[ Thanks to Falko
Timme for this link. ]
“The main feature or duty of a proxy server could be a gateway
that receives HTTP requests from clients and forwards the request
to the destination and relays the answer back to the requestor.“Squid is most popular open-source software that brings this to
us. It also has some excellent features for doing something else
such as web access controlling, bandwidth controlling, restriction
policies, and content caching and filtering. Actually people
install SQUID to pursuit 2 goals: first reduce the bandwidth
charges by content caching and second for restricting access to
particular contents.”