这篇文章主要介绍了PHP实现检测客户端是否使用代理服务器及其匿名级别,需要的朋友可以参考下
要判断客户端是否使用代理服务器,可以从客户端所发送的环境变量信息来判断。
具体来说,就是看HTTP_VIA字段,如果这个字段设置了,说明客户端使用了代理服务器。
匿名级别可以参考下表来判断。
给出一个应用例子,可以挂上代理试试效果:
一、没有使用代理服务器的情况:
REMOTE_ADDR = 您的 IP
HTTP_VIA = 没数值或不显示
HTTP_X_FORWARDED_FOR = 没数值或不显示
二、使用透明代理服务器的情况:Transparent Proxies
REMOTE_ADDR = 代理服务器 IP
HTTP_VIA = 代理服务器 IP (补充:这个字段由代理服务器填充,有时会填充网关信息等)
HTTP_X_FORWARDED_FOR = 您的真实 IP
这类代理服务器还是将您的信息转发给您的访问对象,无法达到隐藏真实身份的目的。
三、使用普通匿名代理服务器的情况:Anonymous Proxies
REMOTE_ADDR = 代理服务器 IP
HTTP_VIA = 代理服务器 IP (补充:这个字段由代理服务器填充,有时会填充网关信息等)
HTTP_X_FORWARDED_FOR = 代理服务器 IP
隐藏了您的真实IP,但是向访问对象透露了您是使用代理服务器访问他们的。
四、使用欺骗性代理服务器的情况:Distorting Proxies
REMOTE_ADDR = 代理服务器 IP
HTTP_VIA = 代理服务器 IP (补充:这个字段由代理服务器填充,有时会填充网关信息等)
HTTP_X_FORWARDED_FOR = 随机的 IP
告诉了访问对象您使用了代理服务器,但编造了一个虚假的随机IP代替您的真实IP欺骗它。
五、使用高匿名代理服务器的情况:High Anonymity Proxies
REMOTE_ADDR = 代理服务器 IP
HTTP_VIA = 没数值或不显示
HTTP_X_FORWARDED_FOR = 没数值或不显示
完全用代理服务器的信息替代了您的所有信息,,就象您就是完全使用那台代理服务器直接访问对象。
除此之外,可以通过proxy judges总 结其他一些可供参考的判定信息,一遍于在实践中加以利用。
最后写一个php例子,仅供大家参考:
复制代码 代码如下:
if(!empty($_SERVER['HTTP_VIA'])) //使用了代理
{
if(!isset($_SERVER['HTTP_X_FORWARDED_FOR']))
{
//Anonymous Proxies 普通匿名代理服务器
//代理IP地址为 $_SERVER['REMOTE_ADDR']
}
else
{
//Transparent Proxies 透明代理服务器
//代理IP地址为 $_SERVER['REMOTE_ADDR']
//真实ip地址为 $_SERVER['HTTP_X_FORWARDED_FOR']
}
}
else //没有代理或者是高匿名代理
{
//真实ip地址为 $_SERVER['REMOTE_ADDR']
}

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment