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If a web server responds with Cache-Control: no-cache then a web browser or other caching system (intermediate proxies) must not use the response to satisfy subsequent requests without first checking with the originating server (this process is called validation). This header field is part of HTTP version 1.1, and is ignored by some caches and ...
Xmarks did provide an option for the user to avoid the Xmarks server, by using their own WebDAV or FTP server to store their bookmarks, but this option was only available with Firefox. [22] Bookmarks were analysed to provide public services such as "Suggested Tags" and "Smarter Search" (Xmarks enhancements to Google web search).
The HTTP Location header field is returned in responses from an HTTP server under two circumstances: To ask a web browser to load a different web page (URL redirection). In this circumstance, the Location header should be sent with an HTTP status code of 3xx. It is passed as part of the response by a web server when the requested URI has:
Firefox added support for HTTP/3 in November 2019 through a feature flag [7] [16] [17] and started enabling it by default in April 2021 in Firefox 88. [ 7 ] [ 10 ] Experimental support for HTTP/3 was added to Safari Technology Preview on April 8, 2020 [ 18 ] and was included with Safari 14 that ships with iOS 14 and macOS 11 , [ 11 ] [ 19 ] but ...
A query string is a part of a uniform resource locator that assigns values to specified parameters.A query string commonly includes fields added to a base URL by a Web browser or other client application, for example as part of an HTML document, choosing the appearance of a page, or jumping to positions in multimedia content.
Well-known URIs are Uniform Resource Identifiers defined by the IETF in RFC 8615. [1] They are URL path prefixes that start with /.well-known/.This implementation is in response to the common expectation for web-based protocols to require certain services or information be available at URLs consistent across servers, regardless of the way URL paths are organized on a particular host.
The X-Forwarded-For (XFF) HTTP header field is a common method for identifying the originating IP address of a client connecting to a web server through an HTTP proxy or load balancer. The X-Forwarded-For HTTP request header was introduced by the Squid caching proxy server's developers.
The threat involves using a PAC, discovered automatically by the system, to redirect the victim's browser traffic to an attacker-controlled server instead. Another issue with pac-file is that the typical implementation involve clear text http retrieval, which does not include any security features such as code signing or web certificates.