Another setup is ' reverse proxy' or 'webserver acceleration' (using http_port 80 accel vhost). The above setup-caching the contents of an unlimited number of webservers for a limited number of clients-is the classical one. Within UK organisations at least, users should be informed if computers or internet connections are being monitored. People requesting pages through a network which transparently uses Squid may not know whether this information is being logged. Whether these are set, and what they are set to do, is up to the person who controls the computer running Squid. Squid has some features that can help anonymize connections, such as disabling or changing specific header fields in a client's HTTP requests. The latter is typically a corporate set-up (all clients are on the same LAN) and often introduces the privacy concerns mentioned above. browser) either has to specify explicitly the proxy server it wants to use (typical for ISP customers), or it could be using a proxy without any extra configuration: 'transparent caching', in which case all outgoing HTTP requests are intercepted by Squid and all responses are cached. Because the caching servers are controlled by the web service operator, caching proxies do not anonymize the user and should not be confused with anonymizing proxies.Ī client program (e.g. This is often useful for Internet service providers to increase speed to their customers, and LANs that share an Internet connection. Squid is now developed almost exclusively through volunteer efforts.Īfter a Squid proxy server is installed, web browsers can be configured to use it as a proxy HTTP server, allowing Squid to retain copies of the documents returned, which, on repeated requests for the same documents, can reduce access time as well as bandwidth consumption. SquidNT, a port of the Squid proxy server was merged into the main Squid project in September 2006.

Squid version 1.0.0 was released in July 1996. Duane Wessels forked the 'last pre-commercial version of Harvest' and renamed it to Squid to avoid confusion with the commercial fork called Cached 2.0, which became NetCache. Further work on the program was completed at the University of California, San Diego and funded via two grants from the National Science Foundation. Squid was originally developed as the Harvest object cache, part of the Harvest project at the University of Colorado Boulder.

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