vps主机的疑问。访问时的头信息怎么是有代理的？!

网址：http://www.qq8877.com/jstest.php
下面是没用代理的。。用了代理也是一样的。只不过HTTP_X_FORWARDED_FOR是代理IP。。
这就郁闷了，我没法判断用户是不是用代理访问我的网站的了Array
(
    [ALL_HTTP] => HTTP_CACHE_CONTROL:max-age=259200
HTTP_CONNECTION:keep-alive
HTTP_VIA:1.1 vps136182 (squid/3.0.STABLE23-BZR)
HTTP_ACCEPT:image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, application/vnd.ms-excel, application/msword, */*
HTTP_ACCEPT_ENCODING:gzip, deflate
HTTP_ACCEPT_LANGUAGE:zh-cn
HTTP_COOKIE:virtualwall=vsid=6a70a3bc4ddb133e12bbbd5bbb5942e3
HTTP_HOST:www.qq8877.com
HTTP_USER_AGENT:Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
HTTP_X_FORWARDED_FOR:114.249.27.227    [HTTPS] => off
    [SCRIPT_NAME] => /jstest.php
    [HTTP_COOKIE] => virtualwall=vsid=6a70a3bc4ddb133e12bbbd5bbb5942e3
    [AUTH_PASSWORD] => 
    [AUTH_TYPE] => 
    [AUTH_USER] => 
    [CONTENT_LENGTH] => 0
    [CONTENT_TYPE] => 
    [PATH_TRANSLATED] => D:\wwwroot\qq8877.com
    [QUERY_STRING] => 
    [REMOTE_ADDR] => 192.168.18.1
    [REMOTE_HOST] => 192.168.18.1
    [REMOTE_USER] => 
    [REQUEST_METHOD] => GET
    [SERVER_NAME] => www.qq8877.com
    [SERVER_PORT] => 80
    [SERVER_PROTOCOL] => HTTP/1.0
    [SERVER_SOFTWARE] => Microsoft-IIS/6.0
    [APPL_MD_PATH] => /LM/W3SVC/465950715/Root
    [APPL_PHYSICAL_PATH] => D:\wwwroot\qq8877.com\
    [INSTANCE_ID] => 465950715
    [INSTANCE_META_PATH] => /LM/W3SVC/465950715
    [LOGON_USER] => 
    [REQUEST_URI] => /jstest.php
    [URL] => /jstest.php
    [SCRIPT_FILENAME] => D:\wwwroot\qq8877.com\jstest.php
    [ORIG_PATH_INFO] => /jstest.php
    [PATH_INFO] => 
    [ORIG_PATH_TRANSLATED] => D:\wwwroot\qq8877.com\jstest.php
    [DOCUMENT_ROOT] => D:\wwwroot\qq8877.com
    [PHP_SELF] => /jstest.php
    [HTTP_CACHE_CONTROL] => max-age=259200
    [HTTP_CONNECTION] => keep-alive
    [HTTP_VIA] => 1.1 vps136182 (squid/3.0.STABLE23-BZR)
    [HTTP_ACCEPT] => image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, application/vnd.ms-excel, application/msword, */*
    [HTTP_ACCEPT_ENCODING] => gzip, deflate
    [HTTP_ACCEPT_LANGUAGE] => zh-cn
    [HTTP_HOST] => www.qq8877.com
    [HTTP_USER_AGENT] => Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
    [HTTP_X_FORWARDED_FOR] => 114.229.27.127
    [REQUEST_TIME] => 1315803108
)