squid反向代理实现

Question

squid。conf的配置如下：

cache_effective_user squid
cache_effective_group squid
maximum_object_size 10 MB
maximum_object_size 512 KB
cache_mem 256 MB
cache_dir ufs /usr/local/squid/var/cache 500 16 256
cache_log /usr/local/squid/var/logs/cache.log
cache_swap_log /usr/local/squid/var/logs/swap.log
#***********************
acl manager proto cache_object
acl localhost src 127.0.0.1/32
acl to_localhost dst 127.0.0.0/8
acl Safe_ports port 8082
visible_hostname 10.57.21.200
http_access allow manager localhost
http_access deny manager
http_access deny to_localhost
http_access deny !Safe_ports
http_access deny all
http_port 8082 vhost vport defaultsite=sina.com.cn
hierarchy_stoplist cgi-bin ?
access_log /usr/local/squid/var/logs/access.log
refresh_pattern ^ftp:                   1440    20%     10080
refresh_pattern ^gopher:                1440    0%      1440
refresh_pattern -i (/cgi-bin/|?)       0       0%      0
refresh_pattern .                       0       20%     4320
icp_port 0
log_icp_queries off
coredump_dir /usr/local/squid/var/cache
  高手来指点下菜鸟了，是否能实现反向代理