原文地址： http://www.wenzizone.cn/?p=311
squid2.6可以使用header_access来控制显示与隐藏http的header信息，但是在squid3.0版本中这个参数是用不了的，所以如果要在3.0中隐藏http的header信息的话，就需要使用另外一个参数：reply_header_access
此参数的使用和header_access的类似，比如要隐藏VIA头信息，设置如下
reply_header_access Via deny all
如果需要隐藏其他的信息，可以参考上面的例子，把对应的header更改了就行，http的header信息如下
Accept HTTP_ACCEPT
Accept-Charset HTTP_ACCEPT-CHARSET
Accept-Encoding HTTP_ACCEPT-ENCODING
Accept-Language HTTP_ACCEPT-LANGUAGE
Accept-Ranges HTTP_ACCEPT-RANGES
Age HTTP_AGE
Allow HTTP_ALLOW
Authorization HTTP_AUTHORIZATION
Cache-Control HTTP_CACHE-CONTROL
Connection HTTP_CONNECTION
Content-Base HTTP_CONTENT-BASE
Content-Disposition HTTP_CONTENT-DISPOSITION
Content-Encoding HTTP_CONTENT-ENCODING
Content-Language HTTP_CONTENT-LANGUAGE
Content-Length HTTP_CONTENT-LENGTH
Content-Location HTTP_CONTENT-LOCATION
Content-MD5 HTTP_CONTENT-MD5
Content-Range HTTP_CONTENT-RANGE
Content-Type HTTP_CONTENT-TYPE
Cookie HTTP_COOKIE
Date HTTP_DATE
ETag HTTP_ETAG
Expires HTTP_EXPIRES
From HTTP_FROM
Host HTTP_HOST
If-Match HTTP_IF-MATCH
If-Modified-Since HTTP_IF-MODIFIED-SINCE
If-None-Match HTTP_IF-NONE-MATCH
If-Range HTTP_IF-RANGE
Last-Modified HTTP_LAST-MODIFIED
Link HTTP_LINK
Location HTTP_LOCATION
Max-Forwards HTTP_MAX-FORWARDS
Mime-Version HTTP_MIME-VERSION
Pragma HTTP_PRAGMA
Proxy-Authenticate HTTP_PROXY-AUTHENTICATE
Proxy-Authentication-Info HTTP_PROXY-AUTHENTICATION-INFO
Proxy-Authorization HTTP_PROXY-AUTHORIZATION
Proxy-Connection HTTP_PROXY-CONNECTION
Public HTTP_PUBLIC
Range HTTP_RANGE
Referer HTTP_REFERER
Request-Range HTTP_REQUEST-RANGE
Retry-After HTTP_RETRY-AFTER
Server HTTP_SERVER
Set-Cookie HTTP_SET-COOKIE
Title HTTP_TITLE
Transfer-Encoding HTTP_TRANSFER-ENCODING
Upgrade HTTP_UPGRADE
User-Agent HTTP_USER-AGENT
Vary HTTP_VARY
Via HTTP_VIA
Warning HTTP_WARNING
WWW-Authenticate HTTP_WWW-AUTHENTICATE
Authentication-Info HTTP_AUTHENTICATION-INFO
X-Cache HTTP_X-CACHE
X-Cache-Lookup HTTP_X-CACHE-LOOKUP
X-Forwarded-For HTTP_X-FORWARDED-FOR
X-Request-URI HTTP_X-REQUEST-URI
X-Squid-Error HTTP_X-SQUID-ERROR
Negotiate HTTP_NEGOTIATE
X-Accelerator-Vary HTTP_X-ACCELERATOR-VARY
Other: HTTP_OTHER: