squid可以隐藏的header信息
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:


这是例子

reply_header_access Server deny all
reply_header_access X-Cache deny all
reply_header_access Warning deny all
reply_header_access Expires deny all
reply_header_access Cache-Control deny all
reply_header_access age deny all


也可以
via off
reply_header_access All deny all

两条语句搞定