What does your browser say
When you visit web sites, uploading files, your browser sends the so-called HTTP request, informing about what page you need, each such request contains various information necessary for connecting the browser and the website: The type of your operating room System (Windows 98/2000 / XP, etc.) and the type of browser used, these data can be used to detect vulnerabilitiesAdditional information collected by the Java script from you:
This example shows a request for the progs.shtmll file in the anti directory on the server 127.0.0.23.
Environment variables that can be found in the request (the request can be changed by the proxy-server)
"Accept-Language" - Informs the remote computer about the language used by your browser. This information can be used to restrict access to resources or for other purposes.
"Referrer" - allows you to identify your interests , I.e. Where did you come to this resource
"Cookies" - Can contain a huge amount of information, such as e-mail, address, passwords ... All this information is in the headers of HTTP requests.
"Accept-Encoding:" - Informs the remote computer about the encoding that is being accepted by your browser.
"If-Modified-Since:" - Will download the file, if it has been changed since [date / time]
"(Proxy) _connection" - Connection type. "Close" and "Keep-Alive" are the two main types of connection. The first is typical for proxy servers, the second is used by browsers for direct connection. Some proxy servers support "Keep-Alive", it looks like a direct connection to the browser. The presence of the information Proxy_ (Connection), in the request indicates that it is made through a proxy server. But some websites do not establish a connection without this information. In addition, some proxies themselves change the data according to their settings"User-Agent:" - Contains information about your OS and browser type.
"Host:" - The requested host.
"Accept:" - Informs the remote computer about the type of information you are accessing. Each type of data corresponds to the so-called MIME type. This type is described by a set of symbols reflecting the type of data used. Here, for example, the table of types of several most frequently used types of data:
Description of the data | File Extension | MIME type |
Gif pictures | Gif | Image / gif |
Jpeg pictures | Jpeg jpg jpe | Image / jpeg |
VRML files | Wrl vrml | Model / vrml |
HTML document | Html htm | Text / html |
Plain text | Asc txt | Text / plain |
ZIP archive | Zip | Application / zip |
MS Word file | Doc | Application / msword |
MS Excel file | Xls | Application / vnd.ms-excel |
MS Power Point file | Ppt | Application / vnd.ms-powerpoint |
Adobe Acrobat file | Application / pdf | |
Flash document | Swf | Application / x-shockwave-flash |
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