB
cache_swap_low 90
cache_swap_high 95
maximum_object_size 4096 KB
minimum_object_size 0 KB
maximum_object_size_in_memory 8 KB
ipcache_size 1024
ipcache_low 90
ipcache_high 95
fqdncache_size 1024
cache_replacement_policy lru
memory_replacement_policy lru
emulate_httpd_log off
log_ip_on_direct on
log_mime_hdrs off
dns_timeout 2 minutes
request_header_max_size 10 KB
request_body_max_size 0 KB
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
negative_ttl 5 minutes
positive_dns_ttl 6 hours
negative_dns_ttl 1 minute
connect_timeout 1 minute
read_timeout 15 minutes
request_timeout 5 minutes
clIEnt_lifetime 1 day
half_closed_clients on
maximum_single_addr_tries 1
uri_whitespace strip
ie_refresh off
########## Access control ############
acl all src 0.0.0.0/0.0.0.0
http_access allow all
http_reply_access allow all
hierarchy_stoplist cgi-bin ?
########## Accelator control ############
httpd_accel_host virtual
httpd_accel_port 80
httpd_accel_with_proxy on
httpd_accel_uses_host_header on
########## Misc control ###########
ftp_user Squid@
ftp_list_width 32
ftp_passive on
ftp_sanitycheck on


【使用squid加快內(nèi)網(wǎng)網(wǎng)頁瀏覽速度】初始化cache
# /s/squid/sbin/squid -z啟動(dòng)squid
# /s/squid/etc/rc.d/squid.sh start@ 設(shè)置ipfilter
為了實(shí)現(xiàn)透明的功能,需要將所有對(duì)80端口的請(qǐng)求轉(zhuǎn)到squid的3128端口上,以實(shí)現(xiàn)對(duì)客戶端透明的功能 。在/etc/ipnat.rules中加入:
rdr fxp1 0.0.0.0/0 port 80 -> 127.0.0.1 3128

刷新ipnat配置:
# ipnat -Cf /etc/ipnat.rules
一切完成,客戶端無需任何設(shè)置,根本感覺不到代理的存在,而且訪問速度明顯變快 。

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