squid.3.3.4配置限制访问域名
1：允许用户访问某些域名，我测试环境只写了一个;# cat acl.txt
s0.hao123img.com
http://blog.运维网.com/attachment/201305/010826380.png
http://blog.运维网.com/attachment/201305/010953140.png
测试环境：修改本地host文件，指定上面2个域名对应一个IP;
acl aclname dstdomain"/app/squid/etc/acl.txt"
http_access allow aclname
http_access denyall
2：允许用户访问png格式图片配置：
acl allow_sitesurlpath_regex -i \.png$
http_access allow allow_sites
http_access deny all
效果图：
http://blog.运维网.com/attachment/201305/003623671.png
官方文档介绍：
# #h1:m1 must be less than h2:m2
#
# acl aclname url_regex [-i] ^http:// ...
# # regex matching on whole URL
# acl aclname urllogin [-i] [^a-zA-Z0-9] ...
# # regex matching on URL login field
# acl aclname urlpath_regex [-i] \.gif$ ...
# # regex matching on URL path
#
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