高度匿名代理、普通匿名代理和透明

http://blog.163.com/feiqiu_13/blog/static/168700889200811189410955/

从隐藏使用代理用户的级别上划分,代理可以分为三种，即高度匿名代理、普通匿名代理和透明代理.

(1)高度匿名代理不改变客户机的请求.这样在服务器看来就像有个真正的客户浏览器在访问它,这时客户的真实IP是隐藏的,服务器端不会认为我们使用了代理.

(2)普通匿名代理能隐藏客户机的真实IP,但会改变我们的请求信息,服务器端有可能会认为我们使用了代理.不过使用此种代理时,虽然被访问的网站不能知道你的ip地址,但仍然可以知道你在使用代理,当然某些能够侦测ip的网页仍然可以查到你的ip.

(3)透明代理,它不但改变了我们的请求信息,还会传送真实的IP地址.

三者隐藏使用代理者身份的级别依次为高度匿名代理最隐蔽，其次是普通匿名代理，最差的是透明代理.

you may see references to fourdifferent types of proxy servers:

Transparent Proxy - This type of proxy server identifiesitself as a proxy server and also makes the original IP addressavailable through the http headers. These are generally used fortheir ability to cache websites and do not effectively
provide anyanonymity to those who use them. However, the use of a transparentproxy will get you around simple IP bans. They are transparent inthe terms that your IP address is exposed, not transparent in theterms that you do not know that you are using it
(your system isnot specifically configured to use it.)

Anonymous Proxy - This type of proxy server identifiesitself as a proxy server, but does not make the original IP addressavailable. This type of proxy server is detectable, but providesreasonable anonymity for most users.

Distorting Proxy - This type of proxy server identifiesitself as a proxy server, but make an incorrect original IP addressavailable through the http headers.

High Anonymity Proxy - This type of proxy server doesnot identify itself as a proxy server and does not make availablethe original IP address.